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INTEGRAL Observations of GRS 1758–258

Published online by Cambridge University Press:  12 May 2006

Marion Cadolle Bel ,
Andrea Goldwurm  and
Patrick Sizun
Marion Cadolle Bel
Affiliation:
APC, UMR 7164, 11 place M. Berthelot, 75231 Paris, France Service d'Astrophysique, CEA-Saclay, Orme des Merisiers, 91191, Gif-Sur-Yvette, France emails: mcadolle@cea.fr, goldwurm@cea.fr, sizun@cea.fr
Andrea Goldwurm
Affiliation:
APC, UMR 7164, 11 place M. Berthelot, 75231 Paris, France Service d'Astrophysique, CEA-Saclay, Orme des Merisiers, 91191, Gif-Sur-Yvette, France emails: mcadolle@cea.fr, goldwurm@cea.fr, sizun@cea.fr
Patrick Sizun
Affiliation:
Service d'Astrophysique, CEA-Saclay, Orme des Merisiers, 91191, Gif-Sur-Yvette, France emails: mcadolle@cea.fr, goldwurm@cea.fr, sizun@cea.fr
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Abstract

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Since its launch in October 2002, the INTEGRAL satellite has observed the X-ray binary and black hole (BH) candidate GRS 1758–258, for more than 2 Ms. Between 2003 and 2004 INTEGRAL could follow its spectral and temporal behaviour: while it was weak and soft in spring 2003 it was detected up to 150 keV at the end of 2003 August, in a hard state similar to the one observed between 1990 and 1997 by previous high energy missions.

Keywords

Black hole physics – Stars: individual: GRS 1758–258 – Gamma rays: observations – X-rays: binaries – X-rays: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S230: Populations of High Energy Sources in Galaxies , August 2005 , pp. 93 - 94
Copyright
2006 International Astronomical Union