Particle Radiation Environment in the Heliosphere: Status, limitations and recommendations

Guo, Jingnan, Wang, Bingbing, Whitman, Kathryn, Plainaki, Christina, Zhao, Lingling, Bain, Hazel M., Cohen, Christina, Dalla, Silvia orcid iconORCID: 0000-0002-7837-5780, Dumbovic, Mateja et al (2023) Particle Radiation Environment in the Heliosphere: Status, limitations and recommendations. (Submitted)

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Official URL: https://doi.org/10.48550/arXiv.2308.11926

Abstract

Space weather is a multidisciplinary research area connecting scientists from across heliophysics domains seeking a coherent understanding of our space environment that can also serve modern life and society's needs. COSPAR's ISWAT (International Space Weather Action Teams) 'clusters' focus attention on different areas of space weather study while ensuring the coupled system is broadly addressed via regular communications and interactions. The ISWAT cluster "H3: Radiation Environment in the Heliosphere" (this https URL) has been working to provide a scientific platform to understand, characterize and predict the energetic particle radiation in the heliosphere with the practical goal of mitigating radiation risks associated with areospace activities, satellite industry and human space explorations. In particular, present approaches help us understand the physical phenomena at large, optimizing the output of multi-viewpoint observations and pushing current models to their limits.
In this paper, we review the scientific aspects of the radiation environment in the heliosphere covering four different radiation types: Solar Energetic Particles (SEPs), Ground Level Enhancement (GLE, a type of SEP events with energies high enough to trigger the enhancement of ground-level detectors), Galactic Cosmic Rays (GCRs) and Anomalous Cosmic Rays (ACRs). We focus on related advances in the research community in the past 10-20 years and what we still lack in terms of understanding and predictive capabilities. Finally we also consider some recommendations related to the improvement of both observational and modeling capabilities in the field of space radiation environment.


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