Abstract
We discuss the contribution of the blazar population to the extragalactic background radiation across the electromagnetic (e.m.) spectrum with particular reference to the microwave, hard-X-ray and γ-ray bands. Our estimates are based on a recently derived blazar radio LogN-LogS that was built by combining several radio and multi-frequency surveys. We show that blazar emission integrated over cosmic time gives rise to a considerable broad-band non-thermal cosmic background that dominates the extragalactic brightness in the high-energy part of the e.m. spectrum. We also estimate the number of blazars that are expected to be detected by future planned or hypothetical missions operating in the X-ray and γ-ray energy bands.
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Giommi, P., Colafrancesco, S. (2006). Non-thermal cosmic backgrounds and prospects for future high-energy observations of blazars. In: von Ballmoos, P. (eds) Focusing Telescopes in Nuclear Astrophysics. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5304-7_4
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DOI: https://doi.org/10.1007/978-1-4020-5304-7_4
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