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arXiv:astro-ph/0402226 (astro-ph)
[Submitted on 10 Feb 2004]

Title:The XMM-Newton and BeppoSAX view of the Ultra Luminous Infrared Galaxy MKN 231

Authors:V. Braito, R. Della Ceca, E. Piconcelli, P. Severgnini, L. Bassani, M. Cappi, A. Franceschini, K. Iwasawa, G. Malaguti, P. Marziani, G.G.C. Palumbo, M. Persic, G. Risaliti, M. Salvati
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Abstract: We discuss XMM-Newton and BeppoSAX observations of MKN 231, the lowest-redshift Broad Absorption Line (BAL) QSO known so far and one of the best-studied Ultra Luminous Infrared Galaxies. By combining the XMM-Newton spectral resolution and the high-energy bandpass of BeppoSAX we have been able to study in more detail than previously possible its 0.2--50 keV spectral properties. The BeppoSAX PDS data unveiled, for the first time, a highly absorbed ($N_H\sim 2\times 10^{24}$cm$^{-2}$) power-law component. We find that: a) below 10 keV we are seeing only reprocessed radiation through reflection and/or scattering; b) the intrinsic 2-10 keV luminosity of MKN 231 is $1^{+1.0}_{-0.5} \times 10^{44}$ ergs s$^{-1}$, i.e. more than an order of magnitude greater than previous measurements; c) the starburst activity significantly contributes to the soft ($E<2$ keV) X-ray emission.
Comments: 11 pages,3 figures, Latex manuscript, Accepted for publication in Astronomy and Astrophysics
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0402226
  (or arXiv:astro-ph/0402226v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0402226
Journal reference: Astron.Astrophys. 420 (2004) 79-88
Related DOI: https://doi.org/10.1051/0004-6361%3A20040061

Submission history

From: Braito Valentina [view email]
[v1] Tue, 10 Feb 2004 13:42:25 UTC (120 KB)
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