[en] Some OB stars show variable non-thermal radio emission. The non-thermal emission is due to synchrotron radiation that is emitted by electrons accelerated to high energies. The electron acceleration occurs at strong shocks created by the collision of radiatively-driven stellar winds in binary systems. Here we present results of our modelling of two colliding wind systems: Cyg OB2 No. 8A and Cyg OB2 No. 9.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Volpi, Delia; Royal Observatory of Belgium, Ringlaan 3, B-1180 Brussels, Belgium,
Blomme, Ronny; Royal Observatory of Belgium, Ringlaan 3, B-1180 Brussels, Belgium,
De Becker, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Rauw, Grégor ; Institut d'Astrophysique, Université de Liège, Allée du 6 Août, 17, Bât B5c, B-4000 Liège (Sart-Tilman), Belgium
Language :
English
Title :
Non-thermal radio emission from colliding-wind binaries: modelling Cyg OB2 No. 8A and No. 9
Publication date :
01 July 2011
Event name :
Active OB stars: structure, evolution, mass loss, and critical limit
Event date :
July 2010
Audience :
International
Journal title :
Proceedings of the International Astronomical Union
ISSN :
1743-9213
eISSN :
1743-9221
Publisher :
Cambridge University Press, Cambridge, United Kingdom
