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Galactic Cosmic Ray Intensity in the Upcoming Minimum of the Solar Activity Cycle

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Abstract

During the prolonged and deep minimum of solar activity between cycles 23 and 24, an unusual behavior of the heliospheric characteristics and increased intensity of galactic cosmic rays (GCRs) near the Earth’s orbit were observed. The maximum of the current solar cycle 24 is lower than the previous one, and the decline in solar and, therefore, heliospheric activity is expected to continue in the next cycle. In these conditions, it is important for an understanding of the process of GCR modulation in the heliosphere, as well as for applied purposes (evaluation of the radiation safety of planned space flights, etc.), to estimate quantitatively the possible GCR characteristics near the Earth in the upcoming solar minimum (~2019–2020). Our estimation is based on the prediction of the heliospheric characteristics that are important for cosmic ray modulation, as well as on numeric calculations of GCR intensity. Additionally, we consider the distribution of the intensity and other GCR characteristics in the heliosphere and discuss the intercycle variations in the GCR characteristics that are integral for the whole heliosphere (total energy, mean energy, and charge).

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia

    M. B. Krainev, G. A. Bazilevskaya, M. S. Kalinin, A. K. Svirzhevskaya & N. S. Svirzhevskii

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  1. M. B. Krainev
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  2. G. A. Bazilevskaya
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  3. M. S. Kalinin
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  4. A. K. Svirzhevskaya
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  5. N. S. Svirzhevskii
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Correspondence to M. B. Krainev.

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Original Russian Text © M.B. Krainev, G.A. Bazilevskaya, M.S. Kalinin, A.K. Svirzhevskaya, N.S. Svirzhevskii, 2018, published in Geomagnetizm i Aeronomiya, 2018, Vol. 58, No. 2, pp. 177–186.

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Krainev, M.B., Bazilevskaya, G.A., Kalinin, M.S. et al. Galactic Cosmic Ray Intensity in the Upcoming Minimum of the Solar Activity Cycle. Geomagn. Aeron. 58, 169–177 (2018). https://doi.org/10.1134/S0016793218020111

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