Ev. Derishev et al., Cosmological gamma-ray bursts from induced collapse of a neutron star triggered by a primordial black hole, ASTROPHYS L, 39(1-6), 1999, pp. 757-760
We outline a detailed analysis of a novel scenario, in which gamma-ray burs
ts are of intergalactic origin and arise from iuduced collapse of a lone ne
utron star triggered by a primordial black hole captured in its center. The
energy released from the phase transition of accreted nucleon matter into
the quark-gluon plasma is transferred by degenerate neutrinos to the star's
surface, where neutrinos annihilate into an electron-positron plasma and p
roduce an inverse temperature layer that preserves a fireball from undue ba
ryonic pollution. Possible observational tests include absence of apparent
cosmological time dilation, primary location of gamma-ray bursts outside of
galaxies, specific shape of logN-logS dependence with a peak at redshift z
similar to 10, emission of 10(-4) - 10(-3) of total energy ill the form of
100 GeV photons, bimodal distribution of durations, very weak accompanying
pulse of gravitational radiation, etc.