Those short bursts of gamma rays that occur everyday somewhere in the universe and caused by collisions between black holes and neutrinos in star-forming galaxies, according to a new report from Penn State Caltech. The origin of the bursts--which may last only a few thousandths of a second but shine brighter than a billion suns during the short interval they are at peak power--have long been a mystery to scientists.
Gamma ray bursts detected on May 9 and July 9 provided the evidence for the conclusion. "I am amazed that we have been able to make such great strides in the space of a few months," said Caltech's Shri Kulkarni in a prepared statement. "Now it is time to start addressing what beast lies at the heart of these explosions."