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27 April 2024 |
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On the nature of X-ray Bright Optically Normal galaxies | A. Comastri
; M. Brusa
; P. Ciliegi
; M. Mignoli
; F. Fiore
; R. Maiolino
; P. Severgnini
; A. Baldi
; S. Molendi
; C. Vignali
; F. La Franca
; G. Matt
; G.C. Perola
; | Date: |
3 Mar 2002 | Subject: | astro-ph | Affiliation: | Oss. Astronomico-Bologna), M. Brusa (Dip. di Astronomia-Bologna), P. Ciliegi, M. Mignoli (Oss. Astronomico-Bologna), F. Fiore (Oss. Astronomico-Roma), R. Maiolino (Oss. Astrofisico di Arcetri-Firenze), P. Severgnini (Oss. Astronomico di Brera-Milano), | 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. | Source: | arXiv, astro-ph/0203019 | Services: | Forum | Review | PDF | Favorites |
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