Blazar duty-cycle at γ-ray frequencies: constraints from extragalactic background radiation and prospects for AGILE and GLAST

  • Carlotta Pittori
  • Elisabetta Cavazzuti
  • Sergio Colafrancesco
  • Paolo Giommi
Conference paper

Abstract

We take into account the constraints from the observed extragalactic γ-ray background to estimate the maximum duty cycle allowed for a selected sample of WMAP Blazars, in order to be detectable by AGILE and GLAST γ-ray experiments. For the nominal sensitivity values of both instruments, we identify a subset of sources which can in principle be detectable also in a steady state without over-predicting the extragalactic background. This work is based on the results of a recently derived Blazar radio LogN-LogS obtained by combining several multi-frequency surveys.

Keywords

Blazar AGN Extragalactic background 

PACS

95.85.Pw 98.54.Cm 98.62.Ve 

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References

  1. [AGILE Team]
  2. [GLAST-LAT team]
  3. [Giommi et al., 2006]
    Giommi P., Colafrancesco S., Cavazzuti E., Perri M., Pittori C.: Astron. Astrophys. 445, 843–855 (2006), and references therein ADSCrossRefGoogle Scholar
  4. [Padovani et al., 1993]
    Padovani P., et al.: Mon. Not. Roy. Astron. Soc. 260, L21 (1993) ADSGoogle Scholar
  5. [Pittori et al., 2007]
    Pittori, et al.: (2007, in preparation) Google Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  • Carlotta Pittori
    • 1
  • Elisabetta Cavazzuti
    • 1
  • Sergio Colafrancesco
    • 2
  • Paolo Giommi
    • 1
  1. 1.ASI Science Data Center, ASDC c/o ESRINFrascatiItaly
  2. 2.INAF-Osservatorio Astronomico di RomaMonteporzioItaly

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