Multi-Wavelength Monitoring of GRS 1915+105

Bandyopadhyay, R., Martini, P., Gerard, E., Charles, P.A., Wagner, R.M., Shrader, C., Shahbaz, T., Mirabel, I.F. 1998, MNRAS, 295, 623


Since its discovery in 1992, the superluminal X-ray transient GRS1915+105 has been extensively observed in an attempt to understand its behaviour. We present here first results from a multi-wavelength campaign undertaken from July to September 1996. This study includes X-ray data from the RXTE All Sky Monitor and BATSE, two-frequency data from the Nancay radio telescope, and infrared photometry from the 1.8m Perkins telescope at Lowell Observatory. The first long-term well-sampled IR light curve of GRS 1915+105 is presented herein and is consistent with the interpretation of this source as a long-period binary. We compare the various light curves, searching for correlations in the behaviour of the source at differing wavelengths and for possible periodicities.




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