HEAD 2003 Meeting
Session 52. Active Galactic Nuclei I
Invited, Wednesday, March 26, 2003, 6:00-7:00pm

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[52.02] X-ray spectra of Seyfert 2 galaxies and their contribution to the X-ray background

P. T. Zycki (Nicolaus Copernicus Astronomical Center, Warsaw, Poland)

I will review the broad band X-ray spectral properties of Seyfert 2 galaxies. Recent X-ray spectral and variability studies of Seyferts 2 revealed a complex nature of the X-ray absorbers in these sources. I will discuss possible scenarios for the absorbers and their consequences for the contribution of Seyferts 2 to the Cosmic X-ray Background.

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Bulletin of the American Astronomical Society, 35#2
© 2003. The American Astronomical Soceity.