期刊
ASTRONOMY & ASTROPHYSICS
卷 462, 期 1, 页码 173-177出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20065725
关键词
acceleration of particles; cosmic rays; radiation mechanisms : non-thermal; ISM : supernova remnants
Aims. We study the acceleration and radiation of charged particles in the shock waves of supernova remnants using a recent version of the box model. According to this, particles are accelerated in an energy-dependent region around the shock by the first order Fermi mechanism and lose energy through radiation. Methods. The particle distribution function is obtained from a spatially averaged kinetic equation that treats the energy losses self-consistently. There exists also a second population that consists of those particles that escape behind the shock where they also radiate. The energy distribution of this population is calculated in a similar manner. Results. The application of the model to the supernova remnant RX J1713.7-3946, which was recently confirmed as a TeV source by HESS, shows that the X-ray emission can be attributed to electron synchrotron radiation while in x-rays there are contributions from both electrons and protons, with protons playing the dominant role. Additionally, there are strong indications that particles diffuse in turbulence that has a Kolmogorov spectrum.
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