Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-02-11
AIP Conf.Proc.1126:141-144,2009
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
4 pages, 1 figure, to appear in the proceedings of the second Simbol-X Symposium "Simbol-X - Focusing on the Hard X-ray Univer
Scientific paper
10.1063/1.3149396
AGN exhibit complex hard X-ray spectra. Our current understanding is that the emission is dominated by inverse Compton processes which take place in the corona above the accretion disk, and that absorption and reflection in a distant absorber play a major role. These processes can be directly observed through the shape of the continuum, the Compton reflection hump around 30 keV, and the iron fluorescence line at 6.4 keV. We demonstrate the capabilities of Simbol-X to constrain complex models for cases like MCG-05-23-016, NGC 4151, NGC 2110, and NGC 4051 in short (10 ksec) observations. We compare the simulations with recent observations on these sources by INTEGRAL, Swift and Suzaku. Constraining reflection models for AGN with Simbol-X will help us to get a clear view of the processes and geometry near to the central engine in AGN, and will give insight to which sources are responsible for the Cosmic X-ray background at energies above 20 keV.
Beckmann Volker
Courvoisier Thierry J. -L.
Gehrels Neil
Lubinski Piotr
Malzac Julien
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