Search for Small-Scale Anisotropy of Cosmic Rays above 10^19 eV with HiRes Stereo

Preprint

18 August 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0408343

Abstract

We present the results of a search for small-scale anisotropy in the distribution of arrival directions of cosmic rays above 10^19 eV measured in stereo by the High Resolution Fly's Eye (HiRes) experiment. Performing an autocorrelation scan in energy and angular separation, we find that the strongest correlation signal in the HiRes stereo data set recorded between December 1999 and January 2004 is consistent with the null hypothesis of isotropically distributed arrival directions. These results are compared to previous claims of significant small-scale clustering in the AGASA data set.

Keywords

SMALL SCALE ANISOTROPY
ARRIVAL DIRECTIONS
SEARCH FOR SMALL
HIRES STEREO
COSMIC RAYS
STEREO

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Version 1, 2004-08-18, ArXiv

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