Non-thermal processes in colliding-wind massive binaries: the contribution of Simbol-X to a multiwavelength investigation

Details Non-thermal processes in colliding-wind massive binaries: the contribution of Simbol-X to a multiwavelength investigation Non-thermal processes in colliding-wind massive binaries: the contribution of Simbol-X to a multiwavelength investigation

2009-03-10

arxiv.org/abs/0903.1824v1

AIP Conf.Proc.1126:347-350,2009

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 2 figures, to appear in Proc. of the Second Internqtionql Simbol-X Symposium, held in Paris (France)

Scientific paper

10.1063/1.3149450

Several colliding-wind massive binaries are known to be non-thermal emitters in the radio domain. This constitutes strong evidence for the fact that an efficient particle acceleration process is at work in these objects. The acceleration mechanism is most probably the Diffusive Shock Acceleration (DSA) process in the presence of strong hydrodynamic shocks due to the colliding-winds. In order to investigate the physics of this particle acceleration, we initiated a multiwavelength campaign covering a large part of the electromagnetic spectrum. In this context, the detailed study of the hard X-ray emission from these sources in the SIMBOL-X bandpass constitutes a crucial element in order to probe this still poorly known topic of astrophysics. It should be noted that colliding-wind massive binaries should be considered as very valuable targets for the investigation of particle acceleration in a similar way as supernova remnants, but in a different region of the parameter space.

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