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Gamma-ray bursts: A brief survey of the diversity

Published online by Cambridge University Press:  30 December 2019

Attila Mészáros Open the ORCID record for Attila Mészáros [Opens in a new window]  and
Jakub Řípa Open the ORCID record for Jakub Řípa [Opens in a new window]
Attila Mészáros
Affiliation:
Astronomical Institute, Faculty of Mathematics and Physics, Charles University, CZ-180 00 Prague 8, V Holešovičkách 2, Czech Republic email: meszaros@cesnet.cz
Jakub Řípa
Affiliation:
Astronomical Institute, Faculty of Mathematics and Physics, Charles University, CZ-180 00 Prague 8, V Holešovičkách 2, Czech Republic email: meszaros@cesnet.cz MTA-Eötvös Lóránd University, Lendület Hot Universe Research Group, Pázmány Péter sétány 1/A, Budapest, 1117, Hungary Eötvös Lóránd University, Institute of Physics, Pázmány Péter sétány 1/A, Budapest, 1117, Hungary email: jripa@caesar.elte.hu
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Abstract

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The separation of the gamma-ray bursts (GRBs) into short/hard and long/soft subclasses, respectively, is well supported both theoretically and observationally. The long ones are coupled to supernovae type Ib/Ic - the short ones are connected to the merging of two neutron stars, where one or even both neutron stars can be substituted by black holes. These short GRBs - as merging binaries - can also serve as the sources of gravitation waves, and are observable as the recently detected macronovae. Since 1998 there are several statistical studies suggesting the existence of more than two subgroups. There can be a subgroup having an intermediate durations; there can be a subgroup with ultra-long durations; the long/soft subgroup itself can be divided into two subclasses with respect to the luminosity of GRBs. The authors with other collaborators provided several statistical studies in this topic. This field of the GRB-diversity is briefly surveyed in this contribution.

Keywords

cosmology: miscellaneouscosmology: observationsgamma rays: bursts
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S346: High-mass X-ray Binaries: Illuminating the Passage from Massive Binaries to Merging Compact Objects , August 2018 , pp. 383 - 387
Copyright
© International Astronomical Union 2019 

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