New theory suggests some black holes might predate the Big Bang

first_img(PhysOrg.com) — Cosmologists Alan Coley from Canada’s Dalhousie University and Bernard Carr from Queen Mary University in London, have published a paper on arXiv, where they suggest that some so-called primordial black holes might have been created in the Big Crunch that came before the Big Bang, which lends support to the theory that the Big Bang was not a single event, but one that occurs over and over again as the universe crunches down to a single point, then blows up again, over and over. 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 idea is based on the fact that the Earth, and the rest of the known universe is occasionally bombarded with unexplained bursts of gamma rays; something that could, according to Coley and Carr, be the result of primordial black holes running out of energy and disintegrating.Primordial black holes are thought to be of a different type than the regular kind that are formed when a supernova occurs, leaving a void that is filled by the entity that is commonly known as a black hole. Many theorists support the notion that there does exist other types of black holes that were formed in the first “moments” after the Big Bang; black holes that would be smaller and created by the energy of the Big Bang itself. In this new theory, however, Coley and Carr suggest that some of these black holes, if they do actually exist, might have been created by the collapsing universe as part of the Big Crunch, and then somehow escaped being pulled into the pinpoint singularity comprised of everything else. And then, after the Big Bang, they simply assimilated with the newly formed universe. One problem they agree on is that it would likely be impossible to tell the difference between pre and post Big Bang primordial black holes.It’s all purely speculation of course, as no one has ever actually seen a primordial black hole, or even offered much proof that they exist, but it does raise very difficult questions; ones that are impossible for scientists much less casual observers to answer. Questions such as, if the universe contracts, then blows up, over and over, has this gone on forever? Or is it possible that our view of the universe is so limited that we’re only seeing one tiny fraction of it, and thus, any theories or explanations we offer, are little more than guesses. And finally, maybe the hardest one of all; is it possible that the universe actually goes on forever; that it has no boundaries or borders? Which would mean the Big Bang was actually little more than one tiny event going on in one small part of an endless expanse.It’s possible that no matter how long we as a people survive, we’ll never really know the answers to such questions, which might in the end mean, we’ll just have to take our theories on faith. Citation: New theory suggests some black holes might predate the Big Bang (2011, May 10) retrieved 18 August 2019 from https://phys.org/news/2011-05-theory-black-holes-predate-big.html An artist’s rendering of the M87 black hole. Image credit: Gemini Observatory/AURA/Lynette Cook. More information: Persistence of black holes through a cosmological bounce, B. J. Carr, A.A. Coley, arXiv:1104.3796v1 [astro-ph.CO] arxiv.org/abs/1104.3796AbstractWe discuss whether black holes could persist in a universe which recollapses and then bounces into a new expansion phase. Whether the bounce is of classical or quantum gravitational origin, such cosmological models are of great current interest. In particular, we investigate the mass range in which black holes might survive a bounce and ways of differentiating observationally between black holes formed just after and just before the last bounce. We also discuss the consequences of the universe going through a sequence of dimensional changes as it passes through a bounce. © 2010 PhysOrg.com Scientists glimpse universe before the Big Bang Explore furtherlast_img read more

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Elegy to the nomadic Tibetan life

first_imgTransforming every last sunday of the month into a treat for film buffs, the ongoing series of the best and rarest films from the first edition of Dharamsala Film Festival brings you Summer Pasture-a riveting snapshot of the diminishing nomadic community of Tibetan herders. It is a critically acclaimed feature length documentary by filmmakers Lynn True, Nelson Walker, and Tsering Perlo.Termed as ‘a consistently compelling portrayal of Tibetan hinterland’ by New York Times critic Stephen Holden, it was filmed during the summer of 2007. The film offers a rare opportunity to see the lives of a highly insular community in ransition. It was awarded the Best Feature Length Film award at the 2010 Banff Mountain Film Festival.last_img read more

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Art and its dimension

first_imgVolte’s Per Emanuelsson and Bastian Bischoff (Humans Since 1982) will take you through a magical journey with their unique concept of A million times, a kinetic work with 61 clocks put together into one big instillation. Ian andRichard ABell (Based Upon) will allure you with their work inspired by natural and urban landscapes, explorations of archetypal forms, patterns and by the narrative histories woven within a place or group of people. Francesco Clemente’s work Taking Refuge depicts the fulfillment of basic human need for shelter, nomadic yet fashionable tent shows a very different and distinctive approach to art. Also Read – ‘Playing Jojo was emotionally exhausting’Among other recognised Indian artists associated with Volte Art Projects are Ranbir Kaleka, Nalini Malini and Sheba Chhachhi.  Kaleka, will be showcasing his paintings, work on canvas, in oils as well as mixed media, are almost surrealist in their treatment of scenes from everyday life. Nalini Malini’s work is influenced by her experiences as a refugee of the Partition of India. Characteristics of her work have been the gradual movement towards new media, international collaboration and expanding dimensions of the pictorial surface into the surrounding space as ephemeral wall drawing, installation, shadow play, multi projection works and theatre. Also Read – Leslie doing new comedy special with NetflixAnd lastly, Sheba Chhachhi, photographer and installation artist, her photographic work is predicated on building a relationship with her subjects, the photographs emerging from an invitation to perform the self. The installations address ongoing concerns –the question of transformation, retrieving the marginal and the play between the mythic and social in the context of gender, body, representation, urban ecologies, violence and visual culture. Public art interventions are an important arena for Chhachhi and she has created several onsite works in the city of Delhi over the last few years.Expressing enthusiasm over this year’s artworks, Volte Art Projects’ founder and director, Tushar Jiwarajka said, “This year’s Volte Art Projects is refreshingly significant and I feel greatly honored for being able to expand our country’s art outlook by joining hands with artists who are not only original but also constantly innovating, breaking the conservative approach towards art with their various forms of subtle and bold expressions.”last_img read more

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New CM Kejriwal holds meetings at Secretariat

first_imgMinisters Manish Sisodia, Asim Ahmed Khan, Sandeep Kumar, Satyendar Jain, Gopal Rai and Jitender Singh Tomar also accompanied him.Kejriwal had a meeting with all his ministers in his office and is believed to have discussed future strategy with them.Government officials welcomed Kejriwal and other ministers as they reached the Secretariat here.Immediately, after taking oath, the 46-year-old leader addressed the gathering at Ramlila Ground and unveiled the priorities of his government which included steps against corruption, communal elements, VIP culture and assured Delhiites that his government will fight for full statehood for the national capital. Also Read – Need to understand why law graduate’s natural choice is not legal profession: CJIWarning his party leaders and workers against arrogance, he said it was the reason for the defeat of Congress and BJP, which had bagged a huge majority in Lok Sabha polls just nine months ago.Kejriwal, who shot into prominence during the agitation led by 77-year-old Anna Hazare in support of Jan Lokpal Bill in 2011, assured the people that his government will bring the bill soon.”Lokpal Bill is very important, it needs to be passed as soon as possible,” he said. Also Read – Health remains key challenge in India’s development: KovindReacting to recent attacks on churches and a Christian school yesterday in Delhi, he said, “In recent days, we witnessed several communal incidents in Delhi. We witnessed burning of churches. I want to warn the elements who are responsible for these incidents.””I want to make Delhi a place where people of all religions feel safe,” said Kejriwal, asserting that people of all religions, castes and classes voted for AAP.Emphasising that he wants cooperation and good relations with the Centre, Kejriwal said BJP had promised to grant full statehood to Delhi. “Before the elections, they had promised this to the people of Delhi. It’s not possible for the Centre to take care of important issues related with governance of the state, so I hope the Centre will fulfil their promise,” the Chief Minister said.Cautioning his party, he said, “I can see arrogance in reports that AAP will fight elections in other states…. We have to make sure that we don’t get carried away and become arrogant.”Asserting that his government will not spare anyone who commits wrong, he said, “Some people might try to malign us by impersonating as AAP workers. I want to tell the law and order machinery not to spare anyone who indulges in unlawful activities.”During his address, Kejriwal also mentioned his opponents in the Delhi polls- BJP’s Kiran Bedi and Congress’ Ajay Maken.”I respect Kiran Bedi. She is like my elder sister. She has good experience in administration. I need her advice. I will cooperate with Ajay Maken too. I will involve everyone to make Delhi an ideal state,” the Chief Minister said.Starting his address with “Bharat Mata ki Jai”, Kejriwal ended his nearly half-an-hour speech with singing AAP’s anthem ‘Insaan ka ho Insaan se Bhaichara’.last_img read more

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AR Rahman Mark Ronson roped in for NH7 Weekender

first_imgOscar-winning Indian composer A.R. Rahman, Grammy winning English musician DJ and record producer Mark Ronson and will add to the riveting experience of music enthusiasts at the Bacardi NH7 Weekender to be held in five cities.The multi-city music festival will lay a musical pitch in Shillong (October 23-24) and move towards Bengaluru (December 5-6) with stops in Kolkata, Delhi and Pune. Ronson, the Uptown funk hitmaker, who had earlier shared his inclination towards Indian classical music, will be debuting in India with the music fest.  He even took to Twitter to share the news with his followers. The post read, “First ever trip to India for the NH7 weekender also ft Flylo Megadeath and AR Rahman!”.  The artist’s names started to trickle on social networking site Twitter on Wednesday and artists Vishal Dadlani, Dualist Inquiry, and Rohan Joshi added to the buzz.last_img read more

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Khadi to become youthcentric

first_imgNarendra Modi in his ‘Mann ki Baat’ Radio programme addressed the nation to at least buy one Khadi garment. Taking the initiative forward Kalraj Mishra, Union Minister for MSME, has taken many steps to expand the Khadi market.On September 18, Prime Minister’s Employment Generation Programme (PMEGP) Exhibition of Gujarat, ‘Gujarat Khadi Utsav’ was inaugurated by Kalraj Mishra at Khadi Gramodyog Bhavan. The exhibition will continue till September, 30.  Also Read – ‘Playing Jojo was emotionally exhausting’To provide marketing support to micro-entrepreneurs a permanent exhibition has been set up. On this occasion, readymade garments with Khadi patch mirror work from Kutch-Bhuj, was also launched by the Union Minister Giriraj Singh, Minister of State for MSME and Anup K Pujari, Secretary, Government of India, Ministry of MSME was the guest of honour for the occasion. S N Tripathi, Additional Secretary, (SME), B H Anil Kumar, Joint Secretary (ARI), M/o MSME and Arun Kumar Jha, CEO and Commissioner, KVIC were also present on the occasion. An exclusive product of Gujarat, ready-made Khadi patch mirror work from Kutch-Bhuj is made available for sale.  Also Read – Leslie doing new comedy special with NetflixIn addition woodcraft, designer footwear, Kutch embroidery, organic products, herbal products, food products and handicraft items from Gujarat are also displayed. As a part of Khadi sales promotion, 20 per cent discount on all Khadi fabric and readymade products is offered to the customers during this period. Up to 60 per cent discount is also available on selected Khadi items for stock clearance. Khadi Gramodyog Bhavan is organising regular exhibitions from different states by involving entrepreneurs and institutions from different states on rotation basis. The Bhavan is also bringing designer garments and products which suit the customer’s taste and preferences. They also are  focusing on the choices of the youth. This will bring more sustainability and viability to the Khadi institutions and micro enterprises working across the country.last_img read more

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TMC observes second black day

first_imgKolkata: Trinamool Congress observed “black day” across the state on Sunday, protesting against the incident at Silchar Airport, where the party’s MPs, an MLA and a minister were “manhandled” when they went to speak to people after 40 lakh names were excluded in the final draft of Assam’s National Register of Citizens (NRC). Sunday was the second day when “black day” was observed by Trinamool Congress.It may be recalled that on Friday, Trinamool Congress Secretary General Partha Chattreethe had said that ‘black day’ will be observed on Saturday and Sunday, protesting against the undemocratic confinement of the party leaders at Silchar. Also Read – Rain batters Kolkata, cripples normal lifeOn Sunday too, Trinamool Congress workers and supporters wore black badges and held rallies in several parts of the state. They also held meetings condemning the undemocratic confinement of the MPs, an MLA and senior minister Firhad Hakim.There were rallies at different places, including Garia, where Trinamool Congress workers and supporters staged a demonstration that continued for around two hours. All wore black badges and shouted slogans protesting against the harassment of their leaders at Silchar Airport. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedSenior Trinamool Congress leader and the state’s Food and Supplies minister Jyotipriya Mallick headed a rally at Habra in North 24-Parganas. There was a huge rally in this connection at Kanksa in West Burdwan.Protest marches were also organised at various places in Howrah. The party supporters carried posters and placards carrying messages protesting the incident at Silchar Airport. The party workers in Rajarhat also took out rallies and staged demonstrations at various places in the area.It may be recalled that Chief Minister Mamata Banerjee had criticised the Centre in this connection, stating that it seems “super emergency” is going on in the country. She had also raised her voice against the exclusion of 40 lakh names from Assam’s NRC.last_img read more

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Biswa Bangla Sharad Samman announced

first_imgKolkata: Minister of State for Cultural Affairs and Tourism Indranil Sen announced the Biswa Bangla Sharad Samman in 11 different categories on Monday. As many as 75 Pujas receiving the award will take part in the Red Road Carnival scheduled on October 23.The categories in which the awards were announced include Best Idol, Best Pandal, Best Theme, Best Lighting Arrangement, Best Eco-friendly Puja, Best Invention, Best Ambience, Best Artist, Best Dhakeshri, Best Biswa Bangla branding and Best Traditional Puja and also Best of the Best award. Also Read – Rain batters Kolkata, cripples normal lifeThe Best of the Best award was bagged by as many as 17 Pujas including Suruchi Sangha of New Alipore, Chetla Agrani, Naktala Udayan Sangha, Tridhara, Kashi Bose Lane, Ahiritola Sarbojonin to name a few. Chief Minister Mamata Banerjee has penned the theme song for the festival and also composed the music for Suruchi Sangha. The Best Idol prize has gone to 11 Pujas, the Best Pandal to as many as 9 Pujas and Best Lighting to 6 Pujas. There are three categories of the award — Best Puja, Best Idol and Best Pandal — for the Pujas in the rest 22 districts of Bengal which will be announced soon. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedMeanwhile, lakhs of pandal hoppers hit the streets on the day of Mahashashti to visit their favourite Puja mandaps. The weather office has predicted pleasant weather during the Puja days much to the joy of the pandal-hoppers so the Puja revelers will hit the road more in the next four days — Saptami, Ashtami, Nabami and Dashami.”We are thankful to Chief Minister Mamata Banerjee as she starts inaugurating Puja mandaps from the day of Mahalaya. It gives us opportunity to visit the Puja mandaps for more number of days. We try to cover entire Kolkata and its adjoining areas,” Satadal Chatterjee, a college student said. Additional policemen have been deployed to ensure better crowd control and traffic management as well. Meanwhile, the Kolkata Municipal Corporation (KMC) on Monday announced the name of the Puja committees that will be the recipients of the Kolkata Shree 2018. The prizes are given out every year to the best Pujas by the civic body.Mayor Sovan Chatterjee announced the name of Puja committees that have won the award for this year. 81 Puja committees were chosen for the awards from 402 applications that were received by the civic body. The competition was judged by several eminent personalities.The 10 categories in which prizes were announced includes ‘Serar Sera’, ‘Sera Pujo’, ‘Sera Pratima’, ‘Sera Sailpik Utkorsho’, ‘Sera Bishoy’, ‘Sera Aloksajja’, ‘Sera Paribesh’, ‘Sera Parichana Pujo’, ‘Sera Sambhabana’ and ‘Mayor’s Choice’.The Pujas that won in the category of ‘Serar Sera’ are Chetla Agrani, 95 Palli, Suruchi Sangha and Tridhara Akalbodhan. In the ‘Sera Pujo’ category, the winners are: Naktala Udayan Sangha, Rajdanga Nabauday Sangha, Hindustan Club and Abasar Sarbojanin. Baghbazar Sarbojanin, Tala Prattay, Kashi Bose Lane and Behala Natun Dal.The awards for ‘Sera Sailpik Utkorsho’ category was bagged by Shib Mandir Sarbojanin, Selimpur Pally Sarbajanin, 66 Pally and Bosepukur Sitala Mandir; ‘Sera Bishoy’ category includes Bhowanipore Swadhin Sangha, 75 Pally Sarbojanin, Bosepukur Talbagan and Samaj Sebi Sangha; ‘Sera Aloksajja’ category includes Ekdalia Evergreen, Badamtala Ashar Sangha, Dakshin Kalikata Sarbojanin and Kalighat Milan Samity.A total of 45 Puja committees have won the category of the ‘Mayor’s Choice’. The Mayor’s Choice award will go up as the Mayor himself will visit several pandals during the Puja days. Last year, the total awards were 101. “It is expected to be more or less same this year also,” a KMC official added.last_img read more

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One held for selling ganja to school students

first_imgKolkata: The Narcotics Cell of Kolkata Police has arrested a youth on Monday for allegedly selling ganja to school students.The accused was arrested in front of a reputed English medium school in Park Street area.According to police, on Monday, police personnel from the Narcotics Cell got a tip-off that a youth was seen selling ganja in Park Street area. Working on the information, police on Monday kept a strong vigil in and around the Park Street. Meanwhile, in the afternoon police came to know that the suspect had arrived in front of the sschool. Immediately the police team surrounded the suspect identified as Shaikh Rashid Iqbal. During search police recovered 1.5 kg ganja from his possession. During interrogation, Iqbal stated that he used to sell ganja in packets 10 grams for Rs 1,000. Iqbal confessed that he used receive orders over phone. He sold the ganj around schools and colleges of ParkStreet and Park Circus area.last_img read more

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TMCs Dutta quits as Bidhannagar mayor to decide next move

first_imgKolkata: Trinamool Congress (TMC) legislator and Bidhannagar Mayor Sabyasachi Dutta on Thursday resigned from the civic body post, complaining lack of cooperation from the West Bengal government. Dutta’s announcement came a day after the Calcutta High Court quashed a notification by the Bidhannagar Municipal Corporation’s joint commissioner for convening a councillors’ meeting to move no-confidence motion against him. “I have always worked for the welfare of poor and working class people and would continue to do so till my last breath. I did not get enough cooperation from the state government. As a people’s representative if I am not able to work as per the Municipal Corporation Act, I have no right to hold on to the mayor’s post. Hence, I have tendered my resignation,” Dutta told reporters. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: Mamata “I have sent my resignation letter to Corporation Chairperson Krishna Chakraborty, the commissioner and 39 councillors,” he said. When asked whether he would quit TMC or join any other political outfit, Dutta said nothing had been decided in that regard. “It’s not mandatory for me to be in politics. Also, it’s not necessary that I will have to compromise with unethical practices. I have never done that and will not be do so,” Dutta said. Alleging lack of coordination between different departments, Dutta said he was facing hostility as mayor from a section of civic body representatives and TMC leaders involved in illegal constructions and filling up of water bodies in the Rajarhat-Gopalpur area as he was against that. Also Read – Lightning kills 8, injures 16 in state The nearly four-month drama centring around Dutta’s controversial statements about the TMC and his affinity with former TMC leader Mukul Roy, now in the BJP, reached climax with the party recently clipping his wings and asking him to quit, while empowering the municipal corporation’s deputy mayor to take over most of the mayoral responsibilities. Speculations have been rife about Dutta’s political intentions since Roy dropped in at his Salt Lake residence before the elections. The incident was followed by a controversy over a social media post that apparently came from Dutta’s mobile.last_img read more

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