Maximum Likelihood method for ultrahigh energy cosmic ray cross correlations with astrophysical sources

R. Jansson, G. R. Farrar

    Research output: Contribution to conferencePaper

    Abstract

    We extend the Maximum Likelihood method used by HiRes to study cross correlations between a catalog of candidate astrophysical sources and Ultrahigh Energy Cosmic Rays (UHECRs), to allow for differing source luminosities. Our approach permits individual sources to be ranked according to their likelihood of having emitted the correlated UHECRs. We test both old and new method by simulations for various scenarios. We conclude that there are 9 true correlation between HiRes UHECRs and known BLLacs, with a 6 × 10-5 probability of such a correlation arising by chance.

    Original languageEnglish (US)
    Pages559-562
    Number of pages4
    StatePublished - 2007
    Event30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan, Mexico
    Duration: Jul 3 2007Jul 11 2007

    Other

    Other30th International Cosmic Ray Conference, ICRC 2007
    CountryMexico
    CityMerida, Yucatan
    Period7/3/077/11/07

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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  • Cite this

    Jansson, R., & Farrar, G. R. (2007). Maximum Likelihood method for ultrahigh energy cosmic ray cross correlations with astrophysical sources. 559-562. Paper presented at 30th International Cosmic Ray Conference, ICRC 2007, Merida, Yucatan, Mexico.