Searching for Compton-thick AGN with INTEGRAL

Details Searching for Compton-thick AGN with INTEGRAL Searching for Compton-thick AGN with INTEGRAL

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.2007v&link_type=abstract

American Astronomical Society Meeting 207, #20.07; Bulletin of the American Astronomical Society, Vol. 37, p.1190

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The 30 keV peak in the X-ray background strongly suggests there should be a large number of highly obscured AGN in the local universe. However, the exact number of these objects remains unknown, even though they could nearly double the space density of supermassive black holes. These Compton-thick AGN can be detected in the hard X-rays with INTEGRAL. As part of the current observing cycle, we were awarded 2 Msec to perform INTEGRAL imaging of the XMM-LSS field in order to find highly obscured AGN in the local Universe. In this paper, we present preliminary results for the ˜1 Ms of IBIS data obtained so far, including new hard X-ray detections of AGN. We also present the 20---200 keV spectra of the brightest AGN including the z<0.1 Seyfert galaxies NGC 788, NGC 1068, and NGC 1142.

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