Cosmic-ray energetics in the supernova remnant Cassiopeia A |
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| Authors: | K S Stankevich V P Ivanov |
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| Institution: | (1) Radiophysical Research Institute, Nizhni Novgorod State University, ul. Lyadova 25/14, GSP-51, Nizhni Novgorod, 603600, Russia |
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| Abstract: | Based on the observed radio spectrum for the supernova remnant Cassiopeia A, we have established that it represents synchrotron radiation of relativistic electrons with a nonpower-law energy spectrum in the form of Kaplan-Tsytovich’s standard distribution. The total density of relativistic electrons is 10?3 cm?3, only 20% of which form the radio spectrum. The particle number ratio of the proton-nuclear and electron cosmicray components inside the shell differs significantly from the mean Galactic ratio (100) and probably does not exceed unity. |
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| Keywords: | cosmic rays nonthermal emission supernovae and supernova remnants |
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