Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
Scientists may be a step closer to discovering how gamma-ray bursts come to be some of the most powerful explosions in the known universe.
Further complicating the situation is the fact that no two GRB light curves are exactly the same, and the duration of the bursts can last from mere milliseconds to tens of minutes. "The mechanism that produces light in a GRB pulse somehow produces a brightness pattern, then subsequently generates this same pattern in reverse order," he said."That is pretty weird, and it makes GRBs unique."
"Since the GRB is relatively short-lived, it has always been assumed that the jet remains pointing at us throughout the event. But the time-reversed pulse characteristics have been very hard to explain if they originate from within a nonmoving jet."
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