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XMM-Newton Observation of the Black Hole Microquasar GRS 1758-258

A. Goldwurm·D. Israel·P. Goldoni·P. Ferrando·A. Decourchelle·I. F. Mirabel·R. S. Warwick
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Abstract

The XMM-Newton X-ray observatory pointed the galactic black hole candidate and microquasar GRS 1758-258 in September 2000 for about 10 ks during a program devoted to the scan of the Galactic Center regions. Preliminary results from EPIC MOS camera data are presented here. The data indicate that the source underwent a state transition from its standard low-hard state to an intermediate state. For the first time in this source the ultra-soft component of the accretion disk, which black hole binaries display in intermediate or high-soft states, was clearly detected and measured thanks to the high spectral capabilities of XMM-Newton.

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A. Goldwurm, D. Israel, P. Goldoni, P. Ferrando, A. Decourchelle, I. F. Mirabel, R. S. Warwick. 2001-06-18. XMM-Newton Observation of the Black Hole Microquasar GRS 1758-258. https://doi.org/10.1063/1.1419372

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