XMM-Newton observations of NGC4258

Details XMM-Newton observations of NGC4258 XMM-Newton observations of NGC4258

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop...24r&link_type=abstract

XMM-Newton Proposal ID #04005603

Physics

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Ngc4258, Ngc4258, Ngc4258, Xmm-Newton Proposal 04005603

Scientific paper

We request three XMM observations totaling 200ksec of the low-luminosity active galaxy NGC4258. The proposed program will allow us to (1) Probe the accretion disk geometry through the shape, strength and variability of the iron emission line discovered by ASCA, (2) Search for the absorption line signatures of an ionized outflow hinted at in Chandra ACIS data, (3) Obtain a unique probe the accretion disk structure through month-to-month variations in the neutral absorbing column. Given the details constraints on the geometry of this AGN and the mass of the central black hole from radio observations of this object, these X-ray investigations are key to understanding the physics of low-luminosity black hole accretion.

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