# THE γ -RAY BACKGROUND CONSTRAINS THE ORIGINS OF THE RADIO AND X-RAY BACKGROUNDS

@article{Lacki2011THE,
title={THE $\gamma$ -RAY BACKGROUND CONSTRAINS THE ORIGINS OF THE RADIO AND X-RAY BACKGROUNDS},
author={Brian C. Lacki},
journal={The Astrophysical Journal},
year={2011},
volume={729}
}
• B. Lacki
• Published 1 November 2010
• Physics
• The Astrophysical Journal
Cosmic ray protons generate γ-rays, neutrinos, and secondary electrons and positrons (e ±) through pion-producing collisions with gas atoms. Any synchrotron or inverse Compton (IC) radiation from secondary e ± is therefore accompanied by pionic γ-rays. Using the extragalactic γ-ray background, we constrain the contribution of secondary e ± to the cosmic radio, X-ray, and soft γ-ray backgrounds. These bounds depend on the unknown hadronic contribution to the γ-ray background and the backgrounds…
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