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Gamma-ray emission of hot astrophysical plasma

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dc.contributor.authorKafexhiu, Ervin
dc.contributor.authorBarkov, Maxim
dc.contributor.authorAharonian, Felix
dc.date.accessioned2024-11-20T09:55:42Z
dc.date.available2024-11-20T09:55:42Z
dc.date.issued2019
dc.description.abstractVery hot plasmas with ion temperature exceeding 10(10) K can be formed in certain astrophysical environments. The distinct radiation signature of such plasmas is the gamma-ray emission dominated by the prompt deexcitation nuclear lines and pi(0)-decay gamma rays. Using a large nuclear reaction network, we compute the time evolution of the chemical composition of such hot plasmas and their gamma-ray line emissivity. At higher energies, we provide simple but accurate analytical presentations for the pi(0)-meson production rate and the corresponding pi(0)-> 2 gamma emissivity derived for the Maxwellian distribution of protons. We discuss the impact of the possible deviation of the high energy tail of the particle distribution function from the "nominal" Maxwellian distribution on the plasma gamma-ray emissivity.
dc.identifier.citationKafexhiu, Ervin Gamma-ray emission of hot astrophysical plasma / Kafexhiu, Ervin, Barkov, Maxim, Aharonian, Felix // Physical Review D. - 2019. - 99. - № 6. - 10.1103/PhysRevD.99.063007
dc.identifier.doi10.1103/PhysRevD.99.063007
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevD.99.063007
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85064042153&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000461059700002
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/16688
dc.relation.ispartofPhysical Review D
dc.titleGamma-ray emission of hot astrophysical plasma
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue6
oaire.citation.volume99
relation.isOrgUnitOfPublication06e1796d-4f55-4057-8d7e-bb2f3b5676f5
relation.isOrgUnitOfPublication.latestForDiscovery06e1796d-4f55-4057-8d7e-bb2f3b5676f5
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