Data driven analysis of cosmic rays in the heliosphere: diffusion of cosmic protons

被引：0
作者：
Nicola Tomassetti
Bruna Bertucci
Federico Donnini
Maura Graziani
Emanuele Fiandrini
Behrouz Khiali
Alejandro Reina Conde
机构：
[1] University of Perugia,Department of Physics and Geology
[2] INFN - Sezione di Perugia,undefined
[3] INFN - Sezione di Roma Tor Vergata,undefined
[4] INFN - Sezione di Bologna,undefined
来源：
Rendiconti Lincei. Scienze Fisiche e Naturali | 2023年 / 34卷
关键词：
Astroparticle physics; Cosmic rays; Heliosphere; Diffusion;
D O I：
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中图分类号：
学科分类号：
摘要：
Understanding the time-dependent relationship between the Sun’s variability and cosmic rays (GCR) is essential for developing predictive models of energetic radiation in space. When traveling inside the heliosphere, GCRs are affected by magnetic turbulence and solar wind disturbances which result in the so-called solar modulation effect. To investigate this phenomenon, we have performed a data-driven analysis of the temporal dependence of the GCR flux over the solar cycle. With a global statistical inference of GCR data collected in space by AMS-02 and PAMELA on monthly basis, we have determined the rigidity and time dependence of the GCR diffusion mean free path. Here we present our results for GCR protons, we discuss their interpretation in terms of basic processes of particle transport and their relations with the dynamics of the heliospheric plasma.
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页码：333 / 338
页数：5
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