Search for Point Sources of Ultra-High Energy Cosmic Rays Above 40 EeV Using a Maximum Likelihood Ratio Test

Preprint

23 December 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0412617

Abstract

We present the results of a search for cosmic ray point sources at energies above 40 EeV in the combined data sets recorded by the AGASA and HiRes stereo experiments. The analysis is based on a maximum likelihood ratio test using the probability density function for each event rather than requiring an a priori choice of a fixed angular bin size. No statistically significant clustering of events consistent with a point source is found.

Keywords

PROBABILITY DENSITY FUNCTION
MAXIMUM LIKELIHOOD
LIKELIHOOD RATIO
ENERGY COSMIC
POINT SOURCES
RATIO TEST
EEV USING
BIN

All Related Versions

Version 1, 2004-12-23, ArXiv
Published version: The Astrophysical Journal, 623 (1), 164.

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