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The characteristics of Forbush decreases based on data from AMS-02 experiment and fluxes of solar cosmic rays on GOES-15 one
- Authors: Dorosheva D.N.1,2, Arkhangelskaja I.V.2, Borog V.V.2
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Affiliations:
- Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences
- National Research Nuclear University MEPhI
- Issue: Vol 89, No 6 (2025)
- Pages: 984-988
- Section: Physics of Cosmic Rays
- URL: https://consilium.orscience.ru/0367-6765/article/view/692836
- DOI: https://doi.org/10.31857/S0367676525060299
- ID: 692836
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Abstract
An analysis of the dependence of the amplitudes of the 10 strongest preceded by Halo-type CMEs Forbush decreases in proton and helium nuclei fluxes according to AMS-02 data on the magnetic rigidity of particles showed that it is well approximated by a power function (as was shown in the PAMELA experiment) in the rigidity range from 1 to 10–12 GV. The index of this function is in the range from –0.38±0.02 to –0.68 ± 0.04 for protons and from –0.41± 0.03 to –0.79 ± 0.04 for helium nuclei. But in a wider range of rigidity values up to 20 GV, such approximation significance level is only 90–92% for protons and 90–96% for helium nuclei. Exponential functions providing 95–99% significance level both for protons and helium nuclei should be used over the entire range of rigidities. Comparison of time series for protons according to AMS-02 and GOES-15 data shows the possibility of observing SEP and SPE together with the background Forbush decreases.
Keywords
About the authors
D. N. Dorosheva
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences; National Research Nuclear University MEPhI
Email: dorosheva2000@list.ru
Moscow, Russia
I. V. Arkhangelskaja
National Research Nuclear University MEPhIMoscow, Russia
V. V. Borog
National Research Nuclear University MEPhIMoscow, Russia
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