PoS - Proceedings of Science
Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - SH - Solar & Heliospheric
Proton flux variations in the inner radiation belt in solar cycle 24
S. Aleksandrin*, A. Galper, S. Koldashov, V. Malakhov, V. Mikhailov and T. Zharaspayev
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Pre-published on: July 22, 2019
Published on: July 02, 2021
This report presents the results of analysis of proton flux variations in the inner radiation belt obtained by ARINA spectrometer. The ARINA satellite experiment was carried out on board the Russian low-orbit satellite Resurs-DK1 (altitude 350-600 km, inclination 70$^{o}$) from 2006 till 2016. The spectrometer registered high-energy protons (30-100 MeV) with energy resolution of 10 \% and angular resolution of 7$^{o}$. In this work proton flux variations in the inner radiation belt (L=1.14, B=0.20 G) were analyzed with solar index F10.7 in various phases of the 24th solar cycle. Proton flux anticorrelates with F10.7 index (coefficient correlation -0.95) and its value varies 5-7 times. Time lag between proton flux and F10.7 index was found to be 5-6 months for total period (2006-2016) and it can decrease to 2-3 months in some periods of the 24th solar cycle.
DOI: https://doi.org/10.22323/1.358.1049
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