Authors
E Churazov, R Sunyaev, M Revnivtsev, S Sazonov, S Molkov, S Grebenev, C Winkler, A Parmar, A Bazzano, M Falanga, A Gros, F Lebrun, L Natalucci, P Ubertini, J-P Roques, L Bouchet, E Jourdain, J Knödlseder, R Diehl, C Budtz-Jorgensen, S Brandt, Niels Lund, NJ Westergaard, A Neronov, M Türler, M Chernyakova, R Walter, N Produit, N Mowlavi, J Miguel Mas-Hesse, A Domingo, N Gehrels, E Kuulkers, P Kretschmar, M Schmidt
Publication date
2007/5/1
Journal
Astronomy & Astrophysics
Volume
467
Issue
2
Pages
529-540
Publisher
EDP Sciences
Description
Aims
We study the spectrum of the cosmic X-ray background (CXB) in energy range ~5-100 keV.
Methods
Early in 2006 the INTEGRAL observatory performed a series of four 30 ks observations with the Earth disk crossing the field of view of the instruments. The modulation of the aperture flux due to occultation of extragalactic objects by the Earth disk was used to obtain the spectrum of the Cosmic X-ray Background (CXB). Various sources of contamination were evaluated, including compact sources, Galactic Ridge emission, CXB reflection by the Earth atmosphere, cosmic ray induced emission by the Earth atmosphere and the Earth auroral emission.
Results
The spectrum of the cosmic X-ray background in the energy band 5-100 keV is obtained. The shape of the spectrum is consistent with that obtained previously by the HEAO-1 observatory, while the normalization is ~10% higher. This difference in normalization …
Total citations
Scholar articles
E Churazov, R Sunyaev, M Revnivtsev, S Sazonov… - Astronomy & Astrophysics, 2007