The mid IR -- hard X-ray correlation in AGN and its implications for dusty torus models (2007)
Horst, Hannes, Gandhi, Poshak, Smette, Alain, Duschl, Wolfgang J.
Context: We investigate mid-infrared and X-ray properties of the dusty torus invoked in the unification scenario for active galactic nuclei. Aims: We use the relation between mid IR and hard X-ray...
Haas, Martin, Siebenmorgen, Ralf, Pantin, Eric, Horst, Hannes, Smette, Alain, Kaufl, Hans-Ulrich, ...
Half of the Seyfert-2 galaxies escaped detection of broad lines in their polarised spectra observed so far. Some authors have suspected that these non-HBLRs contain real Sy2 nuclei without intrinsic...
The small dispersion of the mid IR -- hard X-ray correlation in AGN (2006)
Horst, Hannes, Smette, Alain, Gandhi, Poshak, Duschl, Wolfgang J.
Context: We investigate mid-infrared and X-ray properties of the dusty torus in unification scenarios for active galactic nuclei. Aims: We use the relation between mid IR and hard X-ray luminosities...
A simple model for quasar density evolution (2006)
Horst, Hannes, Duschl, Wolfgang J.
It is widely agreed upon that AGN and Quasars are driven by gas accretion onto a supermassive black hole. The origin of the latter however still remains an open question. In this work we present the...