Strong QPOs and High Energy Tail in Simultaneous RXTE/INTEGRAL Observations of GRS 1915+105
J. Rodriguez, Y. Fuchs, D. C. Hannikainen, O. Vilhu, S. E. Shaw, T. Belloni, S. Corbel
Abstract
We present the first results of the timing analysis of our RXTE/INTEGRAL monitoring campaign on GRS 1915+105. Over the 6 already performed RXTE observations, we study the presence of Low Frequency QPO (LFQPO), and their energetic dependences. In a view to understand the QPO phenomenon, we compare the QPO properties to the spectral behaviour of the source. We propose that part of the compact jet detected during multi-wavelength observations, could produce a significant amount of hard X-rays, and hence explain the energy dependence of the amplitude of the QPOs.
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