EPJ Web of Conferences (Jan 2018)

What can we learn from GRBs?

  • Muccino Marco,
  • Ruffini Remo,
  • Aimuratov Yerlan,
  • Becerra Laura M.,
  • Bianco Carlo L.,
  • Karlica Mile,
  • Kovacevic Milos,
  • Melon Fuksman Julio D.,
  • Moradi Rahim,
  • Penacchioni Ana V.,
  • Pisani Giovanni B.,
  • Primorac Daria,
  • Rueda Jorge A.,
  • Shakeri Soroush,
  • Vereshchagin Gregory V.,
  • Xue She-Sheng,
  • Wang Yu

DOI
https://doi.org/10.1051/epjconf/201816801015
Journal volume & issue
Vol. 168
p. 01015

Abstract

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We review our recent results on the classification of long and short gamma-ray bursts (GRBs) in different subclasses. We provide observational evidences for the binary nature of GRB progenitors. For long bursts the induced gravitational collapse (IGC) paradigm proposes as progenitor a tight binary system composed of a carbon-oxygen core (COcore) and a neutron star (NS) companion; the supernova (SN) explosion of the COcore triggers a hypercritical accretion process onto the companion NS. For short bursts a NS–NS merger is traditionally adopted as the progenitor. We also indicate additional sub-classes originating from different progenitors: (COcore)–black hole (BH), BH–NS, and white dwarf–NS binaries. We also show how the outcomes of the further evolution of some of these sub-classes may become the progenitor systems of other sub-classes.