Photospheric emission in gamma-ray bursts

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dc.contributor.author Pe'er, Asaf
dc.contributor.author Ryde, Felix
dc.date.accessioned 2019-01-25T12:54:47Z
dc.date.available 2019-01-25T12:54:47Z
dc.date.issued 2015-07
dc.identifier.citation Pe'er, A. and Ryde, F. (2015) 'Photospheric emission in gamma-ray bursts', Proceedings of the Fourteenth Marcel Grossmann Meeting on General Relativity, Rome, Italy, 12-18 July. Available at: https://doi.org/10.1142/10614 (Accessed 25 January 2019) en
dc.identifier.startpage 806 en
dc.identifier.endpage 840 en
dc.identifier.isbn 978-981-3226-59-3
dc.identifier.uri http://hdl.handle.net/10468/7362
dc.description.abstract A major breakthrough in our understanding of gamma-ray bursts (GRB) prompt emission physics occurred in the last few years, with the realization that a thermal component accompanies the over-all nonthermal prompt spectra. This thermal part is important by itself, as it provides direct probe of the physics in the innermost outflow regions. It further has an indirect importance, as a source of seed photons for inverse-Compton scattering, thereby it contributes to the nonthermal part as well. In this short review, we highlight some key recent developments. Observationally, although so far it was clearly identified only in a minority of bursts, there is indirect evidence that a thermal component exists in a very large fraction of GRBs, possibly close to 100%. Theoretically, the existence of a thermal component has a large number of implications as a probe of underlying GRB physics. Some surprising implications include its use as a probe of the jet dynamics, geometry and magnetization. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher World Scientific en
dc.relation.ispartof Fourteenth Marcel Grossmann Meeting on General Relativity
dc.relation.uri https://doi.org/10.1142/10614
dc.rights © 2015, the Authors. This paper is distributed under the terms of the Creative Commons Attribution 4.0 (CC BY) License. Further distribution of this work is permitted, provided the original work is properly cited. en
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Gamma-rays bursts en
dc.subject Hydrodynamics en
dc.subject Radiation mechanism en
dc.subject Nonthermal en
dc.subject Radiation mechanism en
dc.subject Thermal en
dc.title Photospheric emission in gamma-ray bursts en
dc.type Conference item en
dc.internal.authorcontactother Asaf Pe'Er, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: a.peer@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2019-01-25T12:17:42Z
dc.description.version Published Version en
dc.internal.rssid 471102091
dc.contributor.funder Seventh Framework Programme en
dc.description.status Peer reviewed en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.conferencelocation Rome, Italy en
dc.internal.IRISemailaddress a.peer@ucc.ie en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/618499/EU/Transient-Sky/TRANSIENT-SKY en


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© 2015, the Authors. This paper is distributed under the terms of the Creative Commons Attribution 4.0 (CC BY) License. Further distribution of this work is permitted, provided the original work is properly cited. Except where otherwise noted, this item's license is described as © 2015, the Authors. This paper is distributed under the terms of the Creative Commons Attribution 4.0 (CC BY) License. Further distribution of this work is permitted, provided the original work is properly cited.
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