Cosmological gamma-ray bursts from induced collapse of a neutron star triggered by a primordial black hole

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.