Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-12-07
Astronomy and Astrophysics
Astrophysics
7 pages, 5 fugures, accepted for publication in Astronomy & Astrophysics
Scientific paper
We studied with BeppoSAX the infrared luminous galaxy IRAS 09104+4109 over a very wide X-ray band from 0.1 to 80 keV. Our observations indicate the dominance of a thermal component at energies below 8 keV, which we attribute to the free-free emission from the intracluster (IC) plasma surrounding the source. Above 10 keV we find evidence for the existence of flux in excess with respect to the free-free IC plasma emission. This, together with the marginal detection of a neutral iron line at $\sim 6.4$ keV, gives a strong indication for the presence of an AGN deeply buried within the source. This component is best modelled by a strongly absorbed (N_H > 5 10^{24} cm^{-2}) power-law plus unabsorbed reflection spectrum (0.15
Bassani Loredana
Cappi L.
Franceschini Alberto
Granato Gian Luigi
Malaguti Giuseppe
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