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Gamma-Rays from Kilonovae and the Cosmic Gamma-Ray Background

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 20 Mar 2020Embargo end date: 01 Jan 2019Publisher:American Astronomical SocietyJournal:The Astrophysical Journal, volume 892, page 45 (issn: 0004-637X, eissn: 1538-4357,

Authors: Pilar Ruiz-Lapuente; Oleg Korobkin; Oleg Korobkin;

doi: 10.3847/1538-4357/ab744e , 10.48550/arxiv.1912.11974

arXiv: http://arxiv.org/abs/1912.11974

handle: 10261/222479

Gamma-Rays from Kilonovae and the Cosmic Gamma-Ray Background

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Abstract

Abstract The recent detection of the gravitational-wave event GW170817, produced by the coalescence of two neutron stars, and of its optical–infrared counterpart, powered by the radioactive decay of r-process elements, has opened a new window onto gamma-ray astronomy: the direct detection of photons coming from such decays. Here, we calculate the contribution of kilonovae to the diffuse gamma-ray background in the MeV range, using recent results on the spectra of the gamma-rays emitted in individual events, and we compare it with that from other sources. We find that the contribution from kilonovae is not dominant in such an energy range, but within current uncertainties, and its addition to other sources might help to fit the observational data.

Related Organizations

University of Barcelona
Spain
Spanish National Research Council
Spain
Los Alamos National Laboratory
United States
Institut de Ciències del Cosmos
Spain
Joint Institute for Nuclear Astrophysics
United States

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Keywords

High Energy Astrophysical Phenomena (astro-ph.HE), Gamma-ray astronomy, Gamma ray astronomy, FOS: Physical sciences, R-process, Astrophysics - High Energy Astrophysical Phenomena, Nucleosynthesis, Gamma-ray transient sources

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	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%