Posted on 11/16/2010 5:58:57 AM PST by decimon
A gamma-ray burst is an immensely powerful blast of high-energy light thought to be generated by a collapsing star in a distant galaxy, but what this collapse leaves behind has been a matter of debate.
A new analysis of four extremely bright bursts observed by NASA's Fermi satellite suggests that the remnant from a long-duration gamma-ray burst is most likely a black hole - not a rapidly spinning, highly magnetised neutron star, or magnetar since such a burst emits more energy than is theoretically possible from a magnetar.
'Some of the events we have been finding seem to be pushing right up against this total limit for a neutron star progenitor system,' said S. Bradley Cenko, a post-doctoral fellow from the University of California, Berkeley.
(Excerpt) Read more at sciencecentric.com ...
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