EPJ Web of Conferences 168, 04002 (2018)
https://doi.org/10.1051/epjconf/201816804002

The first ICRANet catalog of binary-driven hypernovae

¹ Dipartimento di Fisica, Sapienza Università di Roma and ICRA, Piazzale Aldo Moro 5, I-00185 Roma, Italy
² International Center for Relativistic Astrophysics Network (ICRANet), 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, Department 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

Published online: 9 January 2018

Abstract

In a series of recent publications, scientists from ICRANet, led by professor Remo Ruffini, have reached a novel comprehensive picture of gamma-ray bursts (GRBs) thanks to their development of a series of new theoretical approaches. Among those, the induced gravitational collapse (IGC) paradigm explains a class of energetic, long-duration GRBs associated with Ib/c supernovae (SN), recently named binary-driven hypernovae (BdHNe).

BdHNe have a well defined set of observational features which allow to identify them. Among them, the main two are: 1) long duration of the GRB explosion, namely larger than 2 s in the rest frame; 2) a total energy, released in all directions by the GRB explosion, larger than 10⁵² ergs.

A striking result is the observation, in the BdHNe sources, of a universal late time power-law decay in the X-rays luminosity after 10⁴ s, with typical decaying slope of ~ 1.5. This leads to the possible establishment of a new distance indicator having redshift up to z ~ 8.

Thanks to this novel theoretical and observational understanding, it was possible for ICRANet scientists to build the firstst BdHNe catalog, composed by the 345 BdHNe identified up to the end of 2016.