Author:
Akiyama Masayuki,Ueda Yoshihiro,Ohta Kouji
Abstract
AbstractTo understand luminous AGNs in the z < 1 universe, the ASCA AGN samples are the best at present. Combining the identified sample of AGNs from the ASCA Large Sky Survey and Medium Sensitivity Survey, the sample of hard X-ray selected AGNs has been expanded up to 108 AGNs above a flux limit of 10-13 erg s-1 cm-2 in the 2-10 keV hard X-ray band. We discuss the fraction of absorbed AGNs in the hard X-ray selected AGN sample, and the nature of absorbed luminous AGNs.
Publisher
Cambridge University Press (CUP)
Cited by
2 articles.
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1. AnXMM–Newtonstudy of the hard X–ray sky;Astronomy & Astrophysics;2003-12
2. The HELLAS2XMM survey;Astronomy & Astrophysics;2003-10