Update on the intermediate arrival-direction analyses of the Pierre Auger Observatory
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(Published version)
Date
2025
Authors
Abdul Halim, A.
Abreu, P.
Aglietta, M.
Allekotte, I.
Almeida Cheminant, K.
Almela, A.
Aloisio, R.
Alvarez-Muñiz, J.
Ambrosone, A.
Ammerman Yebra, J.
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Conference paper
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Proceedings of Science, 2025, vol.501, pp.0177-1-0177-12
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International Cosmic Ray Conference (ICRC) (15 Jul 2025 - 24 Jul 2025 : Geneva, Switzerland)
Abstract
We present an update on the arrival-direction analyses conducted on intermediate angular scales using the complete Phase I data of the Pierre Auger Observatory up to the end of 2022 with a total exposure of 135,000 km<sup>2</sup> sr yr. We show the arrival-direction distribution of the ultra-high-energy cosmic rays along the supergalactic plane above 20 EeV, and an update in the search for magnetically-induced signatures in the arrival directions. Furthermore, we present the potential of introducing estimators for the rigidity ordering of the events to enhance arrival-direction analyses on small to intermediate angular scales. To achieve this, we take advantage of two estimators working on the response of the surface detector: an analytical fit based on air-shower universality and a deep neural network.
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© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).