The colours of the X-ray background
Abstract
The recent deep X-ray surveys at both soft (0.5--2 keV) and hard (2--10 keV) energies have greatly extended our knowledge of the X-ray source density and spectral shapes at relatively faint fluxes adding further evidence on the fact that discrete sources, mainly AGNs, are responsible for the X-ray background (XRB) emission over a broad energy range. In addition the first complete optically identified samples of soft X-ray sources are becoming available allowing to test the XRB AGN synthesis models in the light of recent results. In this paper I will briefly compare the model predictions with some new observational data.
Cite
@article{arxiv.astro-ph/9809077,
title = {The colours of the X-ray background},
author = {A. Comastri},
journal= {arXiv preprint arXiv:astro-ph/9809077},
year = {2007}
}
Comments
4 pages, 3 figures, Latex macros memsait.sty, epsf.sty, to be pubblished in the proceedings of the conference "Dal nano- al Tera-eV: tutti i colori degli AGN", third Italian conference on AGNs, Roma, May 18-21 1998, Memorie S.A.It