The stochastic modeling of the short-time variations of the galactic cosmic rays

We present the stochastic model of the galactic cosmic ray (GCR) particles transport in the heliosphere. The model is created based on the numerical solution of the Parker transport equation (PTE) describing the non-stationary transport of charged particles in the turbulent medium. We present the nu...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 738; no. 1; pp. 12001 - 12006
Main Authors Wawrzynczak, A., Modzelewska, R.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.08.2016
Subjects
Astronomical models
Charged particles
Cosmic rays
Differential equations
Galactic cosmic rays
Heliosphere
Physics
Stochastic models
Transport equations
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Summary:We present the stochastic model of the galactic cosmic ray (GCR) particles transport in the heliosphere. The model is created based on the numerical solution of the Parker transport equation (PTE) describing the non-stationary transport of charged particles in the turbulent medium. We present the numerical schemes for the strong order integration of the set of the stochastic differential equations (SDEs) corresponding to the non-stationary PTE. Among the employed methods are the strong order Euler-Maruyama, Milstein and stochastic Runge- Kutta methods. We perform the selection of the method resulting in the highest agreement of the model of the 27-day variation of the GCR intensity with the experimental observations.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/738/1/012001