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16 February 2025
 
  » arxiv » astro-ph/0107151

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BeppoSAX observations of Mrk 841 and Mrk335
S. Bianchi ; G. Matt ; F. Haardt ; L. Maraschi ; F. Nicastro ; G.C. Pero la ; P.O. Petrucci ; L. Piro ;
Date 9 Jul 2001
Subject astro-ph
AbstractWe present and discuss BeppoSAX observations of Mrk841 and Mrk335, two Seyfert 1 galaxies in which previous observations have established the presence of soft excesses. We confirm the soft excess in both sources, even if for Mrk~841 a warm absorber provides a fit almost as good as the one with a true excess. As far as the hard X-ray continuum is concerned, a Comptonization model provides a fit as good as a power law and a physically sound solution for Mrk841. For Mrk335, the Comptonization model gives a result which is somewhat better on statistical ground, but rather problematic on physical ground. The most interesting results regard the reprocessing components. For Mrk841 we find a very large reflection continuum but an almost normal iron line equivalent width even if, within the errors, a solution in which both components are a factor ~2 larger than expected for an accretion disc is still marginally acceptable. If this is the case, an anisotropy of the primary emission seems the best explanation. On the contrary, in Mrk335 we find a very large iron line EW but a reflection component not accordingly large. In this case, the best solution seems to be in terms of reflection from an ionized disc.
Source arXiv, astro-ph/0107151
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