Integral/Rxte observations of GRS 1915+105
  We report here the first results of the spectral and timing analysis of our simultaneous INTEGRAL/RXTE observations of GRS 1915+105. The first observation ever performed with INTEGRAL revealed a new class of variability, where changes of luminosity seem driven by changes in the Comptonising medium. The spectro-temporal study of our data taken later, in the steady state, could show the influence of the compact jet in the hard X-rays. 
J. Rodriguez, D.C. Hannikainen, S.E. Shaw, C. Cabanac, Y. Fuchs