AAS 204th Meeting, June 2004
Session 14 Multi-wavelength Astronomy and SDSS
Special Session, Monday, May 31, 2004, 10:00-11:30am, 603/605/607

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[14.06] X-ray Properties of SDSS AGN at Low and High Redshift

I.V. Strateva, W.N. Brandt, D.P. Schneider (Penn State), S.F. Anderson (Univ. of Washington), B. Margon (STScI), M.A. Strauss (Princeton), W. Voges (MPE, Garching)

The Sloan Digital Sky Survey (SDSS) has the largest redshift range and area of current ongoing surveys for active galactic nuclei (AGN). As of this meeting the SDSS consists of about 35,000 AGN (selected from about 2600 sq. degrees) covering redshifts between 0 and 6.4, with AGN luminosities ranging from 10e42 to 10e47erg/s; this database permits investigation of the optical properties, environments, and the luminosity density of AGN. High energy observations of AGN, performed with Chandra, XMM-Newton, and other missions, complement the optical data, as the X-ray data are less affected by host-galaxy dilution and can penetrate neutral Hydrogen obscuring columns of up to ~ 10e24 cm-2. Cross-correlation of the SDSS AGN with X-ray surveys enables us to probe directly AGN central engines and study their evolution with redshift. In this talk I will summarize the current studies of SDSS AGN serendipitously found and specifically targeted for observation with some of the best past and current X-ray missions, focusing on the X-ray properties of different optical AGN types (NLSy1, type II AGN, red QSOs, etc.) and the evolution of the optical-to-X-ray emission with redshift.

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