Type II Quasars from the Sloan Digital Sky Survey

Details Type II Quasars from the Sloan Digital Sky Survey Type II Quasars from the Sloan Digital Sky Survey

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.1106p&link_type=abstract

American Astronomical Society, HEAD meeting #9, #11.06; Bulletin of the American Astronomical Society, Vol. 38, p.365

Astronomy and Astrophysics

Astronomy

Scientific paper

We present Chandra and XMM-Newton observations of type II quasars selected from the Sloan Digital Sky Survey based on their optical emission line properties, at redshifts of 0.5-0.7. We have supplemented our initial sample of 8 observations (including several archival observations) with 15 additional recent and archival observations. Several objects are likely to be Compton-thick AGN on the basis of low X-ray/[OIII] flux ratios and (in some cases) flat X-ray spectra. We will also present initial results from a Suzaku observation of a Compton-thick AGN (SDSS J0842+3625). We will also discuss novel Bayesian statistical analysis techniques for marginal and non-detections of sources by multiple detectors. This work is funded by NASA grants NNG05GP14G and GO6-7092B

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