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    Two-zone model for the broadband Crab nebula spectrum: microscopic interpretation

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    epjconf_ricap2017_02009.pdf
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    Author
    Fraschetti, F.
    Pohl, M.
    Affiliation
    Depts. of Planetary Sciences and Astronomy, University of Arizona
    Issue Date
    2017-03-23
    
    Metadata
    Show full item record
    Publisher
    EDP Sciences
    Citation
    Two-zone model for the broadband Crab nebula spectrum: microscopic interpretation 2017, 136:02009 EPJ Web of Conferences
    Journal
    EPJ Web of Conferences: RICAP16, 6th Roma International Conference on Astroparticle Physics
    Rights
    © The Authors, published by EDP Sciences, 2017.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We develop a simple two-zone interpretation of the broadband baseline Crab nebula spectrum between 10(-5) eV and similar to 100 TeV by using two distinct log-parabola energetic electrons distributions. We determine analytically the very-high energy photon spectrum as originated by inverse-Compton scattering of the far-infrared soft ambient photons within the nebula off a first population of electrons energized at the nebula termination shock. The broad and flat 200 GeV peak jointly observed by Fermi/LAT and MAGIC is naturally reproduced. The synchrotron radiation from a second energetic electron population explains the spectrum from the radio range up to similar to 10 keV. We infer from observations the energy dependence of the microscopic probability of remaining in proximity of the shock of the accelerating electrons.
    Note
    Published open access. No embargo.
    ISSN
    2100-014X
    DOI
    10.1051/epjconf/201713602009
    Version
    Final published version
    Sponsors
    NASA [NNX13AG10G, NNX15AJ71G]
    Additional Links
    http://www.epj-conferences.org/10.1051/epjconf/201713602009
    ae974a485f413a2113503eed53cd6c53
    10.1051/epjconf/201713602009
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