The 2022 February 15 Solar Energetic Particle Event at Mars: A Synergistic Study Combining Multiple Radiation Detectors on the Surface and in Orbit of Mars With Models - UTU Research Portal

A1 Refereed original research article in a scientific journal

The 2022 February 15 Solar Energetic Particle Event at Mars: A Synergistic Study Combining Multiple Radiation Detectors on the Surface and in Orbit of Mars With Models

Authors: Zhang, J.; Guo, J.; Zhang, Y.; Cao, Y.; Dobynde, M.I.; Li, C.; Yu, Y.; Wang, Y.; Tang, S.; Qian, Y.; Zhao, H.; Sun, Z.; Wang, Y.; Wimmer-Schweingruber, R.F.

Publisher: John Wiley and Sons Inc

Publication year: 2024

Journal: Geophysical Research Letters

Journal name in source: Geophysical Research Letters

Article number: e2024GL111775

Volume: 51

Issue: 19

ISSN: 0094-8276

eISSN: 1944-8007

DOI: https://doi.org/10.1029/2024GL111775

Web address : https://doi.org/10.1029/2024GL111775

Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/458939293

Abstract

On 2022-02-15, solar eruptions caused one of the most intensive Solar Particle Events (SPEs) in Solar Cycle 25 observed at various heliospheric locations. This study focuses on the enhancements of energetic proton flux observed by multiple detectors located at the orbit and on the surface of Mars. We carry out the first analysis by the Mars Energetic Particle Analyzer (MEPA) instrument on board the Chinese Tianwen-1 spacecraft (TW-1) at Mars orbit which also serves to validate the instrument's capability to measure protons of up to 100 MeV. We reconstruct the event spectrum up to 1 GeV and further model the event doses at Mars's orbit and surface which are then validated against the corresponding dosimetry data. Our study utilizes all available radiation detectors at Mars, advances our understanding of Mars's radiation environment induced by large SPEs, and emphasizes the necessity of continuous and synergistic radiation monitoring at Mars.

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Geophysical Research Letters - 2024 - Zhang - The 2022 February 15 Solar Energetic Particle Event at Mars A Synergistic.pdf

Funding information in the publication:
We acknowledge the Key Research Program and the Strategic Priority Program of the Chinese Academy of Sciences (Grant ZDBS-SSW-TLC00103, XDB41000000) and the National Natural Science Foundation of China (42188101, 42074222 and 42130204). RAD is supported by NASA (HEOMD) under JPL subcontract 1273039 to Southwest Research Institute, and in Germany by the German space Agency (50QM0501, 50QM1201, and 50QM1701) to the Christian Albrechts University, Kiel.