Induced gravitational collapse, binary-driven hypernovae, long gramma-ray bursts and their connection with short gamma-ray bursts.
Rueda J. A. , Ruffini R., Wang Y.
III - Astrofisica
GSSI Ex ISEF - Aula D - Venerdì 27 h 15:30 - 19:00
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GRBs originate in subclasses with specific energetics, spectra, duration, and binary progenitors. We discuss the binary-driven hypernova (BdHN) model for long GRBs. The progenitor is a carbon-oxygen core (COcore)-neutron star (NS) binary. The COcore explodes as supernova (SN) accreting onto the NS which becomes a more massive BH or, if it reaches the critical mass, forms a BH. We show the results on BdHNe up to recent 3D-SPH-simulations, including its explanation of the X-ray precursors, the ultrarelativistic gamma-ray (MeV) prompt emission, the GeV-TeV emission, the mildly relativistic X-ray flares in the early afterglow, and the X-ray late afterglow and its power-law regime.