Coordinated INTEGRAL and optical observations of SS433
Abstract
Results of simultaneous {\it INTEGRAL} and optical observations of galactic microquasar SS433 in May 2003 are presented. The analysis of the X-ray and optical eclipse duration and hard X-ray spectra obtained by {\it INTEGRAL} together with optical spectroscopy obtained on the 6-m telescope allows us to construct a model of SS433 as a massive X-ray binary. X-ray eclipse in hard X-rays has a depth of and extended wings. The optical spectroscopy allows us to identify the optical companion as a A5-A7 supergiant and to measure its radial velocity semi-amplitude km/s. A strong heating effect in the optical star atmosphere is discovered spectroscopically. The observed broadband X-ray spectrum 2-100 keV can be described by emission from optically thin thermal plasma with
Cite
@article{arxiv.astro-ph/0404479,
title = {Coordinated INTEGRAL and optical observations of SS433},
author = {A. M. Cherepashchuk and R. A. Sunyaev and S. N. Fabrika and S. V. Molkov and E. A. Barsukova and E. A. Antokhina and T. R. Irsmambetova and I. E. Panchenko and K. A. Postnov and E. V. Seifina and N. I. Shakura and A. N. Timokhin and I. F. Bikmaev and N. A. Sakhibullin and Yu. N. Gnedin and A. A. Arkharov and V. M. Larionov},
journal= {arXiv preprint arXiv:astro-ph/0404479},
year = {2007}
}
Comments
8 pages, 11 figures, Proceedings of the V INTEGRAL Workshop, Munich 16-20 February 2004. ESA SP-552