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February 15, 2016 10:00 am
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/qJd2nFkLQEg/uw-astronomers-find-a-rare-supernova-imposter-in-a-nearby-galaxy
UW Astronomers Find A Rare Supernova 'Imposter' In A Nearby Galaxy
After a star explodes as a supernova, it usually leaves behind either a black hole or what's called a neutron star -- the collapsed, high-density core of the former star. Neither should be visible to Earth after a few weeks. But this supernova -- SN 2010da -- still was. "SN 2010da is what we call a 'supernova imposter' -- something initially thought to be a supernova based on a bright emission of light, but later to be shown as a massive star that for some reason is showing this enormous flare of activity," said Breanna Binder, a University of Washington postdoctoral researcher in the Department of Astronomy and lecturer in the School of STEM at UW Bothell. Many supernova imposters appear to be massive stars in a binary system -- two stars in orbit of one another. Stellar astrophysicists think that the impostor's occasional flare-ups might be due to perturbations from its neighbor.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/qJd2nFkLQEg/uw-astronomers-find-a-rare-supernova-imposter-in-a-nearby-galaxy
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