Terrestrial Planet Formation in Binary Star Systems

first_imgThe answer, of course, is that it depends on the system. In principle, stable orbits should be possible for planets that are always much closer to one star than the other. But the devil is in the details — if scientists are going to spend valuable telescope time on binary stars, they need to know what they’re looking for. How close can two stars be to each other and still form planets? And even if planets form, can their orbits remain stable over billions of years? A small collaboration of scientists at NASA’s Ames Research Center (Elisa Quintana, Jack Lissauer), University of Michigan (Fred Adams), and the Carnegie Institution of Washington (John Chambers) has taken steps to answer these questions. Modern telescopes can measure the orbital parameters of binary stars quite accurately, so it makes sense to first ask what kinds of star systems will preserve the innermost region of the protoplanetary disk. The simulations of Quintana and her colleagues are fairly straightforward. After choosing the masses and orbital parameters of the two stars, 140 planetesimals (mass = 1% Mearth) and planetary embryos (mass = 10% Mearth) are arranged around one of the stars so that their overall mass distribution resembles that of a protoplanetary disk. “The disk is modeled after the Solar nebula,” Quintana explains, “we’re comparing the planet formation process in these binaries to models of the Solar System.” In other words, they are trying to find out what our Solar system might have looked like if the Sun were a binary star.The simulation calculates the force of gravity between every pair of objects and adjusts their positions accordingly at one-week intervals. When two objects collide, if their speeds are not too high, they stick together into a body of greater mass. Eventually, the system forms a handful of stable, massive planets similar to the inner solar system.”Each simulation takes approximately 3 – 4 weeks.” Quintana tells PhysOrg.com. “This corresponds to 100 – 200 million years of simulated time.” Dr. Quintana goes on the explain that this is actually rather short, because many planetesimals are thrown out of the disk or into the central star as the simulation progresses. “The same disk of 154 bodies around the Sun, without any giant planets or a stellar companion [to eject particles], takes twice as long.” To explore a wide variety of possible binary star systems and obtain statistically significant results, Quintana and her colleagues performed over a hundred of these simulations — that’s several years of computer time! All of their simulations form at least one planet, an encouraging result. It turns out that the most important factor is the companion star’s periastron, or point of closest approach to the star with the disk. A companion that gets as close as the orbit of Saturn (about 10 times farther than the Earth from the Sun) removes very little material from the inner disk, and even speeds up the process of planet formation by nudging the planetesimals into different orbits from time to time. A companion star that gets as close as Jupiter (about 5 times farther than the Earth from the Sun), however, will limit planet formation to the hottest central regions.“Over half of the binaries [in astronomical surveys] are wide enough to allow planet formation in the habitable zone of solar-type stars.” Quintana concludes. That fraction expands the catalogue of interesting stars significantly, but many possibilities remain unexplored.For example, it is entirely possible for compact binary systems to share a protoplanetary disk; the planetesimals would just orbit both stars at once. And there is no reason for just one of the stars to have planets! Another open question in whether icy planetesimals, which normally form beyond 5 AU, can still reach the inner disk to deliver water to the rocky worlds. “It is more difficult,” Quintana admits, “but there are many scenarios for having habitable planets in binary star systems.” Most of the disk is not treated in these simulations, and there could be plenty of room around or between the two stars for comets and even gas giants to form. The water will probably still be available, but it is too soon to estimate how much of it might reach these worlds.Physical simulations of planet formation have the potential to answer these questions and more. By the time Kepler and CoRoT start detecting Earth-like worlds, this line of research should have given us a good idea what to expect.Citation: “Terrestrial Planet Formation Around Individual Stars Within Binary Star Systems” by Elisa Quintana, Fred Adams, Jack Lissauer, and John Chambers, Astrophysical Journal (in press) 2007. Available online at arXiv.orgBy Ben Mathiesen, Copyright 2007 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com.Dr. Ben Mathiesen teaches physics at the American University of Paris. His agency Physical Science Editing helps scientists around the world achieve native English writing standards in their publications. Each circle in these plots represents a single simulated planet. The horizontal axis gives the radius of its orbit in astronomical units (AU; the Earth’s distance from the Sun), and the vertical axis gives the eccentricity of the orbit (zero is a perfect circle). The filled green circles represent our own rocky planets: Mercury, Venus, Earth, and Mars. The grey band indicates the solar system´s habitable zone. The lower plot shows planets from simulations where the point of closest approach between the stars is 10 AU (approximately equal to Saturn’s distance from the Sun). The inner disk has not been compromised; many planets form in and around the habitable zone. In the upper plot the companion star cuts this distance in half, and planet formation in the habitable zone is no longer likely. Scientific interest in the physics of planet formation is at an all-time high. Astronomers and physicists have reached a consensus on the underlying theory, or at least its outlines. A star is born from an immense cloud of gas and dust, which slowly contracts and heats up through the action of gravity. Some of the cloud falls towards the center, where it collects into a hot, dense ball of gas that will eventually become the star. The rest of the cloud orbits the center, contracting and flattening into a protoplanetary disk. Tiny grains of rock and ice stick to each other as they orbit within the disk, eventually growing into ‘planetesimals’ — small lumps of rock and ice similar to asteroids and comets. At this point gravity speeds up the process of planet formation considerably. Rocky planets form close to the newborn star, where the radiant heat prevents ice from forming. Icy planets form in the cold outer regions, but are much larger to begin with and quickly transform into gas giants. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. The list of confirmed extrasolar planets keeps growing, and has now passed two hundred members — almost all of which are gas giants like Jupiter and Saturn. But the hunt is on for Earth-like worlds! With the successful launch of France’s CoRoT satellite (December 27, 2006) and the promise of NASA’s Kepler mission (due to be launched October 2008), the next five years should see the detection of numerous terrestrial planets around distant stars. But which stars should these telescopes be pointed at? Recent research has shown that these planets are probably quite common, and can even form in binary star systems. Explore further Citation: Terrestrial Planet Formation in Binary Star Systems (2007, January 26) retrieved 18 August 2019 from https://phys.org/news/2007-01-terrestrial-planet-formation-binary-star.html Ploonets: Exiled moons may explain astronomical mysteries It is now thought that almost all stars are born with a protoplanetary disk — the question is under what circumstances these disks form useful planets rather than a mass of rubble. The method of choice is numerical simulations, which can follow the evolution of a disk by modeling its gas dynamics (in the early stages of planet formation) or the gravitational interactions between planetesimals (in the later stages). Such research has shown that planets should almost always form, at least around an isolated star like our Sun.Of course, star formation is a more complicated business.Stars rarely, if ever, form in isolation. More often, a giant molecular cloud will create dozens or hundreds of stars in relatively close proximity. Binary star systems, composed of two stars orbiting their mutual center of gravity, are actually just as common as singles. For stars the size of our Sun, about 50% form in binary systems.In the search for other worlds like our own, should we limit ourselves to stars like our own? Must we cut the field in half before we start looking? Might binary stars harbor Earth-like planets as well? last_img read more

iRobot Unveils Morphing Blob Robot w Video

first_img Citation: iRobot Unveils Morphing Blob Robot (w/ Video) (2009, October 15) retrieved 18 August 2019 from https://phys.org/news/2009-10-irobot-unveils-morphing-blob-robot.html (PhysOrg.com) — iRobot’s latest robot is unique on many levels. The doughy blob moves by inflating and deflating – a new technique its developers call “jamming.” As the researchers explain in the video below, the jamming mechanism enables the robot to transition from a liquid-like to a solid-like state. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. As a new kind of chemical robot (or chembot), the blob bot has stretchy silicone skin, which is composed of multiple cellular compartments that each contain a “jammable slurry.” When some of these cells are unjammed, and an actuator in the center of the robot is inflated, the robot inflates in the areas of the unjammed cells. By controlling which cells are unjammed, the researchers can change the shape of the robot and make it roll in a specific direction.The new robot is being funded by DARPA, which gave iRobot $3.3 million to work on the chembot last year. The goal is to build a robot that can squeeze through tiny openings smaller than its own dimensions, which could be valuable in a variety of missions. The video shows the robot from about one year ago, and since then the researchers have been working on adding sensors and connecting multiple blob bots together. • Join PhysOrg.com on Facebook!• Follow PhysOrg.com on Twitter!via: IEEE Spectrum© 2009 PhysOrg.com Two Robot Chefs Make Omeletscenter_img Explore further The blob bot uses a jamming mechanism to change its shape and roll, enabling it to squeeze into small spaces. Credit: iRobot. Earlier this week, researchers from iRobot and the University of Chicago presented the new “blob bot” at the IEEE/RSJ International Conference on Intelligent Robots and Systems. last_img read more

Jumping spiders that love smelly socks could help fight malaria

first_img Mosquitoes supply spider with blood Citation: Jumping spiders that love smelly socks could help fight malaria (2011, February 17) retrieved 18 August 2019 from https://phys.org/news/2011-02-spiders-smelly-socks-malaria.html Explore further The spider (Evarcha culicivora), which is also known as the vampire spider, is a native of East Africa and is known to go into a kind of feeding frenzy when it smells blood, killing up to 20 female blood-filled Anopheles mosquitoes (the type that carry malaria) in a single session, but not necessarily eating them all immediately.Dr Fiona Cross and Professor Robert Jackson of the University of Canterbury in New Zealand thought the jumping spider could be a useful tool in the fight against malaria if people were encouraged to have them living in their homes, and even before carrying out their research suspected the spiders might be attracted to human odors because they are commonly found in tall grass next to human dwellings.Cross and Jackon devised an “olfactometer” to test their suspicions. They placed each spider into a small holding chamber connected to an exit chamber and pumped air into the holding chamber from one of two boxes. One of the boxes contained a clean sock, and the other contained a smelly sock that had been worn for 12 hours. The spider was free to move into the exit chamber at any time, and this chamber had normal, unscented air.The results of the experiment were that the spiders stayed in the holding chamber 15 to 30 minutes longer if their air was laden with the scent of smelly socks than if the air carried the clean sock smell. The behavior was seen in all 109 spiders tested, regardless of their age or gender.Dr Cross said the discovery ties in with some of the spider’s behavior patterns, and it is the first time a spider’s attraction to human odors has been demonstrated. She said since the spider lives in areas where malaria is rife it makes sense to learn as much as possible about it, especially ways in which people can lure the spiders into living in their houses without attracting more mosquitoes at the same time. She said the spider will never be “the magic bullet” that wipes out malaria, but it could be helpful and it is freely available in the environment.In 2003 Professor Jackson discovered the spider and showed that it preys on mosquitoes responsible for malaria, especially females engorged after a blood meal. He also showed the spiders can recognize the mosquitoes both from their appearance and their smell, which was unexpected in a jumping spider known more for its excellent eyesight. Jackson then teamed with Cross and in 2009 they showed the spider becomes irresistible to the opposite sex when they have eaten a meal of blood-filled spiders.The paper is published in the journal Biology Letters. Evarcha culicivora. Credit: Robert Jackson/ University of Canterbury. More information: Olfaction-based anthropophily in a mosquito-specialist predator, by Fiona R. Cross, Biology Letters, Published online before print February 16, 2011, doi:10.1098/rsbl.2010.1233 © 2010 PhysOrg.com (PhysOrg.com) — Researchers in New Zealand have found that a type of jumping spider prefers the odor of smelly socks to clean ones. The spider is the only predator known to feed indirectly on vertebrate blood by eating the mosquitoes that have fed on the vertebrates, including humans. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

New accreting millisecond Xray pulsar discovered

first_imgLight-curve of the outburst of MAXI J0911−655 as observed by Swift-XRT (black points). Green symbols, blue diamond and red hexagon represent the observations collected by XMM-Newton, NuSTAR and INTEGRAL respectively. Credit: Sanna et al., 2016. More information: Discovery of a new accreting millisecond X-ray pulsar in the globular cluster NGC 2808, arXiv:1611.02995 [astro-ph.HE] arxiv.org/abs/1611.02995AbstractWe report on the discovery of coherent pulsations at a period of 2.9 ms from the X-ray transient MAXI J0911-655 in the globular cluster NGC 2808. We observed X-ray pulsations at a frequency of ∼339.97 Hz in three different observations of the source performed with XMM-Newton and NuSTAR during the source outburst. This newly discovered accreting millisecond pulsar is part of an ultra-compact binary system characterised by an orbital period of 44.3 minutes and a projected semi-major axis of ∼17.6 lt-ms. Based on the mass function we estimate a minimum companion mass of 0.024 M⊙, which assumes a neutron star mass of 1.4 M⊙ and a maximum inclination angle of 75∘ (derived from the lack of eclipses and dips in the light-curve of the source). We find that the companion star’s Roche-Lobe could either be filled by a hot (5×106 K) pure helium white dwarf with a 0.028 M⊙ mass (implying i≃58∘) or an old (>5 Gyr) brown dwarf with metallicity abundances between solar/sub-solar and mass ranging in the interval 0.065−0.085 M⊙ (16 < i < 21). During the outburst the broad-band energy spectra are well described by a superposition of a weak black-body component (kT∼ 0.5 keV) and a hard cutoff power-law with photon index Γ∼ 1.7 and cut-off at a temperature kTe∼ 130 keV. Up to the latest Swift-XRT observation performed on 2016 July 19 the source has been observed in outburst for almost 150 days, which makes MAXI J0911-655 the second accreting millisecond X-ray pulsar with outburst duration longer than 100 days. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. X-ray pulsars exhibit strict periodic variations in X-ray intensity, which can be as short as a fraction of a second. AMXP are a peculiar type of X-ray pulsar in which short spin periods are caused by long-lasting mass transfer from a low-mass companion star through an accretion disc onto a slow-rotating neutron star. They are perceived by the scientific community as astrophysical laboratories that could be essential to our understanding of thermonuclear burst processes.MAXI J0911-655 was first spotted on Feb. 19, 2016, by the Monitor of All-sky X-ray Image (MAXI) nova-alert system, mounted on the International Space Station. MAXI searches for transient objects using its real-time Gas Slit Camera (GSC). It found the source at a position compatible with the globular cluster NGC 2808.A few days later, the Burst Alert Telescope (BAT) aboard NASA's Swift space telescope detected X-ray activity from MAXI J0911-655, confirming that it is an X-ray transient source. Follow-up observations of this source during outburst, conducted by a team of European researchers led by Andrea Sanna of the University of Cagliari in Italy, uncovered coherent pulsations from this X-ray transient."Here, we report on the discovery of coherent ms X-ray pulsation from MAXI J0911-655, and we describe the detailed analysis of XMM-Newton and NuSTAR observations from which we derived the orbital solution for the pulsar," the scientists wrote in the paper.Using ESA's XMM-Newton space observatory and NASA's Nuclear Spectroscopic Telescope Array (NuSTAR), the team detected X-ray pulsations at 339.97 Hz during the outburst of the new X-ray source, with an average pulse fraction of 7 percent. This observational campaign was carried out in April and May 2016 and allowed the researchers to calculate that these pulsations have a period of 2.9 milliseconds. The researchers also found that MAXI J0911-655 is part of an ultra-compact binary system with an orbital period of about 44 minutes and a projected semi-major axis of approximately 17.6 lt-ms. They calculated that the neutron star is about 40 percent more massive than the sun and that the companion star has a minimum mass of about 0.024 solar masses.However, the most intriguing thing about the newly discovered pulsar is that it is a rare example of an accreting, rapidly-rotating neutron star harbored in a low-mass X-ray binary system. So far, only 18 such AMXPs have been detected and almost 80 percent of them show persistent X-ray pulsation during the outburst phase. Therefore, any new addition to this list is of high scientific value for astronomers trying to better understand outburst processes.Moreover, MAXI J0911-655 turns out to be the second AMXP with an outburst duration longer than 100 days. The researchers noted that if the outburst started with the first detection of the source, it indicates that the outburst lasted at least 150 days, which is quite long when compared with other AMXPs. (Phys.org)—A new accreting millisecond X-ray pulsar (AMXP) has been found in one of our galaxy's most massive clusters, NGC 2808. The newly detected AMXP received designation MAXI J0911-655 and is part of an ultra-compact binary system. A paper describing the discovery was published Nov. 9 on the arXiv pre-print server. Pulsar discovered in an ultraluminous X-ray source © 2016 Phys.org Citation: New accreting millisecond X-ray pulsar discovered (2016, November 15) retrieved 18 August 2019 from https://phys.org/news/2016-11-accreting-millisecond-x-ray-pulsar.html Explore furtherlast_img read more

Stars as random number generators could test foundations of physics

first_img Physicists demonstrate new way to violate local causality (Phys.org)—Stars, quasars, and other celestial objects generate photons in a random way, and now scientists have taken advantage of this randomness to generate random numbers at rates of more than one million numbers per second. Generating random numbers at very high rates has a variety of applications, such as in cryptography and computer simulations. Explore further © 2017 Phys.org Citation: Stars as random number generators could test foundations of physics (2017, May 16) retrieved 18 August 2019 from https://phys.org/news/2017-05-stars-random-foundations-physics.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. However, Bell tests have several loopholes. Typically, loopholes are ways for the objects being measured to secretly share information in a classical way in order to make it appear that local realism is violated when it is not. Although physicists have recently closed two of these loopholes (the locality loophole and detection loophole), there may always be some loopholes that can conceivably circumvent the restrictions of the test. One such possibility is called the freedom-of-choice (or randomness) loophole. This loophole suggests that the detector settings—which are determined using random number generators—could have somehow been correlated even before the experiment began. Before now, it has been thought that these correlations could have occurred just a fraction of a second before the start of the experiment.By using random number generators based on cosmic sources, the researchers showed that these correlations must have occurred before the photons left the stars, which is at least 3000 or so years before the experiment began—an improvement of more than 16 orders of magnitude. (A couple months ago, a paper was independently published that restricted the correlations to at least 600 years in the past, using similar methods based on cosmic sources of random number generation.)In addition, a third independent group of researchers has recently suggested that the time constraint for the freedom-of-choice loophole could be pushed back by billions of years by using very distant quasars as random number generators. To further pursue this possibility, the researchers in the new study suggest that a satellite-based cosmic Bell experiment may achieve better results than Earth-based experiments because, for one thing, it would avoid atmospheric disturbances. They hope to further pursue such improvements in the future. But the researchers in the new study are also interested in using these cosmic random number generators for another purpose: to test the foundations of physics by progressively addressing another loophole in the Bell tests. While Bell tests show that quantum particles are correlated in ways that cannot be explained by classical physics, the results may not be reliable if parts of these tests manage to take advantage of any kind of loophole. The researchers, led by Jian-Wei Pan, at the University of Science and Technology of China in Shanghai, have published a paper on using cosmic sources to generate random numbers in a recent issue of Physical Review Letters.”We presented an experimental realization of cosmic random number generators (RNGs) and a realistic design of an event-ready Bell test experiment with these RNGs to address the freedom-of-choice loophole while closing the locality and efficiency loopholes simultaneously,” coauthor Jingyun Fan told Phys.org. “It will be of high interest to implement the proposed experiment in the near future.”In their work, the researchers used an optical telescope located at the Astronomy Observatory in Xinglong, China, to collect light from a variety of very bright and distant cosmic radiation sources. Some of these objects are more than a trillion times brighter than our Sun and located hundreds of millions of light-years away.Since the time interval between photon emission events is random, the photons are detected by the telescope at random time intervals. The device has a time resolution of 25 picoseconds (a picosecond is one trillionth of a second). On average, a photon is detected about once every 100 nanoseconds, corresponding to more than a million photons detected per second. This rate is competitive with today’s current best random number generators, which use lasers as the photon source. In the second part of their study, the physicists proposed that this cosmic random number generator could be used to improve Bell tests. These tests aim to show that, unlike our observations of the classical world, the quantum world does not obey local realism—a concept that refers to a combination of locality (that objects cannot influence each other across large distances) and realism (that objects exist even before any measurement is made). Violating a Bell inequality shows that, at the quantum level, nature violates either locality or realism, or both. More information: Cheng Wu et al. “Random Number Generation with Cosmic Photons.” Physical Review Letters. DOI: 10.1103/PhysRevLett.118.140402 Journal information: Physical Review Letters The proposed Bell test uses stars and quasars as random number generators to address the freedom-of-choice loophole and show that the quantum world does not obey local realism. Credit: Wu et al. ©2017 American Physical Societylast_img read more

What to Do When the Boss Is Wrong

first_img— In better-run offices, employees defy their superiors overtly. Back in the early 1980s, when Joanna Hoffman was in charge of marketing for Apple’s nascent Macintosh computer system, her boss, Steve Jobs, was a demanding, tantrum-throwing perfectionist. According to his biographer, Walter Isaacson, every year from 1981 on, the team developing the Mac gave an award to the person who could best stand up to Jobs. The first winner was Hoffman. Mercurial bosses in dysfunctional offices sometimes give orders that their employees just ignore—even when that dysfunctional office is the highest in the country. According to Robert Mueller’s recent report, Donald Trump tried to get his staff to impede the special counsel’s investigation, but figures such as Don McGahn and Rod Rosenstein protected the president—and themselves—by quietly letting those orders slide. Workplaces function better, business ethicists point out, when they make room for a certain amount of defiance. “I think you always have to make independent judgments about orders that come down to you,” Charlan Nemeth, a psychology professor at the University of California at Berkeley, said in an email. Nemeth, the author of the 2018 book In Defense of Troublemakers, added, “People who speak up are often those most loyal to the organization.” Read the whole story: The Atlantic At one point, Isaacson wrote, she found out that Jobs had adjusted her marketing projections “in a way she found totally reality-distorting.” As she marched toward his office, she told his assistant, “I’m going to take a knife and stab it into his heart.” The company’s counsel overheard her and rushed out to stop her. “But,” she told Isaacson, “Steve heard me out and backed down.” The next year, she won the award again.last_img read more

Ten years of being Khoj

first_imgKhoj, a Delhi-based multi-disciplinary cultural NGO, is celebrating 10 years in Khirkee Extension, and doing it in style. No, there is no fancy cocktail opening here; it’s the residents of Khirkee who will get a chance to double up as artists, musicians, actors and cooks in the three-day festival titled Khoj Dus Tak that will kickstart on 23 November. With as many as 21 projects and six events created as a collaborative effort between Khirkee residents and over 25 artists, the event will also witness the launch of the new Khoj building. Also Read – ‘Playing Jojo was emotionally exhausting’Says Pooja Sood, Director, Khoj: ‘Khoj engagement with Khirkee in the last decade — the location, its (often changing) inhabitants and its surrounding areas — have given various artists the opportunity to facilitate creative workshops, events, research projects and other participatory activities with different sections of the community. Such community programmes have always been led by the Khirkee Extension community to produce collective visions and ideas about creative and urban development. It is to celebrate this continuous process of community engagement that we have organised Khoj Dus Tak.’ Also Read – Leslie doing new comedy special with NetflixThe exhibition will be displayed in the newly renovated building and will present a history of Khirkee, with old maps and audio narratives from older generations currently residing in Khirkee. It will also revisit some of Khoj’s old and new community projects. For instance, Window into Khirkee, will conjure a history of Khirkee through old maps, audio recordings of conversations with one of the oldest residents of Khirkee, who is fondly called Masterji. Posters and 3D models from architect and urban planner Sudeshna Chatterjee’s project of May 2011 titled Play @ Khirkee will also be a part. The project explored the landscapes of play in Khirkee and its surrounding areas. Taking a socio-spatial perspective and using ethnographic field work, it explored how play is perceived by the community, how spaces for play are conceived and how children play in urban spaces.Apart from the above exhibition, the festival will also witness some unique new projects. A Photo Studio will be created in one of the rooms for three days and the residents will be invited to get their photographs taken. Khirkee will also change its façade with the Shop Makeovers project where eight artists — Upasana Mehdiratta, Gaurvi Sharma, Vinima Gulati, Ram Bali Chauhan, Tulsi Ram, Amitabh Kumar, Sanjib Roy — will work in collaboration with five shopkeepers to exchange ideas and develop a collective method of art-making.Then there is Khirkee Raag, where Tarik, a band based in Delhi and Shillong collaborates with three musicians from Khirkee to create an original song about Khirkee. Khirkee Se which brings together three sound projects that will be played in public spaces like barber shops and tea stalls, Khirkee ka Khana & Recipe books project, on each day of the festival, where Khoj will invite five women of Khirkee to cook special food items of their own creation.last_img read more

Comedy and the couch

first_imgGet ready for a laughter ride as the Capital is going to some great events this weekend. A English comedy play,  California Suite directed by Vishesh Arora will be tickling you. The comedy is composed of three playlets set in Suite 203-04, which consists of a living room and an adjoining bedroom with an ensuite bath, in The Beverly Hills Hotel. Conservative middle-aged businessman Marvin Michaels is the visitor from Philadelphia, who awakens to discover a prostitute named Bunny unconscious in his bed after consuming a bottle of vodka. With his wife Millie on her way up to the suite, he must find a way to conceal all traces of his uncharacteristic indiscretion. Also Read – ‘Playing Jojo was emotionally exhausting’The visitors from London are British actress Diana Nichols, a first-time nominee for the Academy Award for best actress, and her husband Sidney, a once-closeted antique dealer who increasingly has become indiscreet about his sexual orientation. The Oscar is an honor that could jumpstart her faltering career, although Diana knows she doesn’t have a chance of winning. She is in deep denial about the true nature of her marriage of convenience, and as she prepares for her moment in the spotlight, her mood fluctuates from hope to panic to despair. Also Read – Leslie doing new comedy special with NetflixThe visitors from Chicago are two affluent couples who are best friends. Stu Franklyn and his wife Gert and Mort Hollender and his wife Beth are taking a much-needed vacation together. Things begin to unravel quickly when Beth is hurt during a mixed doubles tennis match and Mort accuses Stu of having caused her injury by lobbing the ball.The second event is The Quicky Jar – a standup comedy based on collective that produces a Monday Morning Quickie podcast and live stand-up shows. The show features comedians-Vikramjit Singh, Abhishek Upmanyu, Madhvendra Singh,Denny George,Rohan Desai. So plan your weekend evening and book your ticket soon.Where: Akshara Theatre, Connaught PalceWhen: 28 JuneTiming: 5.30 pm, 7 pm, 8.30 pmlast_img read more

IPL2018 Williamsons 50 guides Hyderabad to victory over KKR

first_imgKolkata: Skipper Kane Williamson led from the front with a classy 44-ball 50 as Sunrisers Hyderabad (SRH) coasted to a five-wicket victory against Kolkata Knight Riders (KKR) in a rain-hit Indian Premier League (IPL) game at the Eden Gardens here on Saturday. Chasing a modest 139 to win, New Zealand captain Williamson mixed caution with aggression (4×4, 16) as Bangladesh all-rounder Shakib Al Hasan gave him good support with a 21-ball 27.Yusuf Pathan (17 not out) hit the winning runs with a six over square leg off Andre Russell as the visitors reached the target with six balls to spare. Also Read – Heavy rain hits traffic, flightsThis was SRH’s first triumph at the Eden in five attempts and their third straight victory this season.Local boy Wriddhiman Saha (24; 15b 5×4 0x6) gave SRH a flying start before Sunil Narine (2/17) got his back in his very first delivery with a fullish delivery down the leg side which took a feather edge off the India Test stumper’s bat to Dinesh Karthik who took a sharp catch.Narine also castled Shikhar Dhawan (7; 7b 1×4 0x6) with an overpitched ball which the India southpaw tried to defend and the ball sneaked under his bat. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedAt the end of Powerplay, SRH were 46/2 still needing 93 runs for victory.Chinaman Kuldeep Yadav (1/23) accounted for former KKR batsman Manish Pandey, who was brilliant in the field taking two superb catches, with a fullish delivery that the 28-year old could not pick.Then Williamson and Shakib stitched together a 59-run stand for the fourth wicket before the latter was caught in two minds whether to defend and hit, losing his leg stump in the process to Piyush Chawla (1/20). But there was no stopping Williamson who brought up his fifty.Williamson’s stay was cut short by Mitchell Johnson whose fullish delivery on the leg stump was flicked on to square leg where Andre Russell took an easy catch. Earlier, India pace spearhead Bhuvneshwar Kumar delivered crucial blows as SRH made the most of a hour-long rain break and some excellent catching by Manish Pandey to restrict KKR to a modest 138/8.Kumar (3/26) — back after recovering from a sore back — was ably supported by pacer Billy Stanlake (2/21) and Bangladesh all-rounder Shakib Al Hasan (2/21).Pandey took two outstanding catches to send Nitish Rana (18; 16b 2×4 1×6) and Andre Russell (9; 5b 0x4 1×6) — back in the hut as SRH bowlers took control after a rain-induced halt when KKR were going steady at 52/1.For the hosts, opener Chris Lynn (49; 34b 7×4 1×6) was the top-scorer as skipper Dinesh Karthik laboured to a 27-ball 29 hitting two fours and a six.Brief scores: Kolkata Knight Riders 138/8 in 20 overs (Chris Lynn 49; Bhuvneshwar Kumar 3/26, Shakib Al Hasan 2/21, Billy Stanlake 2/21) lose to Sunrisers Hyderabad 139/5 (Kane Williamson 50; Sunil Narine 2/17)last_img read more

KMC to start Aadhaar enrolment camps in borough offices from May

first_imgKolkata: The Kolkata Municipal Corporation (KMC) will start holding camps for Aadhaar enrolment at its borough offices in the city, from the beginning of May. The decision of the civic body comes in the wake of demand for citizens to introduce such facilities for smooth enrolment and correction of erroneous names, addresses or other details in the Aadhaar cards.”We have been flooded with requests from citizens, who have claimed that they had paid visits to the designated post offices where such enrolment centres have been set up and many of them had to wait for a long time in queue. Many people have visited our borough offices in recent times, urging us to make arrangements. Following this, we had written to the state government, seeking permission for such arrangements. We have recently got the nod,” a senior official of KMC said. Also Read – Heavy rain hits traffic, flightsRecently, Municipal Commissioner Khalil Ahmed conducted a meeting with top officials of KMC in this regard.It may be mentioned that the Unique Identification Authority of India (UIDAI) had issued a circular a few months ago, amidst allegations of data leakage barring a number of agencies from being involved in the Aadhaar enrolment process. There were more than twenty private agencies working under KMC for Aadhaar enrolment. However, after the circular, the civic body was compelled to stop such enrolment process. As per data available with KMC, 80 percent of the population in KMC area have got their Aadhaar cards and 20 percent are yet to receive the same. Added to this, the people gather in the enrolment centres for correction in their cards, which includes mistakes in names, addresses etc. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedAccording to a senior KMC official, from January till March, only two private agencies were involved in Aadhaar enrolment, but these two agencies have also been deactivated after March 31. It has been learnt that KMC has already roped in a handful of valid agencies under UIDAI for conducting the exercise. “This will be of much help for aged or sick people, who cannot travel long distances for enrolment,” a senior KMC official said.last_img read more

Five arrested over St Pauls College ragging case

first_imgKolkata: Kolkata police have arrested all the five accused who were named in the FIR in connection with the St Paul’s College case.They have been identified as Arnab Ghosh, Abdul Qayum Mollah, Sk Inamul Haque, Avijit Doloi andAnanta Pramanik.The FIR registered with the Amherst Street police had named St Paul’s students Arnab Ghosh and Avijit Doloi, clerk Ananta Pramanik, and TMC leadersAbdul Qayum Mollah and Sheikh Inamul Haq for ragging and making a nude video of a junior student in college premises. Also Read – Heavy rain hits traffic, flightsIt may be mentioned here that state Education minister Partha Chattarejee instructed the college authorities to take prompt action against those responsible behind the incident.Chatterjee had sent out a strong message that none of the culprits would be spared in this ragging case.The incident not only embarrassed the institution but also made the students scared. The college authorities, however, took a stringent action against the students and rusticated them. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedThe incident took place on May 17 when the junior student was stripped naked and beaten on camera for allegedly asking about the expenditure of a certainfundraising event.The video went viral, triggering furore across the state. The college authority lodged a complaint with the police and set up an internal inquiry board to probe the matter.Following a probe, the college authorities rusticated students Arnab Ghosh and Avijit Doloi, and sacked Ananta Pramanik earlier this week.The college authorities have now mandated ID cards after it was found that among the accused two were not even college students.last_img read more

Teenagers find social media likes as rewarding as chocolates

first_imgFor the study, the researchers from the University of California – Los Angeles observed activation in the brain’s reward regions when teenagers saw their photos with a large number of likes. 32 teenagers, aged 13-18, were told they were participating in a small social network similar to the popular photo-sharing app, Instagram. In an experiment, the researchers showed them 148 photographs on a computer screen for 12 minutes, including 40 photos that each teenager submitted, and analysed their brain activity using functional magnetic resonance imaging, or fMRI.  Also Read – ‘Playing Jojo was emotionally exhausting’Each photo also displayed the number of likes it had supposedly received from other teenage participants – in reality, the number of likes was assigned by the researchers. “When the teenagers saw their own photos with a large number of likes, we saw activity across a wide variety of regions in the brain,” said lead author Lauren Sherman. A region that was especially active, is a part of the striatum called the nucleus accumbens, which is part of the brain’s reward circuitry, she said. This reward circuitry is thought to be particularly sensitive during adolescence.  The study was published in the journal Psychological Science.last_img read more

Smartly style up your v

first_imgBoyfriend jeans is one fashion trend that effortlessly blur the lines between classy and funky. A far cry from conventional skinny jeans, these jeans are versatile and can look ultra glamorous with almost everything – from a cool tee, to a shirt, to even a sharp blazer! So, join the fashion bandwagon now. Experts list some ways to team it right.Basically cool: Is there anything a plain white-tee cannot fix? When in a dilemma over how to style your boyfriend jeans, it can’t get simpler than the white tee! A white t-shirt and boyfriend jeans are now considered a classic, and the powerful duo promise no room for failure! Just reach for these two when you’re running late in the morning. Class up the act further in a pair of comfy pumps. Also Read – Add new books to your shelfEarn your stripes: The denim and stripe combination always works. For a striped ensemble that’s aesthetically pleasing, a rugged pair of boyfriend jeans for women does the trick. Whether it’s a t-shirt or a shirt, those nautical stripes always manage to rub off its classy streak, and your BF jeans are no exception! Heading to a brunch or just another casual Friday? Put on some red lipstick for an instant pop of colour and wield out those tan accessories for a finishing touch. Also Read – Over 2 hours screen time daily will make your kids impulsiveMatch perfect with double denim: The double denim trend is here to stay! And, with boyfriend jeans for women, the cool quotient only goes up several notches. There are opportunities galore when it comes to experimenting with this look. A bold black tee, a baseball cap, white sneakers, or bold red lipstick, rope in a statement element to match up to your statement look!The good crop: Boyfriend jeans for women can look beautifully feminine and chic too. Trust the dainty crop top to work wonders. Give it a cheerful vibe with colourful oxfords or leave it up to a pair of stilettos and a clutch for that extra touch of refinement. It gets better with a blazer: Blazers; the epitome of formal dressing and elegance. But how well will the poised blazer go with the carefree, baggy boyfriend jeans for girls? Turns out the combination is a hit! Try it out at office and get a nod of approval for your out-of-the-box fashion sense!Sport a borrowed-from-the-boys ease with a boxy tee and slip-on shoes, a forever favoriteAdd a feminine twist to your oversized boyfriend jeans by pairing it with a button down ruffle sleeve top and stilettosRoll up your boyfriend jeans at the cuffs and pair with ankle boots for an edgy lookGet a super casual look by pairing with a striped crop top and sneakers.last_img read more

White Look effortlessly beautiful

first_imgFashion is an individual’s perception of style, comfort, and colours. And, as idea of fashion changes, a difference is observed in the style, designs, and colours that a person prefers to wear. Earlier it was all black, but since last year – white is dominating the wardrobe of fashionistas. White—technically the absence of color – is nearly as low-maintenance as black, with the advantage of being particularly striking in the summerSo, is white the new black? Also Read – Add new books to your shelfLet us know what experts from the fashion industry have to say: Following the idea of minimalism, Sandhya Raman, Co-founder of Desmania says that her label ‘No fuss’ is all about simple classic lines on white colour, celebrating the textures and weaves in cotton, hemp linen, silk, jute, and wool. “I feel white brings out the best in the silhouette, and one can play with the versatility of the colour to create different fashion. Whether for a formal occasion, a board meeting, a lunch date, the colour would never fail to portray one’s character.” Also Read – Over 2 hours screen time daily will make your kids impulsive”But keeping in mind the simplicity of the colour, one can definitely accessorise it to suit the occasion,” she further added. Moreover, Sandhya believes that white is one of those colours which appears peaceful to eyes and cooler to mind. Various costume designers around the globe also consider ‘white’ as the perfect colour for stage arts. According to them, white is very responsive in nature and with it, one has the liberty to create different looks. Most of the designers are attracted by the romance, mystery, sophistication, and elegance of the colour. Expressing his love for the ‘colour’, Rahul Krishan Ahuja Founder, Design Catalyst – Three Piece Company states: “White is a blank canvas and can make anything seem clean and clear. Also, the colour can be used as perfect backdrop for a designer to create the best out of their outfit.” Look for this season While white goes with anything, nothing looks better than when it’s paired with purple. It just oozes femininity and sensuality. You can accessorise it with some gold and silver accessories and convert a daytime high tea look to a night out.last_img read more

What makes old people feel younger

first_imgOlder adults feel younger when they feel that they have more control over their daily lives, regardless of stress or health concerns, suggests new research. However, stress and health – not a sense of control – play a significant role in how old younger adults feel, said the study published in the Journal of Gerontology: Psychological Sciences. “The more control older adults think they have, the younger they feel,” said study co-author Shevaun Neupert, Professor at North Carolina State University in the US. Also Read – Add new books to your shelfFor this study, the researchers had 116 older adults (ages 60-90) and 107 younger adults (ages 18-36) fill out a daily survey for eight consecutive days. Study participants were asked questions aimed at assessing their daily stresses, physical health, sense of control over their daily lives, and how old they felt. “Everyone’s sense of control fluctuates from day to day, or even over the course of a day – that’s normal,” Neupert said. Also Read – Over 2 hours screen time daily will make your kids impulsive”We found that when older adults felt more in control, they also felt younger. That was true even when accounting for stress and physical health.” However, an individual’s sense of control had no bearing on self-perceptions of age for young adults. But stress and adverse changes in health did make young people feel older. “This highlights the importance of having older adults retain some sense of autonomy,” Neupert said. “It’s not just a nice thing to do, it actually affects their well-being.”last_img read more

Twitter users younger better educated than general public

first_imgTwitter users in the United States are younger, better educated and more left-leaning than the general population, a survey showed recently. The Pew Research Center study found those using the micro-blogging platform are more likely to come from higher-income brackets but that their gender and racial or ethnic makeup is largely similar to the adult population as a whole. The Pew analysis indicates that the 22 per cent of American adults use Twitter – far less than the 69 per cent using the leading social network Facebook. Also Read – Add new books to your shelfTwitter users are younger, more likely to identify as Democrats, more highly educated and have higher incomes than US adults overall, Pew researchers found. The median age of adult US Twitter users is 40 – seven years younger than the overall population. The survey found 42 per cent of adult Twitter users have at least a bachelor’s degree, compared with 31 per cent for the general public. And 41 per cent had a household income above USD 75,000 – nine points greater than the general population. Also Read – Over 2 hours screen time daily will make your kids impulsiveThe researchers found 36 per cent of those surveyed identify with the Democratic Party, compared with 30 per cent of all US adults, while 21 per cent said they identified with Republicans, in contrast with 26 per cent of the US population. Only 14 per cent of Twitter users characterised their political views as “very conservative” compared with 25 per cent of the overall population. Similar shares of Twitter users and US adults identify as “very liberal.” The survey found 90 per cent of Twitter users rarely tweet, while the active 10 per cent are responsible for 80 per cent of all tweets created by US users. The median Twitter user posts two tweets a month, follows 89 accounts and has 25 followers. The “active” tweeters are much more likely to be women – who make up 65 per cent of this group – and more likely to say they regularly tweet about politics, according to the researchers. The survey comes amid intense pressure from President Donald Trump and his Republican allies who claim that Twitter and other social platforms are biased against conservatives – a claim roundly rejected by the companies. Pew surveyed 2,791 US adults in November and December 2018 who were willing to share their Twitter handles – enabling the researchers to analyse the content from their accounts. The margin of error for the study was estimated at three percentage points.last_img read more

Of press freedom and confident women

first_imgEducate yourselves on two buzzwords key to those who present news to you: censorship and freedom of expression; Trace the rise of television journalism and what it is now, in the words of a veteran journalist; And finally, learn why women must, and can, overcome people-pleasing. Here is a list of books, which you can add in your bookshelf: ‘War over Words: Censorship in India, 1930-1960’ by Devika Sethi Debates over freedom of expression make a significant chunk of the civic thought in a democracy like India. Censorship, too, has been an universal phenomenon throughout history. This book is about the history of censorship of publications in India over three crucial decades – encompassing the Gandhian anti-colonial movement, the Second World War, Partition, and the early years of Independent India. Also Read – Add new books to your shelf”In India, the contest over ideas and identities did not end in 1947; neither did the use of print as a means of disseminating views of various hues. Censorship, did not cease in 1947, and this book explores censorship of the printed word in India in the 15 years before and after independence from British rule,” the author wrote in the introduction. ‘The Indian Newsroom’ by Sandeep Bhushan The book, written by veteran journalist Sandeep Bhushan, asks pertinent questions of television journalism in its introduction, and tries to answer them in its pages: What caused the death of field-based reportage, and the marginalisation of reporters? What is access journalism, and what’s wrong with it? How did India evolve the star system? Also Read – Over 2 hours screen time daily will make your kids impulsiveIt goes on to ask: Is the reporter-editor relationship necessarily adversarial? How does the owner-editor system, perhaps unique to India, work in practice? And importantly, how does India compare to more mature industries, like those in the USA or UK? Expressing his thoughts over the changing face of TV journalism, the debut author has written in detail about studios, stars and the unmaking of reporters. ‘Girl, Stop Apologizing: A Shame-Free Plan for Embracing and Achieving Your Goals’ by Rachel Hollis “…Like many other women, I’m still in the process of overcoming a lifetime of people-pleasing,” that’s how the founder of a lifestyle website, Rachel Hollis, introduces her new book ‘Girl, Stop Apologizing’. Hollis says that she has seen it too often: women not living to their full potential. The book, tailor-made for women who undersell themselves, identifies the excuses to let go of, the behaviours to adopt, and the skills to acquire on the path to growth, confidence and believing in yourself.last_img read more

MeT office predicts heavy showers from Sunday in South Bengal districts

first_imgKolkata: The Regional Meteorological Centre in Alipore predicted heavy rainfall in South Bengal districts including the city in the next 48 hours.The weather office has issued an alert to the fishermen in the coastal districts urging them not to venture into the sea in the next two days. Those who have already gone out have been asked to return to the shore by Sunday morning. The weather office prediction says that a low-pressure trough will be formed over the Bay of Bengal bringing in heavy showers in various South Bengal districts. It would start raining in the coastal districts from Sunday evening. The situation may further intensify depending on the strength of the low-pressure trough. The sea will also remain turbulent which is why fishermen have been alerted. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataAccording to a weather official, the Monsoon axis may also remain active in South Bengal districts till August 7 which will bring more rain. It will compensate for the deficit in rainfall in the state so far to some extent. It is presumed that in the current month, the state will receive more rainfall than what it had witnessed in the past two consecutive months. Various South Bengal districts, including Kolkata, saw scattered rainfall in the past couple of days. It has brought some amount of relief for South Bengal from the sweltering heat and the high humidity. The city’s sky partially remained cloudy on Saturday. Districts like North 24-Parganas, Nadia, Howrah, Hooghly, South 24-Parganas received light to moderate rainfall on Saturday. Also Read – Lightning kills 8, injures 16 in state”The rainfall may intensify from Sunday evening due to the impact of a low pressure and active Monsoon axis. Various South Bengal districts may receive heavy rainfall in the next 48 hours. It will also help to check the deficit rainfall in the state so far,” a weather official said. Incidentally, it may be mentioned that tidal waves flooded the seashore and wreaked havoc in the coastal areas of Sankarpur, Tajpur and Mandarmani on Saturday morning. The seawater submerged many farmlands in Tajpur. Villagers in the area panicked after seawater flooded the adjoining areas. Some of the locals alleged that work for constructing the embankments was not properly done in Tajpur area as a result of which the flooding happened because of the high tide, affecting the locals and agricultural lands.last_img read more

VIDEO Jahlil Okafor may have played the worst 10 seconds of defense

first_img Advertisement Jahlil Okafor is still with the Sixers, despite widespread rumors that he he would be traded by the deadline. With budding superstar Joel Embiid shelved for the rest of the year, Okafor is finally getting some run. To say he needs to turn up the intensity on the defensive end is an understatement.For an embarrassing 10 second stretch In last night’s game against the Heat, Okafor played possibly the worst defensive possession in modern NBA history. It was undeniably pathetic.Okafor gets out hustled, doesn’t even try to contest two shots and gets beat to a rebound. It’s an all-around piss poor effort you have to see to believe.Whatever it is you do in life, just be sure to try harder than Jahlil Okafor does on defense. pic.twitter.com/MY5KDHOGmm— Basketball Society (@BBallSociety_) March 2, 2017last_img read more

Deshaun Watson has proven hes the 1 quarterback in the NFL Draft

first_imgColin has been consistent in saying that he thinks Clemson’s Deshaun Watson is the best quarterback in this year’s NFL Draft class, and he just can’t understand the lengths to which some critics in the draft process will go to point out his weaknesses. He was clearly the best quarterback at the combine, but some scouts and front office people still aren’t ready to commit. What more do you want to see?It baffles him how a quarterback like DeShone Kizer, who had a 12-11 record as a starter at Notre Dame, a completion percentage below 60%, and was awful late in games, is touted in the pre-draft process for his measurables and “high ceiling.” In his game film from this year, his measurables and upside looked terrible.I’m watching this draft and everyone keeps telling me Deshaun Watson has a “low ceiling.”Hey, a “low ceiling” is a luxury item for all the teams that can get Deshaun Watson. Here’s what you get. Maturity. Stability. Success. Workaholic. Production.Don’t worry about the ceiling, get guys who are reliable.”Snapchat just went public and made 300 twenty-somethings into instant millionaires. Colin observed that when tech companies make their employees rich they don’t just buy another house and a boat like Wall street brokers who get a fat bonus. Millenials often better their econnomies by starting new companies that instead of taking the money and socking it away.Colin compared LeBron James to the Snapchat because wherever he goes he doesn’t just collect a massive paycheck, he literally betters the economy wherever he plays. He’s packing the bars in the Flats in downtown Cleveland for crying out loud. Most max players just draw paychecks and go to the bank, LeBron grows economies. No other athlete comes close to doing that.“LeBron is the human Snapchat. He creates economies that didn’t exist.”Guests:Joel Klatt – FS1 College Football Commentator discusses the combine; what he makes of Washington receiver John Ross’ record 40 time; if the Browns should draft Myles Garrett at #1; why Deshaun Watson is getting picked apart while DeShone Kizer is being talked up; and why Christian McCaffrey is his top back in the Draft.Chris Broussard – FS1 NBA is in-studio to talk on the NBA MVP race; why Westbrook shoud win MVp if he averages a triple double; if the Warriors can drop to the #2 seed without Durant; and why he doesn’t think the Warriors are done without Durant; and why people need to stop talking about Andrew Bogut like he’s Patrick Ewing.Bruce Feldman  – Fox Sports College Football Writer is in-studio to discuss NFL Combine takeaways; why he thinks Myles Garrett is the clear #1 pick in the NFL Draft; the varying opinions on the quarterback class; how Deshaun Watson separated himself with his combine workout; why he thinks the NFL did Joe Mixon a favor by not inviting him to the combine; and why Penn State is a legit title contender next year.last_img read more