Role of ULF Waves in Reforming the Martian Bow Shock


Journal article


Chi Zhang, C. Dong, Terry Z. Liu, C. Mazelle, S. Raptis, Hongyang Zhou, J. Fruchtman, J. Halekas, Jing‐Huan Li, K. Hanley, S. Curry, D. Mitchell, Xinmin Li
2025

Semantic Scholar DOI
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APA   Click to copy
Zhang, C., Dong, C., Liu, T. Z., Mazelle, C., Raptis, S., Zhou, H., … Li, X. (2025). Role of ULF Waves in Reforming the Martian Bow Shock.


Chicago/Turabian   Click to copy
Zhang, Chi, C. Dong, Terry Z. Liu, C. Mazelle, S. Raptis, Hongyang Zhou, J. Fruchtman, et al. “Role of ULF Waves in Reforming the Martian Bow Shock” (2025).


MLA   Click to copy
Zhang, Chi, et al. Role of ULF Waves in Reforming the Martian Bow Shock. 2025.


BibTeX   Click to copy

@article{chi2025a,
  title = {Role of ULF Waves in Reforming the Martian Bow Shock},
  year = {2025},
  author = {Zhang, Chi and Dong, C. and Liu, Terry Z. and Mazelle, C. and Raptis, S. and Zhou, Hongyang and Fruchtman, J. and Halekas, J. and Li, Jing‐Huan and Hanley, K. and Curry, S. and Mitchell, D. and Li, Xinmin}
}

Abstract

Understanding the nature of planetary bow shocks is beneficial for advancing our knowledge of solar wind interactions with planets and fundamental plasma physics processes. Here, we utilize data from the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft to investigate the Martian bow shock, revealing its distinctive characteristics within our solar system. We find that unlike other planetary shocks, the reformation of Mars's bow shock driven by the ultra‐low frequency (ULF) waves is more global and less dependent on shock geometries. This distinct behavior is attributed to the broad distribution of ULF waves in the upstream region at Mars, generated not only by shock‐reflected ions but also by planetary protons. Additionally, during the reformation process, the amplitude of the ULF waves and the steepened structures are significantly large. This results in the newly reformed shock exceeding the original one, a phenomenon not observed at other planets under similar shock conditions. Therefore, the ULF waves significantly enhance the complexity of shock dynamics and play a more substantial role at Mars compared to other planets.