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: firstname.lastname@example.org
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).