XMM-Newton observations expose AGN in apparently normal galaxies

Details XMM-Newton observations expose AGN in apparently normal galaxies XMM-Newton observations expose AGN in apparently normal galaxies

2003-04-16

arxiv.org/abs/astro-ph/0304308v1

Astronomy and Astrophysics

Astrophysics

Accepted for publication on A&A; 11 pages, 8 figures

Scientific paper

We have performed a detailed analysis of 3 optically normal galaxies extracted from the XMM Bright Serendipitous Source Sample. Thanks to the good statistics of the XMM-Newton data, we have unveiled the presence of an AGN in all of them. In particular, we detect both X-ray obscured (N_H>10^{22} cm^{-2}) and unobscured (N_H<10^{22} cm^{-2}) AGN with intrinsic 2--10 keV luminosities in the range between 10^{42} -- 10^{43} erg s^{-1}. We find that the X-ray and optical properties of the sources discussed here could be explained assuming a standard AGN hosted by galaxies with magnitudes M_R

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