What number of cosmic ray events do we need to measure source catalogue correlations?

Marco Dolci, Andrew Romero-Wolf, Stephanie Wissel

Research output: Contribution to journalConference articlepeer-review


Recent analyses of cosmic ray arrival directions have resulted in evidence for a positive correlation with active galactic nuclei source positions that has weak significance against an isotropic source distribution. In this paper, we explore the sample size needed to measure a highly statistically significant correlation to a parent source catalogue. We compare several scenarios for the directional scattering of ultra-high energy cosmic rays given our current knowledge of the galactic and intergalactic magnetic fields. We find significant correlations are possible for a sample of <1000 cosmic ray protons.

Original languageEnglish (US)
Article number347
JournalProceedings of Science
StatePublished - Jan 1 2015
Event34th International Cosmic Ray Conference, ICRC 2015 - The Hague, Netherlands
Duration: Jul 30 2015Aug 6 2015

All Science Journal Classification (ASJC) codes

  • General


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