Comptonization in 1E1740.7−2942 spectra from 2 to 200 keV

Studies of the long-term spectral variations have been used to constrain the emission processes of black hole candidates. However, a common scenario which is able to explain the emission from soft to hard X-rays has been proposed only recently. Here, we use XMM and INTEGRAL data on 1E 1740.7−2942 in order to demonstrate that Comptonization plays an important role in producing high energy photons, as predicted by the current modeling scenario. An INTEGRAL view of the high-energy sky (the first 10 years) " 9th INTEGRAL Workshop and celebration of the 10th anniversary of the launch