Broadband X-ray spectrum of GRS 1734-292, a luminous Seyfert 1 galaxy   behind the Galactic Center
  Based on a deep survey of the Galactic Center region performed with the INTEGRAL observatory, we measured for the first time the hard X-ray (20-200 keV) spectrum of the Seyfert 1 galaxy GRS 1734-292 located in the direction of the Galactic Center. We extended the spectrum to lower energies using archival GRANAT and ASCA observations. The broadband X-ray spectrum is similar to those of other nearby luminous AGNs, having a power law shape without cutoff up to at least 100 keV. 
S. Sazonov, M. Revnivtsev, A. Lutovinov, R. Sunyaev, S. Grebenev