Publication: Gamma-ray emission of hot astrophysical plasma
Дата
2019
Авторы
Kafexhiu, Ervin
Barkov, Maxim
Aharonian, Felix
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Аннотация
Very 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.
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Kafexhiu, 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
URI
https://www.doi.org/10.1103/PhysRevD.99.063007
https://www.scopus.com/record/display.uri?eid=2-s2.0-85064042153&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000461059700002
https://openrepository.mephi.ru/handle/123456789/16688
https://www.scopus.com/record/display.uri?eid=2-s2.0-85064042153&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000461059700002
https://openrepository.mephi.ru/handle/123456789/16688