Sigl, G. (2019) Cosmic ray origin and anisotropy measurement by the Pierre Auger Observatory. Il nuovo cimento C, 42 (6). pp. 1-7. ISSN 1826-9885
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Abstract
Recently the Pierre Auger Observatory has observed a dipolar anisotropy of amplitude 6.5% above 8 × 1018 eV that is unrelated to the Galactic plane. While the significance is largest above 8 × 1018 eV, the cosmic ray data indicate a growth of the dipolar amplitude from 4×1018 eV to 3.2×1019 eV and beyond. Furthermore, above 4 × 1019 eV, indications have been found for intermediate-scale anisotropies associated with extragalactic gamma-ray sources. Apart from those indications no other significant anisotropies are seen. We review these observations and discuss their relevance for the origin of ultra-high energy cosmic rays.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 29 Jan 2021 15:03 |
| Last Modified: | 29 Jan 2021 15:03 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20688 |
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