On the nature of X-ray Bright Optically Normal galaxies
Astrophysics
2007-05-23 v1
Abstract
Multiwavelength observations of the hard X-ray selected sources by Chandra and XMM-Newton surveys have significantly improved our knowledge of the objects responsible of the hard X-ray background. A surprising finding is the discovery of a population of optically dull, X-ray bright galaxies emerging at 2-10 keV fluxes of the order of 10^{-14} erg cm^{-2} s^{-1}. We present preliminary results of multiwavelength observations of a few objects serendipitously discovered in the field of XMM-Newton and Chandra observations and intensively studied at longer wavelengths.
Keywords
Cite
@article{arxiv.astro-ph/0203019,
title = {On the nature of X-ray Bright Optically Normal galaxies},
author = {A. Comastri and M. Brusa and P. Ciliegi and M. Mignoli and F. Fiore and R. Maiolino and P. Severgnini and A. Baldi and S. Molendi and C. Vignali and F. La Franca and G. Matt and G. C. Perola},
journal= {arXiv preprint arXiv:astro-ph/0203019},
year = {2007}
}
Comments
6 pages, 6 figures. Oral contribution to "New Visions of the X-ray Universe in the XMM-Newton and Chandra Era", 26-30 November 2001, ESTEC, The Netherlands