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  • 1
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    Beamed emission from gamma-ray burst sources (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: Gamma-ray bursts are intense fluxes of radiation in the 100 keV to several MeV energy range which typically persist for between a fraction of a second to several seconds. The observed spectral shape of these bursts suggest that the radiation is emitted as highly collimated beams emanating from neutron stars. This inference is based on the lack of significant gamma-gamma absorption (which are produced when gamma rays interact with stellar surfaces). The gamma-ray beams may be a consequence of a particle acceleration in double layers in neutron star magnetospheres.
    Keywords: SPACE RADIATION
    Type: NASA. Marshall Space Flight Center Double Layers in Astrophysics; p 305
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    High-energy thermal synchrotron emission (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: It is shown how the thermal synchrotron emission spectrum is modified when the photon energy is greater than the mean energy of the radiating particles. The effect if applying this energy conservation constraint is to produce spectra which have less high-energy photon emission than had been previously estimated. The thermal synchrotron spectra provide satisfactory fits to recently observed very high energy gamma ray spectra of certain burst sources.
    Keywords: SPACE RADIATION
    Type: Astrophysical Journal, Part 1 (ISSN 0004-637X); 296; 65-68
    Format: text
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    NASA TECHNICAL REPORTS
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