Outflow variability and black hole occultation in NGC 1365

Physics

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Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Ngc 1365, Xmm-Newton Proposal 05051401

Scientific paper

We propose a 360 ksec observation of the Seyfert Galaxy NGC 1365, a source having a unique set of properties, which make it the best suited target among X-ray absorbed AGNs to study the innermost region of AGNs: FeXXV and FeXXVI Kalpha and Kbeta absorption lines (the highest S/N detection so far among AGNs), rapidly varying cold absorber (N_H variations of 10^{23}cm^{-2} in a few hours, changes from Compton-thick to Compton-thin in two days), a relativistic iron emission line. This new long observation will constrain the dimensions of the absorbers, and, for the first time, allow the investigation of the dynamics and physical conditions of the hot absorber responsible of the iron absorption lines.

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