X-raying the flow dynamics near the black hole in the quasar E1821+643

Details X-raying the flow dynamics near the black hole in the quasar E1821+643 X-raying the flow dynamics near the black hole in the quasar E1821+643

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop..184c&link_type=abstract

XMM-Newton Proposal ID #05051201

Computer Science

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, E1821+643, Xmm-Newton Proposal 05051201

Scientific paper

We propose a 100 ks observation of the high-luminosity, X-ray bright quasar E1821+643 (z=0.297). This source shows a significant redshifted Fe absorption line that can be interpreted either as pure gravitational redshift, or infall of matter onto the black hole. The absorption line is found superposed on the red wing of a broad Fe K line profile, which strength is also not common for such high-luminosity quasars. Both the absorption and emission lines appear to be variable. The complex FeK emission structure is also confirmed by our analysis of a snapshot (1.7 ks) archival XMM-Newton observation. Our main goal is to confirm the detection of intensity and/or energy variations of the absorption and emission Fe lines, i.e. probe the dynamics of the accretion flow very near the black hole.

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