Physics – Space Physics
Scientific paper
Apr 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006yosc.conf...59b&link_type=abstract
13-th Open Young Scientists Conference on Astronomy and Space Physics, p. 59
Physics
Space Physics
Snr, Thermal Emission, Nonthermal X-Rays, Nonuniform Ism
Scientific paper
A number of theoretical results suggest that the shape of the high-energy end of the spectrum of electrons accelerated by the shocks in supernova remnants (SNR) have to be close to the exponential one: N(E) propto exp(-(E/Emax)^a) with a approx 1. However, a fit of the observational data from SNR G347.3-0.5 requires a broadening of the electron spectrum, i.e. the value of a approx 0.5. In our report we investigate the possibility for such broadening to be a result of the shock evolution in the nonuniform interstellar medium. We check as well the possible influence of the interstellar magnetic field and the shock obliquity on such broadening. Our conclusion is that none of these possibilities is able to be responsible for the value of a<1. Thus, the broadening of the the high-energy end of the spectrum should be an internal property of the processes of acceleration and/or energy losses of electrons in vicinity of the shock.
Beshley V.
Petruk O.
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