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Mysterious 'Tasmanian devil' space explosion baffles astronomers

Scientists still can’t explain what is causing unusually bright explosions in space — but a surprising observation might offer clues. Scientists still can’t explain what is causing unusually bright explosions in space — but a surprising observation might offer clues. ....

Columbia University , New York , United States , Raffaella Margutti , Verac Rubin , Bill Saxton , Brian Metzger , Anna Ho At Cornell University In Ithaca , University Of California , Fast Blue Optical , Cornell University , Giant Magellan Telescope , New York City ,

Holy Cow! What is Causing Cosmic Explosions More Powerful Than Supernovas?

Four years ago astronomers discovered an unusual and powerful cosmic blast they nicknamed "the Cow." The mystery of what caused it and similar Fast Blue Optical Transients is still unsolved. Fast blue optical transients or FBOTs are flashes of light that are 10 times more luminous than supernovas whose origins are still unknown. ....

University Of Maryland , United States , Northwestern University , Baltimore County , Goddard Space Flight Center , Bill Saxton , University College London , Califonia Institute Of Technology , Sloan Digital Sky , Ore Gottlieb Northwestern University , Blue Optical , Fast Blue Optical Transient , Asteroid Terrestrial Impact Last Alert System , Sloan Digital Sky Survey , Space Flight Center , Fast Blue Optical Transients , Califonia Institute , Cosmic Cocoon Explanation , Fast Blue Optical ,

uGMRT reveals for the first time the patchy environment of a rare cosmic explosion

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IMAGE: The green and red solid/dotted lines denote different theoretical models. The turn over point of this light curve enabled the determination of material velocity from the explosion, magnetic field strength,.
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Credit: A. J. Nayana and Poonam Chandra
Scientists from the National Centre for radio Astrophysics of the Tata Institute of Fundamental Research (NCRA-TIFR) Pune used the upgraded Giant Metrewave Radio Telescope (uGMRT) to determine that AT 2018 cow, the first of a newly discovered class of cosmic explosions, has an extremely patchy environment. Sources like AT 2018cow release an enormous amount of energy, nonetheless fade extremely rapidly. This along with their extremely blue color has led to them being called FBOTs for Fast Blue Optical Transient. This is the first observational evidence of inhomogeneous emission from an FBOT. The origins of FBOTs are still under debate, but proposed models include explosion of a massive ....

Poonam Chandra , National Centre , Tata Institute , Fundamental Research , Giant Metrewave Radio Telescope , Fast Blue Optical , Astrophysical Journal , Space Planetary Science , பூனம் சந்திரா , தேசிய மையம் , டாடா நிறுவனம் , அடிப்படை ஆராய்ச்சி , வேகமாக நீலம் ஒளியியல் , வானியற்பியல் இதழ் , இடம் கிரகங்கள் அறிவியல் ,