Continuing Search Of The Egret Data For High-Energy Gamma-Ray Microsecond Bursts
GAMMA-RAY BURSTS - 3RD HUNTSVILLE SYMPOSIUM, PTS 1 AND 2(1996)
Abstract
In the mid 1970's, Hawking (1) and Page and Hawking (2), investigated theoretically the possibility of detecting high-energy gamma rays produced by the quantum-mechanical decay of a small black hole created in the early universe. They concluded that, at the end of the life of the small black hole, it would radiate a burst of gamma rays peaked near 250 MeV with a total energy of about 10(34) ergs in the order of a microsecond or less if certain details of the theory were true. The characteristics of a black hole are determined by laws of physics beyond the range of current particle accelerators; hence, the search for these short bursts of high-energy gamma rays provides at least the possibility of detecting directly the gamma rays from such bursts, and a search of the EGRET data has led to an upper limit below 5 x 10(-2) black hole decays per pc(3) yr(-1), placing constraints on this and other theories predicting microsecond high-energy gamma-ray bursts.
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Key words
particle acceleration,gamma ray,black hole,gamma ray burst,quantum mechanics
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