Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-08-11
Astronomy and Astrophysics
Astrophysics
Accepted for publication in MNRAS
Scientific paper
We present calculations of the reflection of the cosmic X-ray background (CXB) by the Earth's atmosphere in the 1--1000 keV energy range. The calculations include Compton scattering and X-ray fluorescent emission and are based on a realistic chemical composition of the atmosphere. Such calculations are relevant for CXB studies using the Earth as an obscuring screen (as was recently done by INTEGRAL). The Earth's reflectivity is further compared with that of the Sun and the Moon -- the two other objects in the Solar system subtending a large solid angle on the sky, as needed for CXB studies.
Churazov Eugene
Revnivtsev Mike
Sazonov Sergei
Sunyaev Rachid
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