Abstract

Different physical processes that affect an X-ray jet’s thermal balance are considered. We focus on the problem of a possible fast jet cooling due ro bremsstrahlung. Therefore, the contributions of each process to the jet thermal balance are calculated. We investigate the effect of shock wave propagation on jet heating and the mechanism of jet kinetic energy transformation into heat via Coulomb collisions of jet and corona protons. Quantitative estimates are made for the case of the galactic microquasar SS433 based on the authors’ previous results. Coulomb collisions have turned out to be the only important heating mechanism for this source.

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