NGC 4388 the Last Remaining Source - Chandra HETG Constrains on the Fe K line region

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Chandra Proposal Id #09700655

Scientific paper

High spectral resolution x-ray observations of AGN in the Fe K band have been critical for a set of important discoveries including ionized outflowing absorbers, Compton scattering shoulders on the Fe K lines, strong tests of the broad lines in AGN, and the dynamics of the Fe K line region. Thus high to moderate S/N, high resolution x-ray spectra are vital for understanding the geometry of the central regions. Most archival Chandra HETG observations of AGN are severely hampered by low S/N and to date there have been only two 'good' S/N grating observations of Seyfert IIs in the Fe K line region. We propose to obtain HETG for the only remaining object, NGC 4388, that is bright enough to get high S/N observations in the Fe K band in less than 300 ks .

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