出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The high energy emission of microquasars is thought to originate from high energy particles.
Depending on the spectral state, the distribution of these particles can be thermal with a high temperature
(typically 100 keV) or non-thermal and extending to even higher energy. The properties
of high energy plasmas are governed by a rich microphysics involving particle-particle collisions
and particles-photons interactions.
We present a new code developed to address the evolution of relativistic plasmas. This onezone
code focuses on the microphysics and solves the coupled kinetic equations for particles and
photons, including Compton scattering, synchrotron emission and absorption, pair production and
annihilation, bremsstrahlung emission and absorption, Coulomb interactions, and prescriptions
for additional particle acceleration and heating. It can in particular describe mechanisms such a
thermalisation by synchrotron self-absorption and Coulomb collisions.
Using the code, we investigate whether various acceleration processes, namely thermal heating,
non-thermal acceleration and stochastic acceleration, can reproduce the different spectral states
of microquasars. Premilinary results are presented.
