Nearest supernova in 27 years explodes in M82 galaxy

first_img 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. Key link found in Cosmic Distance Ladder Explore further Citation: Nearest supernova in 27 years explodes in M82 galaxy (2014, January 23) retrieved 18 August 2019 from https://phys.org/news/2014-01-nearest-supernova-years-m82-galaxy.html (Phys.org) —A supernova has been spotted in the constellation Ursa Major (between the Big and Little Dipper in the night sky) in the M82 galaxy (affectionately known as the cigar galaxy) by a team of students at University College London. The discovery was posted on the Central Bureau’s Transient Object Confirmation Page which led to follow-up observations by other teams around the world. It’s real, and not only is it bright enough for amateur astronomer’s to view, but it’s the closet known supernova explosion since 1987. Initial study has revealed the supernova to be classified as 1a, the type described by astronomers as “standard candles” because their brightness is uniform enough to allow for using them to measure distances across the universe. Sometimes they start out as a white dwarf, pulling in material from around them until they reach a critical mass and explode. Other times they are the result of two such stars (binaries) colliding.What’s perhaps most exciting about this newest observation is that it’s so close (just 11.4 million light years from us) that it’s likely that images of the star that exploded have been previously recorded by different telescopes around the globe which means scientists might be able to watch the process that led to the supernova occurring, something that has never been seen before. If that turns out to be the case, other space researchers note, the stage could be set for allowing for reducing uncertainties in measuring dark energy—standard candle observations are the means by which such theories first came to exist after all. Also, while the explosion has undoubtedly unleashed a torrent of neutrinos, its unlikely monitors here on Earth will notice much of an uptic in activity due to distance and them getting lost in other sources.Because of the timing of the discovery, it appears that there is more to come—it’s going to get brighter over the next few days before growing dimmer and dimmer, eventually fading to black. That means that anyone wishing to observe a supernova as its happening can do so—likely a once in a lifetime opportunity. Binoculars should be enough, though a telescope would be much better. Universe Today has published a map to help those looking find it. © 2014 Phys.org More information: www.astronomerstelegram.org/?read=5786remanzacco.blogspot.nl/2014/01 … upernova-in-m82.html Credit: UCL/University of London Observatory/Steve Fossey/Ben Cooke/Guy Pollack/Matthew Wilde/Thomas Wrightlast_img read more


Lightning kills 9 across Bengal

first_imgKolkata: Nine persons were killed and others injured in lightning strikes and thunderstorm across the state.Three persons were killed and some others injured after they were struck by lightning in separate incidents in Murshidabad, while one person died in the same district after a wall fell on him during a thunderstorm on Wednesday morning.Three more were killed in Nadia. Two were killed in North 24-Parganas, while one was killed in North Dinajpore. Also Read – Heavy rain hits traffic, flightsA thunderstorm, coupled with rain, lashed the district on Wednesday morning. According to an administrative official from the district, there was heavy shower in various parts of Murshidabad for more than three hours, when the accidents took place. The regional meteorological centre at Alipore has predicted thunderstorm in the city and its adjoining districts on late Wednesday night.According to the police, two among the deceased were from Indrani village under Kandi sub-division, while the other was a resident of Bharatpur. Whereas in the third incident, a 35-year-old man, supposedly a manager of a brick kiln, died when a wall of the brick kiln fell on him at Sagardighi area of the same district. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedOliul Seikh (45) and Basidur Seikh (15), both residents of Indrani village, were returning home after ploughing a field when lightning struck them. The victims died at the spot. After being informed, police recovered their bodies and sent them to Kandi Sub-Divisional Hospital for an autopsy. In the other incident, a class V student, Sajib Seikh, was playing in the rain with some of his companions at Bharatpur when lightning struck them. Two of his associates Roni Seikh (19) and Sohail Seikh (16) received critical injuries in the incident. They are undergoing treatment at Kandi Sub-Divisional Hospital. It may be mentioned here that at least 13 people were killed and 20 others had been injured after lightning struck various parts of the state on Monday morning. Selim Seikh (35) died when a wall inside a brick kiln fell on him at Sagardighi during the storm. The victim was the manager of the brick kiln. Three other workers of the brick kiln were injured in the incident. They were rushed to Murshidabad Medical College and Hospital by the local residents. One person was killed when portion of a wall collapsed and fell on him at Sagardighi area of the district, the police said. It may be mentioned here that after Monday’s incident in which 13 people were killed, various district authorities had issued an alert to all the blocks, urging people not to be in the open or working in the field to avert such incidents.last_img read more


Energy drinks may up blood pressure

first_imgA new study has linked the consumption of energy drinks to serious cardiovascular disorders possibly due to the caffeine and other stimulants they contain.The researchers from Mayo Clinic, Rochester, examined the effect of energy drink consumption on hemodynamic changes, such as blood pressure and heart rate. Anna Svatikova and her colleagues randomly assigned 25 healthy volunteers (aged 18 years or older) to consume a can (480ml) of a commercially available energy drink and placebo drink within five minutes, in random order on two separate days, a maximum two weeks apart.  Also Read – ‘Playing Jojo was emotionally exhausting’The placebo drink, selected to match the nutritional constituents of the energy drink, was similar in taste, texture, and colour but lacked caffeine and other stimulants of the energy drink.The researchers found that caffeine levels remained unchanged after the placebo drink, but increased significantly after energy drink consumption.The energy drink’s consumption elicited a 6.2 per cent increase in systolic blood pressure while diastolic blood pressure increased by 6.8 per cent. Also Read – Leslie doing new comedy special with NetflixThe average blood pressure increased by 6.4 per cent after consumption of the energy drink. There was no significant difference in heart rate increase between the two groups, the researchers found.The average norepinephrine level increased from 150 pg/ml to 250 pg/ml after consumption of the energy drink and from 140 pg/ml to 179 pg/ml after placebo.“These acute hemodynamic and adrenergic changes may predispose to increased cardiovascular risk,” the authors observed.The study was presented at the American Heart Association’s Scientific Sessions 2015.last_img read more


Women paid low despite equal education

first_imgWomen are at par with men in education but have failed to secure equal access to quality jobs and representation in the government, finds a global study that suggests the need for greater policy interventions to close gender barriers.The findings, from more than 150 countries, showed that women have reached 91 per cent of the education that men have. Yet, they have reached only 70 per cent of the male rate of employment. In more than half the world’s countries, female education rates are now similar, or greater, than men, up from 33 per cent in 1990. Despite these gains, the paper published in the Journal of African Development, showed that women’s employment rates are 30 per cent lower than men’s – even less in some regions of Asia, Latin America, the Middle East and Africa.  Also Read – ‘Playing Jojo was emotionally exhausting’The share of women employed in the relatively high-paying industrial sector compared to men has dropped 20 percentage points since 1990. “Men have more of the high paying jobs, so women are squeezed into lower-paid positions. And female unemployment continues to be about 30 per cent higher than men’s, worldwide; so those women are not able to earn their own livelihood,” said Stephanie Seguino, economist at University of Vermont in US. Greater exclusion from high-paying jobs and a disproportionate amount of unpaid household work, including care for children and ageing parents, offer two key reasons for women’s lower employment and income, the researchers said. Also Read – Leslie doing new comedy special with NetflixFurther, the gender gap is seen to be widest in political representation. Overall, women share of parliamentary seats is 25 per cent compared to men’s. But, political representation for women has increased from 14 per cent in 1990 when compared to men. Legislative bodies in some nations, including Haiti and Qatar, still have no female members.Whereas countries such as Canada, Rwanda, Norway have adopted political gender based quotas to improve female representation in government. “Without women, governments are more likely to spend taxpayer money in ways that disproportionately benefit men – or at least ignore the extra burdens on women,” Seguino explained.last_img read more


Illegal arms factory unearthed at Kultali 2 held

first_imgKolkata: The Special Operation Group (SOG) Baruipur District Police and Kultali police station have unearthed an illegal arms factory at Kultali in South 24-Parganas on Thursday night.During a search operation police seized several firearms, unfinished firearms and apparatus for manufacturing such firearms. Two persons have been arrested in this raid. Sources informed that the sleuths are suspecting more persons are involved in this matter. According to the police, Baruipur District Police got a tip-off on Thursday about an illegal arms factory that is operational at Ambikanagar in Kultali. Also Read – Rain batters Kolkata, cripples normal lifeThe police identified a house owned by one Biswanath Mondal. After the sleuths were sure that Biswanath is the person behind running of the arms factory, Baruipur Police and Kultali police station formed a team and raided his house late on Thursday night. During the raid, the sleuths found 4 long single barrel firearms, 2 one shoter pipe gun, 6 rounds of live ammunition, six live bombs and some unfinished firearms. Several apparatus such as iron pipes, springs, wooden long arms bats, iron rods, firing pins, a drill machine, a polish Machine, a hand lathe machine and a few iron blades were also recovered. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedPolice have also arrested another person identified as Bikash Mondal from there. After interrogating the duo, the sleuths came to know about a person from Bihar who used to manufacture the firearms and he has gone to Bihar to celebrate Chhath. Before this person came to Bengal, several miscreants used to manufacture arms using Biswanath’s house. They used to manufacture small firearms — the sound produced while making those were very low. Thus, no one in the area suspected something fishy. Sources informed that police will take the duo in to custody and will interrogate for more information. The sleuths are also checking if any more illegal firearms factory is being operational in any part of the district.last_img read more


18th edition of Stylefile held in city

first_imgKolkata: Stylefile, Kolkata’s eagerly-awaited lifestyle exhibition, was held on Saturday at The Old Bungalow on Burdwan Road in Alipore. The eighteenth edition of Stylefile was attended by a galaxy of leading designers, sculptors, painters and jewellers, who showcased their creations. Some promising new names also took part in the event.Urban Architecture was the chosen canvas of Stylefile that showcased the latest in lifestyle, fashion and art. Juxtaposing geometric patterns of the cityscape with contemporary pieces from a selection of artists, Stylefile: Urban Geometry aimed at the convergence of fashion, art and architecture. The Night Bazaar remained open on Saturday from 3 pm to 11 pm. Preeti Goenka, co-founder and organiser of the event, said: “This year, we have celebrated fashion, art and design and instilled innovation and imagination to make our everyday life inspiring.” Also Read – Rain batters Kolkata, cripples normal lifeAccording to Sumedha Saraogi, who co-founded Stylefile 16 years ago on October 5, 2002, “We put in a lot of effort to curate this year’s Stylefile, with a never before seen collection of fashion, accessories and art. Among the participants, there were stalwarts who are always there with us in Stylefile. We also had some new designers, as well as a few who came back after a gap.” Apart from designers and artists from UK, Israel and Pakistan, there was participation from cities all across the country, like Kolkata, Mumbai, New Delhi, Hyderabad, Visakhapatnam etc.last_img read more


Humans need more rest for better wellbeing

first_imgWhat will you do to find yourself at complete rest: Reading, being with nature, being on your own, listening to music or doing nothing in particular? Better choose one fast for your own well-being as you grow old.According to the world’s largest survey of more than 18,000 people from 134 different countries on this topic, over two thirds (68 per cent) of the public would like more rest.Nearly a third (32 per cent) of respondents said they need more rest than the average person, while 10 per cent think they need less. Also Read – Add new books to your shelf“The survey shows that people’s ability to take rest, and their levels of well-being, are related. These findings combat a common, moralising connection between rest and laziness,” said lead researcher Felicity Callard, social scientist at Durham University in Britain. Rest – a much broader category than sleep – has physical, mental and spiritual components, the study said. The online survey – rest test – found that those who felt they needed more rest scored lower in terms of well-being.  Also Read – Over 2 hours screen time daily will make your kids impulsiveSimilarly, those who responded saying they think they get more rest than average or do not feel the need for more rest, had well-being scores twice as high as those who wanted more rest. This suggests that the perception of rest matters, as well as the reality, the researchers observed.In addition, people found reading (58 per cent), being in the natural environment (53.1 per cent), being on their own (52.1 per cent), listening to music (40.6 per cent), doing nothing in particular (40 per cent) as the top five most restful activities that is often done alone. “It’s intriguing that the top activities considered restful are frequently done on one’s own,” Callard said.“Perhaps it’s not only the total hours resting or working that we need to consider, but the rhythms of our work, rest and time with and without others,” he added. The survey asked respondents to state how many hours of rest they had within the last 24 hours. On average, being younger and having a higher household income was associated with having fewer hours of rest. Further, those with caring responsibilities or in shift work which included nights also reported fewer hours of rest.“This survey shows just how crucial it is to our well-being to ensure people do have time to rest. We can begin to try to work out what the optimum amount of rest might be and how we should go about resting,” explained Claudia Hammond, presenter of Radio 4’s All in the Mind and associate director of Hubbub – an international team of scientists, humanists, artists and broadcasters in London. The survey was presented during BBC Radio 4’s programme –The Anatomy of Rest.last_img read more