2006/08/11 by E. Churazov, Churazov, E., S. Sazonov +5 · 2 citations
Health Professions · Medicine · Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Radiation Therapy and Dosimetry #Radioactivity and Radon Measurements #X-ray Spectroscopy and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.astro-ph/0608252
openalex publication_date 2006/08/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.