Sun, X.; Zheng, S.; Shi, Z.; Liu, B.; Yang, R. Low-energy Cosmic Rays and Associated MeV Gamma-ray Emissions in the Protoplanetary System. Preprints2024, 2024070344. https://doi.org/10.20944/preprints202407.0344.v1
APA Style
Sun, X., Zheng, S., Shi, Z., Liu, B., & Yang, R. (2024). Low-energy Cosmic Rays and Associated MeV Gamma-ray Emissions in the Protoplanetary System. Preprints. https://doi.org/10.20944/preprints202407.0344.v1
Chicago/Turabian Style
Sun, X., Bing Liu and Ruizhi Yang. 2024 "Low-energy Cosmic Rays and Associated MeV Gamma-ray Emissions in the Protoplanetary System" Preprints. https://doi.org/10.20944/preprints202407.0344.v1
Abstract
Low-energy cosmic rays (LECRs) play a crucial role in the formation of planetary systems, and detecting and reconstructing the properties of early LECRs is essential for understanding the mechanisms of planetary system formation. Given that LECRs interact with the surrounding medium to produce nuclear de-excitation line emissions with energy mainly within 0.1–10 MeV, which are unaffected by stellar wind modulation, these gamma-ray emissions can accurately reflect the properties of LECRs. This study introduces an innovative method for using gamma-ray emissions to infer LECR properties. We employed the Parker transport equation to simulate the propagation and spectral evolution of LECRs in a protoplanetary disk and calculated the characteristic gamma-ray emissions resulting from interactions between LECRs and disk material. These gamma-ray emissions encapsulate the spectral information of LECRs, providing a powerful tool to reconstruct the cosmic ray environment at that time. This method, supported by further theoretical developments and observations, will fundamentally enhance our understanding of the impact of CRs on the origin and evolution of planetary systems and address significant scientific questions regarding the cosmic ray environment at the origin of life.
Copyright:
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