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  • Presentation | SH34A: Collisionless Shocks in Heliospheric and Astrophysical Plasmas and Their Effects on Planetary Magnetospheres II Oral
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  • SH34A-04: Role of ULF Waves in Reforming the Martian Bow Shock (highlighted)
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Author(s):
Chi Zhang, Boston University (First Author, Presenting Author)
Chuanfei Dong, Boston University
Terry Liu, University of California Los Angeles
Christian Mazelle, University Paul Sabatier Toulouse III
Savvas Raptis, Johns Hopkins University Applied Physics Laboratory
Hongyang Zhou, Boston University
Jacob Fruchtman, University of Iowa
Jasper Halekas, University of Iowa
Jinghuan Li, IRF Swedish Institute of Space Physics Uppsala
Kathleen Hanley, Space Sciences Laboratory, University of California Berkeley
Shannon Curry, University of Colorado Boulder
David Mitchell, Space Sciences Laboratory, University of California Berkeley
Xinmin Li, Boston University


The Sun continuously emits a high-speed plasma flow into interplanetary space, known as the solar wind. When this solar wind encounters Mars, a bow shock forms in front of Mars, decelerating and heating the incoming solar wind. This bow shock plays a pivotal role in mediating interactions between the solar wind and Mars. The bow shock may undergo cyclical reformations, meaning that the shock is periodically re-established over time. In this study, we utilize observations from spacecraft to study the Martian bow shock reformation. We discovered that the reformation processes of the Martian bow shock exhibit distinctive characteristics not seen at other planets. Specifically, we show that shock reformation, typically restricted to only parts of the shock at other planets, may occur throughout the entire Martian bow shock and under a wider range of conditions. Our findings suggest that the Martian bow shock serves as an uniquely valuable laboratory for studying shock phenomena and the underlying fundamental plasma physics.



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