The 590 days long term periodicity of the microquasar GRS 1915+105
A. Rau, J. Greiner, M. L. McCollough
Abstract
We report on the discovery of a 590 days long term periodicity in the hard X-ray component of the microquasar found from a comprehensive study of more than four years of RXTE observations. The periodicity is also observed in the hard X-ray flux observed by BATSE, and in the radio flux as seen with the Green Bank Interferometer and the Ryle Telescope. We discuss various possible explanations, including the precession of a radiation induced warped accretion disk.
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