X-ray selected Narrow-Line Seyfert 1 Galaxies
Abstract
We present and discuss the properties of a complete and well defined sample of X-ray selected type 1 AGNs including 26 Narrow-Line Seyfert 1 and 129 Broad-Line Seyfert 1 galaxies derived from the XMM-Newton Bright Serendipitous Survey (XBS). We study the differences between the two classes of AGNs for what concerns the X-ray properties (the photon-index) and the main physical parameters, like the Black-Hole mass and the Eddington ratio. We then consider the two classes together and look for statistical correlations between observed and physical parameters. We find a significant dependence of the photon-index with the Eddington ratio and a weaker (possibly secondary) correlation between the photon index and the Black-Hole Mass.
Keywords
Cite
@article{arxiv.1105.5234,
title = {X-ray selected Narrow-Line Seyfert 1 Galaxies},
author = {A. Caccianiga and P. Severgnini and R. Della Ceca and A. Corral and R. Fanali and E. Marchese},
journal= {arXiv preprint arXiv:1105.5234},
year = {2011}
}
Comments
8 pages, 3 figures, 1 table. Proceedings of the Workshop "Narrow-Line Seyfert 1 Galaxies and Their Place in the Universe", Milano, April 4-6, 2011, (Proceedings of Science)