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Motion and transport of solar cosmic rays in heliospheric traps: The event on January 28–31, 2001

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Abstract

The results of studying the enhancement of solar cosmic ray fluxes on January 28–31, 2001 in a wide energy range are presented using the ACE spacecraft data. A comparative analysis of temporal variations of the fluxes of charged particles and of the interplanetary medium parameters (interplanetary magnetic field and solar wind) has been performed on the basis of the “reflection” model of motion, accumulation, and modulation of cosmic rays. It is shown that a magnetic trap for solar cosmic rays was created by a plasma stream and flare ejection from an active region in the western part of the solar disk. Particles of low energies (<10 MeV) were captured inside the trap; the dispersion of distribution of particles with different energies inside the trap being determined by its complicated magnetic structure. The power-low dependence of the time of maximum for the flux of particles on their energy is found, and softer energy spectrum inside the trap is explained.

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Authors and Affiliations

  1. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119992, Russia

    V. I. Tulupov, N. A. Vlasova & G. P. Lyubimov

  2. Space Research Institute, Russian Academy of Sciences, Profsoyuznaya ul. 84/32, Moscow, 119991, Russia

    E. E. Grigorenko

Authors
  1. V. I. Tulupov
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  2. E. E. Grigorenko
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  3. N. A. Vlasova
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  4. G. P. Lyubimov
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Correspondence to V. I. Tulupov.

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Original Russian Text © V.I. Tulupov, E.E. Grigorenko, N.A. Vlasova, G.P. Lyubimov, 2012, published in Kosmicheskie Issledovaniya, 2012, Vol. 50, No. 6, pp. 427–434.

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Tulupov, V.I., Grigorenko, E.E., Vlasova, N.A. et al. Motion and transport of solar cosmic rays in heliospheric traps: The event on January 28–31, 2001. Cosmic Res 50, 397–404 (2012). https://doi.org/10.1134/S0010952512060081

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  • DOI: https://doi.org/10.1134/S0010952512060081

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