We don't think so. The problem is that theoretical predictions suggest that decaying primordial black holes with masses of about 5 x 10^14 grams will be decaying right now, and their last gasp will be an explosion that produces something like 10^30 gamma ray photons with energies above 1 trillion electron volts. The luminosity would be about 10 times that of the Sun, and last for 0.1 second. The problem is that gamma ray bursts emit most of their radiation at energies below 50 billion electron volts and last anywhere from 0.001 second to 10,000 seconds, and a typical burst time of 10 seconds. These properties are unlike what are expected from decaying mini-black holes. This mechanism is usually included in lists of 'exotic' mechanisms for producing gamma ray bursts.
Copyright 1997 Dr. Sten Odenwald
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