What can we learn from GRBs?
Dip. di Fisica, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Rome, Italy
2 ICRANet-Pescara, Piazza della Repubblica 10, I-65122 Pescara, Italy
3 Université de Nice Sophia-Antipolis, Grand Château Parc Valrose, Nice, CEDEX 2, France
4 ICRANet-Rio, Centro Brasileiro de Pesquisas Fisicas, Rua Dr. Xavier Sigaud 150, Rio de Janeiro, RJ, 22290-180, Brazil
5 University of Siena, Dept. of Physical Sciences, Earth and Environment, Via Roma 56, I-53100 Siena, Italy
6 ASI Science Data Center, via del Politecnico s.n.c., I-00133 Rome Italy
7 Department of Physics, Isfahan University of Technology, 84156-83111, Iran
* e-mail: email@example.com
Published online: 9 January 2018
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.
© The Authors, published by EDP Sciences, 2018
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