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Prospects for Cross-correlations of UHECR Events with Astrophysical Sources with Upcoming Space-based Experiments

Venters, T. M.; Romero-Wolf, A.; Olinto, A. V.; Krizmanic, J.; Adams, J. H.; Aloisio, R.; Anzalone, A.; Bagheri, M.; Barghini, D.; Battisti, M.; Bergman, D. R.; Bertaina, M. E.; Bertone, P. F.; Bisconti, F.; Bustamante, M.; Cafagna, F.; Caruso, R.; Casolino, M.; Černý, K.; ... mehr


Ultra-high energy cosmic rays (UHECRs) are the messengers of the most extreme physics in the cosmos; however, efforts to identify their origins have thus far been thwarted by the fact that they don’t point back to their sources. Using statistical studies cross-correlating UHECR arrival directions with astrophysical catalogs, the ground-based Pierre Auger Observatory has reported hints of a correlation with nearby starburst galaxies, as well as lower-significance correlations with other classes of astrophysical sources. Space-based UHECR experiments, such as POEMMA and ZAP, will monitor large interaction volumes on the Earth or the Moon. Within a few years of mission operation time, both missions will achieve unprecedented exposures at energies above 40 EeV across the entire sky. We present studies of the cross-correlation between UHECR event arrival directions and astrophysical catalogs as motivated by expectations for the detector performance for POEMMA and ZAP. We find that both POEMMA and ZAP will achieve 5σ discovery reach for many plausible astrophysical scenarios.

Verlagsausgabe §
DOI: 10.5445/IR/1000154784
Veröffentlicht am 27.01.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 18.03.2022
Sprache Englisch
Identifikator ISSN: 1824-8039
KITopen-ID: 1000154784
Erschienen in Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021), Ed.: A. Kappes
Veranstaltung 37th International Cosmic Ray Conference (ICRC 2021), Online, 12.07.2021 – 23.07.2021
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Seiten Art.-Nr.: 419
Serie Pos proceedings of science ; 395
Vorab online veröffentlicht am 23.07.2021
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