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 language | English (US) |
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| Pages | 559-562 |
| Number of pages | 4 |
| State | Published - 2007 |
| Event | 30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan, Mexico Duration: Jul 3 2007 → Jul 11 2007 |
Other
| Other | 30th International Cosmic Ray Conference, ICRC 2007 |
|---|---|
| Country/Territory | Mexico |
| City | Merida, Yucatan |
| Period | 7/3/07 → 7/11/07 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics