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Search for correlations between the arrival directions of IceCube neutrino events and ultrahigh-energy cosmic rays detected by the Pierre Auger Observatory and the Telescope Array
https://repo.qst.go.jp/records/48100
https://repo.qst.go.jp/records/481009ad823a5-2d13-4e8b-9a90-07e520533f77
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-07-19 | |||||
タイトル | ||||||
タイトル | Search for correlations between the arrival directions of IceCube neutrino events and ultrahigh-energy cosmic rays detected by the Pierre Auger Observatory and the Telescope Array | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
内堀, 幸夫
× 内堀, 幸夫× 内堀 幸夫 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This paper presents the results of different searches for correlations between very high-energy neutrino candidates detected by IceCube and the highest-energy cosmic rays measured by the Pierre Auger Observatory and the Telescope Array. We first consider samples of cascade neutrino events and of high-energy neutrino-induced muon tracks, which provided evidence for a neutrino flux of astrophysical origin, and study their cross-correlation with the ultrahigh-energy cosmic ray (UHECR) samples as a function of angular separation. We also study their possible directional correlations using a likelihood method stacking the neutrino arrival directions and adopting different assumptions on the size of the UHECR magnetic deflections. Finally, we perform another likelihood analysis stacking the UHECR directions and using a sample of through-going muon tracks optimized for neutrino point-source searches with sub-degree angular resolution. No indications of correlations at discovery level are obtained for any of the searches performed. The smallest of the p-values comes from the search for correlation between UHECRs with IceCube high-energy cascades, a result that should continue to be monitored. | |||||
書誌情報 |
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 発行日 2016-01 |
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DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/1475-7516/2016/01/037 |