352 citations · 5.8k across the 159 of their papers we have counts for
4 papers · 1 filter
Reflection in Seyfert Galaxies and the Unified Model of AGN
Claudio Ricci, Roland Walter, Thierry J. -L. Courvoisier +1
We present a deep study of the average hard X-ray spectra of Seyfert galaxies. We analyzed all public INTEGRAL IBIS/ISGRI data available on all the 165 Seyfert galaxies detected at…
INTEGRAL and the Unified Model of AGN
C. Ricci, R. Walter, T. J. -L. Courvoisier
According to the unified model, the differences observed in different classes of AGN are due to anisotropic obscuration. This implies that in the hard X-rays, at energies where the…
Extreme flux states of NGC 4151 observed with INTEGRAL
P. Lubinski, A. A. Zdziarski, R. Walter +5
We present a comprehensive spectral analysis of all INTEGRAL data obtained so far for the X-ray--bright Seyfert galaxy NGC 4151. We also use all contemporaneous data from RXTE, XMM…
INTEGRAL hard X-ray spectra of the cosmic X-ray background and Galactic ridge emission
M. Turler, M. Chernyakova, T. J. -L. Courvoisier +4
We derive the spectra of the cosmic X-ray background (CXB) and of the Galactic ridge X-ray emission (GRXE) in the ~20-200 keV range from the data of the IBIS instrument aboard the…