Do Normal Galaxies Host a Black Hole? The High Energy Perspective
Astrophysics
2007-05-23 v1
Abstract
We review ASCA results on a search for low luminosity active nuclei at the center of nearby normal galaxies. More than a dozen low-luminosity AGN have been discovered with 2-10 keV luminosity in the range 10^{40-41} ergs/s. Their X-ray properties are in some respects similar to those of luminous Seyfert galaxies, but differ in other respects. We also present estimated black hole masses in low luminosity AGNs and a drastic activity decline in the nucleus of the radio galaxy Fornax A. These results altogether suggest that relics of the past luminous AGNs lurk in nearby normal galaxies.
Keywords
Cite
@article{arxiv.astro-ph/9905218,
title = {Do Normal Galaxies Host a Black Hole? The High Energy Perspective},
author = {Y. Terashima},
journal= {arXiv preprint arXiv:astro-ph/9905218},
year = {2007}
}
Comments
8 pages, To appear in the Proceedings of the 3rd INTEGRAL Workshop "The Extreme Universe"