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AMS-02时代银河宇宙射线时间特征研究

Examining Temporal Characteristics of GCRs in the AMS-02 era

Cheng-Rui Zhu, Yu-Lu Liu, Mei-Juan Wang, Tian-Hao Li, Yi-Hua Zhu, Kai-Kai Duan

arXiv 2609.13633首次发表:更新:

发表机构

Anhui Normal University; Purple Mountain Observatory, Chinese Academy of Sciences(安徽师范大学; 中国科学院紫金山天文台)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

本研究利用AMS-02高精度时间分辨通量数据,在修正力场近似框架下验证了Li至O核与质子、氦具有一致的太阳调制参数,并据此预测了2011-2020年Ne、Mg、Si的每日通量。

AI 中文摘要

银河宇宙射线(GCRs)的能谱是研究其天体物理起源及在星际介质中传播机制的关键探针。在塑造观测能谱的关键物理过程中,由湍流日球层磁场和太阳风变化驱动的太阳调制,在改变内日球层内GCRs通量方面起着主导作用。AMS-02最近发布的He、Li、Be、B、C、N和O元素随时间变化的通量测量数据,为研究太阳调制现象提供了前所未有的精度。在本研究中,我们证明在包含随刚性变化的调制势的修正力场近似(FFA)框架内,Li、Be、B、C、N和O原子核表现出与质子(p)和He一致的太阳调制参数。通过假设具有相同电荷符号的GCRs共享太阳调制参数,我们进一步预测了2011年至2020年Ne、Mg和Si的每日通量。

英文摘要

The energy spectra of Galactic cosmic rays (GCRs) serve as critical probes of their astrophysical origins and propagation mechanisms through the interstellar medium. Among the key physical processes shaping the observed spectra, solar modulation, driven by turbulent heliospheric magnetic fields and the variability of the solar wind, plays a dominant role in modifying GCR fluxes within the inner heliosphere. The recent release of time-dependent flux measurements for He, Li, Be, B, C, N, and O by AMS-02 provides unprecedented precision to investigate solar modulation phenomena. In this study, we demonstrate that Li, Be, B, C, N, and O nuclei exhibit solar modulation parameters consistent with those of protons (p) and He within a modified force-field approximation (FFA) framework incorporating rigidity-dependent modulation potentials. By positing that GCRs with the same charge-sign sharing the solar modulation parameters, we further forecast daily fluxes of Ne, Mg and Si from 2011 to 2020.

Comments16 pages, 9 figures, accepted by ApJ

DOI:10.3847/1538-4357/aea4b3

论文原文

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