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  • Wang, MengmengShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China; Department of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China (author)

Statistical analysis of whistler precursors upstream of foreshock transient shocks : MMS observations

  • Article/chapterEnglish2024

Publisher, publication year, extent ...

  • American Geophysical Union (AGU),2024
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:umu-224079
  • https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-224079URI
  • https://doi.org/10.1029/2023GL105617DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Using the high-time-resolution data from the Magnetospheric Multiscale mission, precursor waves upstream of foreshock transient (FT) shocks are statistically investigated using the four-spacecraft timing method. The wave frequencies and wave vectors determined in the plasma rest frame (PRF) are shown to follow the cold plasma dispersion relation for whistler waves. Combining with the feature of the right-hand polarization in the PRF, the precursors are identified as whistler-mode waves around the lower hybrid frequency. The occurrence of whistler precursors is independent of the Alfvén Mach number and the FT shock normal angle. More importantly, all the whistler precursors have group velocities pointing upstream in the shock frame, suggesting the dispersive radiation to be a possible generation mechanism. The study improves the understanding of not only the whistler precursors but also the overall FT shock dynamics.

Subject headings and genre

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  • Liu, Terry Z.Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, Los Angeles, United States (author)
  • Zhang, HuiShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China (author)
  • Liu, KaijunDepartment of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China (author)
  • Shi, QuanqiShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China (author)
  • Guo, RuilongShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China (author)
  • Tian, AnminShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China (author)
  • Sun, WeijieSpace Sciences Laboratory, University of California, Berkeley, CA, Berkeley, United States (author)
  • Shen, Xiao-ChenCenter for Space Physics, Boston University, MA, Boston, United States (author)
  • Wu, SiyuanDepartment of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China; LESIA, Observatoire de Paris, CNRS, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France (author)
  • Degeling, Alexander W.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China (author)
  • Wang, YanDepartment of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China (author)
  • Bai, Shi-ChenShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China; School of Mathematics and Statistics, Shandong University, Weihai, China (author)
  • Yao, ZhonghuaDepartment of Earth Sciences, The University of Hong Kong, Hong Kong (author)
  • Li, WenyaState Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China (author)
  • Zhang, ShuaiDepartment of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China (author)
  • Pitkänen, Timo,1979-Umeå universitet,Institutionen för fysik,Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China(Swepub:umu)tipi0002 (author)
  • Yao, ShutaoShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China (author)
  • Liu, JiDepartment of Physics, University of Alberta, AB, Edmonton, Canada (author)
  • Cheng, KunDepartment of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China (author)
  • Ma, XiaoShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China (author)
  • Liu, YuqiDepartment of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China (author)
  • Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China; Department of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, ChinaDepartment of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, Los Angeles, United States (creator_code:org_t)

Related titles

  • In:Geophysical Research Letters: American Geophysical Union (AGU)51:80094-82761944-8007

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