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Correlation between Ultra-high Energy Cosmic Rays and Active Galactic Nuclei from Fermi Large Area Telescope
We study the possibility that the \(\gamma\)-ray loud active galactic nuclei (AGN) are the sources of ultra-high energy cosmic rays (UHECR), through the correlation analysis of their locations and the arrival directions of UHECR. We use the \(\gamma\)-ray loud AGN with \(d\le 100 {\rm Mpc}\) from th...
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Published in: | arXiv.org 2012-09 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | We study the possibility that the \(\gamma\)-ray loud active galactic nuclei (AGN) are the sources of ultra-high energy cosmic rays (UHECR), through the correlation analysis of their locations and the arrival directions of UHECR. We use the \(\gamma\)-ray loud AGN with \(d\le 100 {\rm Mpc}\) from the second Fermi Large Area Telescope AGN catalog and the UHECR data with \(E\ge 55 {\rm EeV}\) observed by Pierre Auger Observatory. The distribution of arrival directions expected from the \(\gamma\)-ray loud AGN is compared with that of the observed UHECR using the correlational angular distance distribution and the Kolmogorov-Smirnov test. We conclude that the hypothesis that the \(\gamma\)-ray loud AGN are the dominant sources of UHECR is disfavored unless there is a large smearing effect due to the intergalactic magnetic fields. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.1209.0353 |