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Properties of Interplanetary Fast Shocks Close to the Martian Environment

Abstract : Magnetic field and plasma measurements from the Mars Atmosphere and Volatile EvolutioN mission in orbit around Mars are analyzed for interplanetary fast shock properties and drivers from 2014 October to 2018 November. We identified 52 fast shocks, including 39 fast forward (FF) shocks and 13 fast reverse (FR) shocks. Most (79%) of the FF shocks are driven by stream interaction regions (SIRs) with only a few cases being driven by interplanetary coronal mass ejections, and all of the FR shocks are driven by SIRs. A total of 92% of the identified shocks are quasi-perpendicular shocks. On average, the shock strengths of SIR-driven forward and reverse shocks are comparable, and they are greater than that of ICME-driven forward shocks. The shock strengths show no systematic dependence on the shock locations relative to the Martian bow shock. We find no evidence that the shock shapes are affected by Mars and its bow shock as an obstacle in the propagating medium. The results can help us understand the nature of interplanetary shocks propagating in different environments.
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Submitted on : Thursday, May 19, 2022 - 12:10:11 PM
Last modification on : Wednesday, June 1, 2022 - 4:03:16 AM

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Hui Huang, Jianpeng Guo, Christian Mazelle, Emmanuel Penou, Haibo Lin, et al.. Properties of Interplanetary Fast Shocks Close to the Martian Environment. The Astrophysical Journal, 2021, 914, ⟨10.3847/1538-4357/abf82b⟩. ⟨insu-03672429⟩

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