Correlating Fermi gamma-ray sources with ultra-high energy cosmic rays

Details Correlating Fermi gamma-ray sources with ultra-high energy cosmic rays Correlating Fermi gamma-ray sources with ultra-high energy cosmic rays

2010-02-15

arxiv.org/abs/1002.2638v3

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

Revised version that considers a smaller deflection angle for UHECRs (3.1 degrees) and a declination range for the artificial

Scientific paper

The origin of ultra-high energy cosmic rays (UHECRs) is one of the enduring mysteries of high-energy astrophysics. To investigate this, we cross-correlate the recently released Fermi Large Area Telescope First Source Catalog (1FGL) with the public sample of UHECRs made available by the Pierre Auger collaboration. Of the 27 UHECRs in the sample, we find 12 events that arrived within 3.1 degrees of Fermi sources. However, we find similar or larger number of matches in 63 out of 100 artificial UHECR samples constructed using positions randomly drawn from the BATSE 4B catalog of gamma-ray bursts (GRBs) collected from 1991 until 1996. Based on our analysis, we find no evidence that UHECRs are associated with Fermi sources. We conclude with some remarks about the astrophysical origin of cosmic rays.

Affiliated with

Also associated with

No associations

Rating

Correlating Fermi gamma-ray sources with ultra-high energy cosmic rays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Correlating Fermi gamma-ray sources with ultra-high energy cosmic rays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlating Fermi gamma-ray sources with ultra-high energy cosmic rays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-145561