XMM monitoring of the Seyfert Galaxy NGC 4151: Probing the Disk-Wind Connection

Details XMM monitoring of the Seyfert Galaxy NGC 4151: Probing the Disk-Wind Connection XMM monitoring of the Seyfert Galaxy NGC 4151: Probing the Disk-Wind Connection

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..105k&link_type=abstract

XMM-Newton Proposal ID #04026602

Physics

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Ngc 4151, Ngc 4151, Xmm-Newton Proposal 04026602

Scientific paper

Recent X-ray observations of NGC 4151 have revealed dramatic changes in the X-ray absorption due to bulk motion of the gas across our line-of-sight. Based on photoionization models, much of this component must lie within 0.1 pc of the central source, which, combined with the large transverse velocity, suggests that the absorber arises in a disk-driven wind, making NGC 4151 the only Seyfert 1 to have shown direct evidence of this phenomenon. We propose a series of 4 new XMM-Newton observations of NGC 4151, of 40 ksec each, to fully constrain the kinematics, location, and physical conditions of the high-column X-ray aborber, and probe the relative effects of radiation driving, thermal pressure, and magnetocentrifugal forces in accelerating the gas.

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