Gamma ray bursts are large, high energy explosions that last only a short period of time.
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Thus, the shape and metals of W49B show the explosion has the jets we associate with gamma-ray bursts.
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Too bright, it appears, for any of the existing theories of gamma-ray bursts.
Since its launch in 2004, Swift has detected over 700 gamma-ray bursts.
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Dr Andrew Levan from the University of Warwick says these longer gamma-ray bursts are actually caused by really, really big stars going supernova.
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Had it been situated in a much more distant galaxy -- as many gamma-ray bursts are -- its signal would have been relatively feeble.
But they are particularly associated with events called gamma-ray bursts, which are the biggest explosions yet detected in the universe brighter than a billion suns.
Early results from Schaefer's study of the movements of gamma-ray bursts suggest that dark energy is different far out in space, and therefore way back in time.
Proposed sources of such high heating in the early solar nebula have included everything from colliding asteroids, gamma ray bursts, solar x-ray flares, even lightning in the proto-planetary disk itself.
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And if a few more such events can be found, that should settle once and for all whether gamma-ray bursts are merely little local upheavals or the biggest noises in creation.
Interestingly, an April 18 paper in the journal Nature reported that upper limits for neutrinos measured from IceCube are low enough that gamma-ray bursts are unlikely to be the sole source of ultra-high energy cosmic rays.
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