BIANCO , Carlo L.

Recently we proposed the existence of two families of short GRBs, both originating from neutron star mergers: family-1 short bursts with Eiso < 1052 erg and rest-frame spectral peak energy Epeak < 2 MeV, leading to a massive neutron star as the merged core; family-2 short bursts with Eiso > 1052 erg and Epeak > 2 MeV, leading to a black hole as...

For short gamma-ray bursts (GRBs), double neutron star (NS) mergers are traditionally adopted as progenitors. We propose a classification of short bursts into two sub-classes: short gamma-ray flashes (S-GRFs) with isotropic energy Eiso ≲ 1052 erg and rest-frame spectral peak energy Ep,i ≲ 2 MeV, when the merger leads to a very massive NS (MNS),...