Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sf2a.conf...77b&link_type=abstract
SF2A-2007: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics held in Grenoble, France, July
Astronomy and Astrophysics
Astrophysics
Scientific paper
Particles in extreme objects such as X-ray binaries, AGN, or γ-ray bursters have often energies so high that they cannot be thermalized in the too rare particle-particle collisions by Coulomb interactions. They form high energy plasmas whose properties are not well understood yet. Not only are these plasmas responsible of the hard X- and γ-ray emission we observe but also they have a strong influence on the main dynamics and energetics of the astrophysical objects themselves. We present a new kinetic code that solves the evolution equations for the distributions of particles and photons interacting by radiation processes such as self-absorbed synchrotron and Compton radiations. The code produces spectra that can be compared with observations X to constrain the radiation and acceleration processes in these objects. A first application is also presented that illustrates the thermalization of hot plasmas by self-absorbed synchrotron emission.
Belmont Renaud
Malzac Julien
Marcowith Alexandre
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