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Collapse and Explosion of a SuperGiant Star Hundreds of Times Larger than the Sun
Wednesday, April 17, 2013 7:05
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On December 25,2010, NASA’s Swift spacecraft detected an unusual gamm-ray burst in the constellation Andromeda. At first scientists proposed two scenarios to explain the show decline in gamma rays that Swift observed.
The first is a cometr falling into a Neutron star.
The second is a Neutron star falling into its companion star. New findings suggest a third and more likely option. The explosive death of a star hundreds of times the size of our Sun
GRB 101225A, better known as the ‘Christmas burst,’ was an unusually long-lasting gamma-ray burst. Because its distance was not measured, astronomers came up with two radically different interpretations. In the first, a solitary neutron star in our own galaxy shredded and accreted an approaching comet-like body. In the second, a neutron star is engulfed by, spirals into and merges with an evolved giant star in a distant galaxy. Now, thanks to a measurement of the Christmas burst’s host galaxy, astronomers have determined that it represented the collapse and explosion of a supergiant star hundreds of times larger than the sun. Credit: NASA’s Goddard Space Flight Center Scientific Visualization Studio
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https://www.youtube.com/watch?v=3cL3HlF1BR0
