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Origin of Thermal and Non-Thermal Hard X-Ray Emissionfrom the Galactic Center
Institute of Space and Astronautical Science, Japan ; P.N. Lebedev Institute, Russia.
P.N. Lebedev Institute, Russia ; Moscow Institute of Physics and Technology, Russia.
The University of Tokyo, Japan.
Moscow Institute of Physics and Technology, Russia ; Universit ́ e Pierre et Marie Curie, France.ORCID iD: 0000-0001-6511-4330
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2009 (English)In: Publications of the Astronomical Society of Japan, ISSN 0004-6264, Vol. 61, no 5, 1099-1105 p.Article in journal (Refereed) Published
Abstract [en]

We analyse new results of Chandra and Suzaku Observatories which found a flux of hard X-ray emission from the compact region around Sgr A∗ (r ∼ 100 pc). We suppose that this emission is generated by accretion processes onto the central supermassive blackhole when an unbound part of captured stars obtains an additional momentum. As a result a flux of subrelativistic protons is generated near the galactic center which heats the background plasma up to temperatures about 6–10 keV and produces by inverse bremsstrahlung a flux of non-thermal X-ray emission in the energy range above 10 keV.

Place, publisher, year, edition, pages
Oxford University Press, 2009. Vol. 61, no 5, 1099-1105 p.
Keyword [en]
Galaxy: center, ISM: cosmic rays, X-rays: diffuse background
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Physics, Astroparticle Physics
Identifiers
URN: urn:nbn:se:lnu:diva-42868DOI: 10.1093/pasj/61.5.1099OAI: oai:DiVA.org:lnu-42868DiVA: diva2:807549
Available from: 2015-04-23 Created: 2015-04-23 Last updated: 2016-02-26Bibliographically approved

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Prokhorov, Dmitry
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Citation style
  • apa
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  • Other locale
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Output format
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