X-ray monitoring of NGC~4507: X-ray absorption by Broad Line Clouds

Details X-ray monitoring of NGC~4507: X-ray absorption by Broad Line Clouds X-ray monitoring of NGC~4507: X-ray absorption by Broad Line Clouds

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop..139r&link_type=abstract

XMM-Newton Proposal ID #06538705

Other

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Ngc 4507, Ngc 4507, Ngc 4507, Ngc 4507, Ngc 4507

Scientific paper

We propose a new XMM-Newton monitoring of the X-ray obscured AGN in NGC~4507, with the aim of testing a scenario where the variable X-ray absorption is due to the broad emission line clouds. The identification of these two components is suggested by our previous monitoring of a few other sources (NGC 1365, NGC 4151, UGC 4203), where rapid X-ray absorption variability, suggestive of an extremely compact X-ray absorber, has been found ``by chance". The new campaign we propose is for the first time based on a precise prediction, rather than on a blind search, and will therefore provide a strong test of the general validity of this new scheme for the structure of the AGN circumnuclear medium.

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