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A New Model for the Thermal X-Ray Composites and the Proton Origin γ-Rays from Supernova Remnants

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Astrophysical Sources of High Energy Particles and Radiation

Part of the book series: NATO Science Series ((NAII,volume 44))

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Abstract

Recent nonthermal X-ray and 7-ray observations, attributed to electron emission processes, for the first time give an experimental confirmation that electrons are accelerated on SNR shocks up to the energy ~ 1014 eV. We have no direct observational confirmations about proton acceleration by SNR. Different models of γ-emission from SNRs predict different emission mechanisms as dominating. Only π° decays created in proton-nucleon interactions allow us to look inside the CR nuclear component acceleration processes. A new model for the thermal X-ray composites strongly suggest that thermal X-ray peak inside the radio shell of SNR tells us about entering of one part of SNR shock into a denser medium compared with other parts of the shell. This makes a TXCs promising sites for γ-ray generation via π° decays. Detailed consideration of SNR-cloud interaction allows to increase an expected proton induced γ-ray flux from SNR at least on an order of magnitude, that allows to adjust the theoretical π° decay γ-luminosities with observed fluxes at least for a few SNRs even for low density (no ~ 101 -4- 102 cm-3) cloud.

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Author information

Authors and Affiliations

  1. Institute for Applied Problems in Mechanics and Mathematics, 3-b Naukova St., 79053, Lviv, Ukraine

    O. Petruk

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  1. O. Petruk
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Editors and Affiliations

  1. Department of Physics and Astronomy, University of Maryland, College Park, MD, USA

    Maurice M. Shapiro

  2. Bartol Research Institute, University of Delaware, Newark, DE, USA

    Todor Stanev

  3. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA, USA

    John P. Wefel

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© 2001 Springer Science+Business Media Dordrecht

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Petruk, O. (2001). A New Model for the Thermal X-Ray Composites and the Proton Origin γ-Rays from Supernova Remnants. In: Shapiro, M.M., Stanev, T., Wefel, J.P. (eds) Astrophysical Sources of High Energy Particles and Radiation. NATO Science Series, vol 44. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0560-9_8

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  • DOI: https://doi.org/10.1007/978-94-010-0560-9_8

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-1-4020-0174-1

  • Online ISBN: 978-94-010-0560-9

  • eBook Packages: Springer Book Archive

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