Published 07:58 IST, January 18th 2021
NASA reveals ‘previous trustworthy’ galaxy has brilliant outbursts every 114 days
As per a news release by NASA, a team has discovered a distant galaxy that erupts roughly every 114 days. The researchers saw repeated outbursts
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An international team has discovered a distant galaxy that erupts roughly every 114 days, as per a news release by NASA. researchers saw repeated outbursts, every 114 days, in a galaxy which is some 570 million light-years away from Earth. As per NASA, scientists have studied 20 repeated outbursts of an event called ASASSN-14ko.
Old galaxy investigated
Anna Payne, a NASA Graduate Fellow at University of Hawai’i at Māa, said, “se are most predictable and frequent recurring multiwavelength flares we’ve seen from a galaxy’s core, and y give us a unique opportunity to study this extragalactic Old Faithful in detail”. She added, “We think a supermassive black hole at galaxy’s center creates bursts as it partially consumes an orbiting giant star”. findings were presented by Payne on January 12 at virtual 237th meeting of American Astromical Society.
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Astromers have highlighted that galaxy has unusually bright and variable centers as active galaxies. y claim that se objects can produce much more energy than combined contribution of all ir stars. However, astromers are interested in finding active galaxies with flares that happen at regular intervals. This might help m in identifying a new phemen.
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Jeremy Schnittman, an astrophysicist at NASA’s Goddard Flight Center in Greenbelt, Maryland, said, “ASASSN-14ko is currently our best example of periodic variability in an active galaxy, despite decades of or claims, because timing of its flares is very consistent over six years of data Anna and her team analyzed. This result is a real tour de force of multiwavelength observational astromy”.
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For a detailed look at flare, researchers used TESS data. Talking about same co-author Patrick Vallely said that data provided a very ‘thorough’ picture. Padi Boyd, TESS project scientist at Goddard said, “TESS was primarily designed to find worlds beyond our solar system. But mission is also teaching us more about stars in our own galaxy, including how y pulse and eclipse each or. In distant galaxies, we’ve seen stars end ir lives in superva explosions. TESS has even previously observed a complete tidal disruption event. We’re always looking forward to next exciting and surprising discoveries mission will make”.
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(Im Credits: NASA)
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07:58 IST, January 18th 2021