Poster (Scientific congresses and symposiums)
Particle acceleration in colliding-wind massive binaries: a relevant science case for ASTRO-H
De Becker, Michaël; Khangulyan, Dmitry; Bosch-Ramon, Valenti
2012European Week of Astronomy and Space Sciences 2012 - ASTRO-H Special Session
 

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Keywords :
Massive binaries; Particle acceleration; Non-thermal processe; X-rays; Gamma-rays
Abstract :
[en] The strong stellar winds of massive stars in binary systems interact through shocks responsible for several phenomena, including significant particle acceleration up to relativistic energies. The existence of this relativistic particle population is mainly revealed through detection of bright synchrotron radio emission in the case of a few tens of systems. More recently, Suzaku observations revealed the existence of non-thermal X-rays in the case of two colliding-wind binaries (CWBs), confirming the prediction that inverse Compton scattering should be at work in these objects. In this context, the ASTRO-H mission constitutes the ideal tool to investigate non-thermal phenomena in hard X-rays (above 10 keV), where the well-known thermal emission from the shocked winds should not be significantly present. This poster gives an overview of this science case, and provides clues for the expected input of ASTRO-H in the study of these objects.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
De Becker, Michaël  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Khangulyan, Dmitry
Bosch-Ramon, Valenti
Language :
English
Title :
Particle acceleration in colliding-wind massive binaries: a relevant science case for ASTRO-H
Publication date :
July 2012
Number of pages :
Poster
Event name :
European Week of Astronomy and Space Sciences 2012 - ASTRO-H Special Session
Event organizer :
Stéphane Paltani, Marc Audard
Event place :
Rome, Italy
Event date :
2-3 juillet 2012
Audience :
International
Available on ORBi :
since 10 February 2013

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