A Study on Anisotropy in the Arrival Directions of Ultra-High-Energy Cosmic Rays Observed by Pierre Auger Observatory

We study the anisotropy in the arrival directions of PAO UHECRs, using the point source correlational angular distance distribution. The result shows that the anisotropy is characterized by one prominent excess region and one void region. The excess region is located near the Centaurus A direction,...

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Bibliographic Details
Main Author: Kim, Hang Bae
Format: Text
Language:unknown
Published: arXiv 2012
Subjects:
High Energy Astrophysical Phenomena astro-ph.HE
FOS Physical sciences
South Pole
South pole
Online Access:https://dx.doi.org/10.48550/arxiv.1212.6479
https://arxiv.org/abs/1212.6479
Description
Summary:We study the anisotropy in the arrival directions of PAO UHECRs, using the point source correlational angular distance distribution. The result shows that the anisotropy is characterized by one prominent excess region and one void region. The excess region is located near the Centaurus A direction, supporting that the Centaurus A is a promising UHECR source. The void region near the south pole direction may be used to limit the diffuse isotropic background contribution. : 8 pages

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