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Diffuse -ray emission from misaligned active galactic nuclei

Active galactic nuclei (AGNs) with jets seen at small viewing angles are the most luminous and abundant objects in the -ray sky. AGNs with jets misaligned along the line of sight appear fainter in the sky but are more numerous than the brighter blazars. We calculate the diffuse -ray emission due to... Full description

Journal Title: The Astrophysical Journal 2014, Vol.780(2), p.161 (14pp)
Main Author: Di Mauro, M.
Other Authors: Calore, F. , Donato, F. , Ajello, M. , Latronico, L.
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0004-637X ; E-ISSN: 1538-4357 ; DOI: 10.1088/0004-637X/780/2/161
Link: http://dx.doi.org/10.1088/0004-637X/780/2/161
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recordid: iop10.1088/0004-637X/780/2/161
title: Diffuse -ray emission from misaligned active galactic nuclei
format: Article
creator:
  • Di Mauro, M.
  • Calore, F.
  • Donato, F.
  • Ajello, M.
  • Latronico, L.
subjects:
  • Astrophysics - High Energy Astrophysical Phenomena
  • Astrophysics - Cosmology And Nongalactic Astrophysics
  • High Energy Physics - Phenomenology
ispartof: The Astrophysical Journal, 2014, Vol.780(2), p.161 (14pp)
description: Active galactic nuclei (AGNs) with jets seen at small viewing angles are the most luminous and abundant objects in the -ray sky. AGNs with jets misaligned along the line of sight appear fainter in the sky but are more numerous than the brighter blazars. We calculate the diffuse -ray emission due to the population of misaligned AGNs (MAGNs) unresolved by the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope ( Fermi ). A correlation between the -ray luminosity and the radio-core luminosity is established and demonstrated to be physical by statistical tests, as well as compatible with upper limits based on Fermi -LAT data for a large sample of radio-loud MAGNs. We constrain the derived -ray luminosity function by means of the source-count distribution of the radio galaxies detected by the Fermi -LAT. We finally calculate the diffuse -ray flux due to the whole MAGN population. Our results demonstrate that MAGNs can contribute from 10% up to nearly the entire measured isotropic gamma-ray background. We evaluate a theoretical uncertainty on the flux of almost an order of magnitude.
language: eng
source:
identifier: ISSN: 0004-637X ; E-ISSN: 1538-4357 ; DOI: 10.1088/0004-637X/780/2/161
fulltext: fulltext
issn:
  • 0004-637X
  • 1538-4357
  • 0004637X
  • 15384357
url: Link


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titleDiffuse -ray emission from misaligned active galactic nuclei
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ispartofThe Astrophysical Journal, 2014, Vol.780(2), p.161 (14pp)
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descriptionActive galactic nuclei (AGNs) with jets seen at small viewing angles are the most luminous and abundant objects in the -ray sky. AGNs with jets misaligned along the line of sight appear fainter in the sky but are more numerous than the brighter blazars. We calculate the diffuse -ray emission due to the population of misaligned AGNs (MAGNs) unresolved by the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope ( Fermi ). A correlation between the -ray luminosity and the radio-core luminosity is established and demonstrated to be physical by statistical tests, as well as compatible with upper limits based on Fermi -LAT data for a large sample of radio-loud MAGNs. We constrain the derived -ray luminosity function by means of the source-count distribution of the radio galaxies detected by the Fermi -LAT. We finally calculate the diffuse -ray flux due to the whole MAGN population. Our results demonstrate that MAGNs can contribute from 10% up to nearly the entire measured isotropic gamma-ray background. We evaluate a theoretical uncertainty on the flux of almost an order of magnitude.
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descriptionActive galactic nuclei (AGNs) with jets seen at small viewing angles are the most luminous and abundant objects in the -ray sky. AGNs with jets misaligned along the line of sight appear fainter in the sky but are more numerous than the brighter blazars. We calculate the diffuse -ray emission due to the population of misaligned AGNs (MAGNs) unresolved by the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope ( Fermi ). A correlation between the -ray luminosity and the radio-core luminosity is established and demonstrated to be physical by statistical tests, as well as compatible with upper limits based on Fermi -LAT data for a large sample of radio-loud MAGNs. We constrain the derived -ray luminosity function by means of the source-count distribution of the radio galaxies detected by the Fermi -LAT. We finally calculate the diffuse -ray flux due to the whole MAGN population. Our results demonstrate that MAGNs can contribute from 10% up to nearly the entire measured isotropic gamma-ray background. We evaluate a theoretical uncertainty on the flux of almost an order of magnitude.
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abstractActive galactic nuclei (AGNs) with jets seen at small viewing angles are the most luminous and abundant objects in the -ray sky. AGNs with jets misaligned along the line of sight appear fainter in the sky but are more numerous than the brighter blazars. We calculate the diffuse -ray emission due to the population of misaligned AGNs (MAGNs) unresolved by the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope ( Fermi ). A correlation between the -ray luminosity and the radio-core luminosity is established and demonstrated to be physical by statistical tests, as well as compatible with upper limits based on Fermi -LAT data for a large sample of radio-loud MAGNs. We constrain the derived -ray luminosity function by means of the source-count distribution of the radio galaxies detected by the Fermi -LAT. We finally calculate the diffuse -ray flux due to the whole MAGN population. Our results demonstrate that MAGNs can contribute from 10% up to nearly the entire measured isotropic gamma-ray background. We evaluate a theoretical uncertainty on the flux of almost an order of magnitude.
doi10.1088/0004-637X/780/2/161
date2014-01-10