Deconvolution of the Relativistic Fe-K Lines in Seyfert 1 Galaxies and Physics from the Narrow Emission Component

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Chandra Proposal Id #02700265

Scientific paper

Chandra discovered a narrow Fe-K emission line in NGC 5548 which was anticipated from AGN models but never before unambiguously observed in a Seyfert 1 galaxy. Detecting and measuring the parameters of the narrow line is essential for better understanding and modeling the relativistically broadened Fe-K lines in Sy 1 galaxies. The narrow line is in its own right a tracer of the covering factor, ionization state, location, column, Fe abundance, and velocity field of circumnuclear matter. Without any knowledge of the narrow Fe-K line, the accretion disk parameters derived from the relativistic Fe-K component will always be uncertain. We propose a program to deconvolve the narrow line with Chandra for a sample of Sy 1s. Chandra is the only mission that can do this for at least four years.

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