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The saturation of the cosmic diffuse γ-ray background by the Seyfert galaxy component

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Abstract

The nature of the diffuse cosmic background in the low γ-ray energy range has been widely discussed but not definitively solved. Unresolved active galaxies have become good candidates for its origin ever since they have been identified as γ-ray emitting objects. In particular, the summed contribution of Seyfert galaxies is expected to be dominant to such an extent that a straight forward calculation, based on their volume emissivity, predicts a considerable excess above the observed level of the isotropic background flux. In this letter we explore different ways to reconcile the observational data on these active galactic nuclei with the measured intensity of the cosmic diffuse γ-radiation.

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Author notes

  1. L. Bassani

    Present address: Istituto TESRE (C.N.R.), Bologna, Italy

Authors and Affiliations

  1. Department of Physics, University of Southampton, England, UK

    L. Bassani & A. J. Dean

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  1. L. Bassani
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  2. A. J. Dean
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Bassani, L., Dean, A.J. The saturation of the cosmic diffuse γ-ray background by the Seyfert galaxy component. Astrophys Space Sci 100, 457–460 (1984). https://doi.org/10.1007/BF00651627

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  • DOI: https://doi.org/10.1007/BF00651627

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