OMC-INTEGRAL: Optical Observations of X-Ray Sources

Details OMC-INTEGRAL: Optical Observations of X-Ray Sources OMC-INTEGRAL: Optical Observations of X-Ray Sources

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.552..875c&link_type=abstract

Proceedings of the 5th INTEGRAL Workshop on the INTEGRAL Universe (ESA SP-552). 16-20 February 2004, Munich, Germany. Scientific

Physics

1

Scientific paper

After one year of INTEGRAL in operation, its Optical Monitor, the OMC, has measured a significant number of sources that also emit at high energies. For example, a list of 34 sources identified by JEM-X had already accumulated by January 2004 more than 50 photometric points in the optical database. The correlation between the optical and X-ray emission is currently being analyzed and will be presented in the near future. In this paper we present the results already obtained for Cygnus X-1, which required a specific analysis to remove the light contamina- tion by a nearby star. In addition, we also present the optical lightcurves of 5 sources extracted from the ROSAT catalogue, previously not known to be variable. The identification of these optical counterparts should nevertheless be confirmed. Key words: optical photometry; variable stars; X-ray.

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