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Gamma-ray flux distribution analysis on 145 gamma-ray bright blazars

Published online by Cambridge University Press:  11 September 2023

Kenji Yoshida Open the ORCID record for Kenji Yoshida [Opens in a new window] ,
Foteini Oikonomou ,
Maria Petropoulou  and
Kohta Murase
Kenji Yoshida
Affiliation:
Shibaura Institute of Technology, Japan
Foteini Oikonomou
Affiliation:
Norwegian University of Science and Technology, Norway
Maria Petropoulou
Affiliation:
National and Kapodistrian University of Athens, Greece
Kohta Murase
Affiliation:
The Pennsylvania State University, USA
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Abstract

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We present the results of the gamma-ray flux distribution analysis on 145 gamma-ray bright blazars observed by Fermi-LAT. For the gamma-ray flux distribution, we applied a log-normal distribution to discuss the nature of the high-energy emission processes of blazars and a power-law distribution convolved with a Poisson distribution to investigate the implications of gamma-ray bright blazars for neutrino emission. Both distributions can represent the observed flux distributions as well. The leptonic models, which give the physical relationship between neutrinos and gamma rays, indicate that the flaring contribution to the neutrino emission can be dominant for the power-law index less than ∼2.5. From the power-law distribution analysis, we found that the power-law index < 2.5 accounts for the 82 % blazars. This result suggests that the flaring contribution of blazars is dominant for high-energy neutrino emission.

Keywords

galaxies: activegalaxies: jetsgamma rays: observationsmethods: data analysis
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S375: The Multimessenger Chakra of Blazar Jets , December 2021 , pp. 18 - 21
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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