Solar-cycle Variations of South Atlantic Anomaly Proton Intensities Measured with the PAMELA Mission

Bruno, A. and Martucci, M. and Cafagna, F. S. and Sparvoli, R. and Adriani, O. and Barbarino, G. C. and Bazilevskaya, G. A. and Bellotti, R. and Boezio, M. and Bogomolov, E. A. and Bongi, M. and Bonvicini, V. and Campana, D. and Carlson, P. and Casolino, M. and Castellini, G. and De Santis, C. and Galper, A. M. and Koldashov, S. V. and Koldobskiy, S. and Kvashnin, A. N. and Lenni, A. and Leonov, A. A. and Malakhov, V. V. and Marcelli, L. and Marcelli, N. and Mayorov, A. G. and Menn, W. and Mergè, M. and Mocchiutti, E. and Monaco, A. and Mori, N. and Mikhailov, V. V. and Munini, R. and Osteria, G. and Panico, B. and Papini, P. and Pearce, M. and Picozza, P. and Ricci, M. and Ricciarini, S. B. and Simon, M. and Sotgiu, A. and Spillantini, P. and Stozhkov, Y. I. and Vacchi, A. and Vannuccini, E. and Vasilyev, G. I. and Voronov, S. A. and Yurkin, Y. T. and Zampa, G. and Zampa, N. and Zharaspayev, T. R. (2021) Solar-cycle Variations of South Atlantic Anomaly Proton Intensities Measured with the PAMELA Mission. The Astrophysical Journal Letters, 917 (2). L21. ISSN 2041-8205

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Abstract

We present a study of the solar-cycle variations of >80 MeV proton flux intensities in the lower edge of the inner radiation belt, based on the measurements of the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) mission. The analyzed data sample covers an ∼8 yr interval from 2006 July to 2014 September, thus spanning from the decaying phase of the 23rd solar cycle to the maximum of the 24th cycle. We explored the intensity temporal variations as a function of drift shell and proton energy, also providing an explicit investigation of the solar modulation effects at different equatorial pitch angles. PAMELA observations offer new important constraints for the modeling of low-altitude particle radiation environment at the highest trapping energies.

Item Type: Article
Subjects: Librbary Digital > Physics and Astronomy
Depositing User: Unnamed user with email support@librbarydigit.com
Date Deposited: 09 May 2023 09:01
Last Modified: 13 Sep 2024 07:59
URI: http://info.openarchivelibrary.com/id/eprint/592

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