Abstract
view Abstract Citations (9) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Production of Astrophysical X-Rays by Transition Radiation Watson, William D. Abstract Results of detailed calculations are presented for the spectrum of transition radiation produced when relativistic charged particles traverse astrophysical dust grains. The "formation zone" for X-ray generation is greater than dimensions of typical astrophysical grains so that the efficiency of the process is appreciably reduced. When competing processes and upper limits to the galactic electron flux are considered, neither the low-energy ( k keV) nor the higher-energy ( 1-20 keV) X-rays associated with the galactic disk can be explained by transition radiation from grains. This conclusion is contrary to that of some other investigators. Transition radiation is comparable with other radiation processes in some models for the nuclei of active galaxies. Subject headings: cosmic rays - interstellar matter - X-rays Publication: The Astrophysical Journal Pub Date: May 1973 DOI: 10.1086/152114 Bibcode: 1973ApJ...182...17W full text sources ADS |
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