Extensive programs of follow-up observations of hard X-ray selected sources have unambiguously revealed that the sources of the X-ray background are characterized by an extremely large dispersion in their optical magnitude and spectroscopic classification. Here we present the results of an attempt to understand the nature of the observed variety using a simple prescription for their optical to X-ray energy distribution.

Comastri, A., Brusa, M., Mignoli, M., Baldi, A., Ciliegi, P., Cocchia, F., et al. (2003). Unconventional AGN in hard X-ray surveys. ASTRONOMISCHE NACHRICHTEN, 324(1-2), 28-31 [10.1002/asna.200310008].

Unconventional AGN in hard X-ray surveys

LA FRANCA, Fabio;Matt G;
2003-01-01

Abstract

Extensive programs of follow-up observations of hard X-ray selected sources have unambiguously revealed that the sources of the X-ray background are characterized by an extremely large dispersion in their optical magnitude and spectroscopic classification. Here we present the results of an attempt to understand the nature of the observed variety using a simple prescription for their optical to X-ray energy distribution.
2003
Comastri, A., Brusa, M., Mignoli, M., Baldi, A., Ciliegi, P., Cocchia, F., et al. (2003). Unconventional AGN in hard X-ray surveys. ASTRONOMISCHE NACHRICHTEN, 324(1-2), 28-31 [10.1002/asna.200310008].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/118538
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