AGN Populations from Optical Identification of ASCA Surveys
Astrophysics
2007-05-23 v1
Abstract
To understand luminous AGNs in the z<1 universe, the ASCA AGN samples are the best at present. Combining the identified sample of AGNs from ASCA Large Sky Survey and Medium Sensitivity Survey, the sample of hard X-ray selected AGNs have been expanded up to 108 AGNs above the 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 nature of absorbed luminous AGNs.
Cite
@article{arxiv.astro-ph/0201495,
title = {AGN Populations from Optical Identification of ASCA Surveys},
author = {Masayuki Akiyama and Yoshihiro Ueda and Kouji Ohta},
journal= {arXiv preprint arXiv:astro-ph/0201495},
year = {2007}
}
Comments
6 pages with 4 figures, to appear in the proceeding of IAU Colloquium 184 "AGN Surveys" (18-22 June 2001, Armenia)