4 citations · 6 across the 7 of their papers we have counts for
5 papers · 2 filters
Testing the AGN models for the X-ray background
R. Gilli
We will briefly examine the following three issues related to the AGN synthesis models for X-ray background: 1) the possibility that absorbed AGNs evolve faster than unabsorbed one…
Sub-mm and X-ray background: two unrelated phenomena?
P. Severgnini, R. Maiolino, M. Salvati +9
Obscured AGNs are thought to contribute a large fraction of the hard X-ray background (2-10 keV), and have also been proposed as the powerhouse of a fraction of the SCUBA sources w…
The hard X-ray emission of luminous infrared galaxies
G. Risaliti, R. Gilli, R. Maiolino +1
We present a study of the hard X-ray properties of a sample that includes all the Luminous Infrared Galaxies (LIGs, L_IR > 10^11 L_sun) observed in the 2-10 keV energy band (new an…
Optically dim counterparts of hard X-ray selected AGNs
R. Maiolino, M. Salvati, L. A. Antonelli +9
We present near-IR photometry and imaging observations of a small sample of sources identified in the BeppoSAX 5-10 keV survey (HELLAS) which resolves ~ 20-30% of the X-ray backgro…
The variability of the Seyfert galaxy NGC 2992: the case for a revived AGN
R. Gilli, R. Maiolino, A. Marconi +4
We report the transition to an active state of the nucleus in the Seyfert 1.9 galaxy NGC 2992, discovered by means of new hard X-ray data. While the 2-10 keV flux declined by a fac…