Radio-loud AGN contribution to the Extragalactic Gamma-Ray Background

Details Radio-loud AGN contribution to the Extragalactic Gamma-Ray Background Radio-loud AGN contribution to the Extragalactic Gamma-Ray Background

2011-12-05

arxiv.org/abs/1112.1033v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 4 figures, 2011 Fermi Symposium proceedings - eConf C110509

Scientific paper

Origin of extragalactic gamma-ray background (EGRB) is still a matter of debate. EGRB can either have truly diffuse or unresolved discrete point sources origin. Majority of the Fermi and EGRET detected identified sources are blazar. So, they are expected to be a significant contributors to the EGRB. In order to estimate their contribution to the EGRB one needs to construct their luminosity functions. Here, we examine and construct the evolution and luminosity function of blazars using first LAT AGN catalog. We consider both pure luminosity and pure density evolution models for flat spectrum radio quasars (FSRQs). We also describe the methodology to estimate the contribution from misaligned blazars to the EGRB.

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