Volume 44 Issue 6
Dec.  2024
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Article Navigation >  Chinese Journal of Space Science  > 2024  >  44(6): 979-987 Open Access
OUYANG Wanxin, YANG Zhongwei, GUO Xiaocheng, LI Hui, LU Quanming, WANG Chi. Magnetosheath Jet-driven Bow Waves and Their Soft X-ray Imaging: Hybrid and PIC Simulations (in Chinese). Chinese Journal of Space Science, 2024, 44(6): 979-987 doi: 10.11728/cjss2024.06.2024-yg28
Citation: OUYANG Wanxin, YANG Zhongwei, GUO Xiaocheng, LI Hui, LU Quanming, WANG Chi. Magnetosheath Jet-driven Bow Waves and Their Soft X-ray Imaging: Hybrid and PIC Simulations (in Chinese). Chinese Journal of Space Science, 2024, 44(6): 979-987 doi: 10.11728/cjss2024.06.2024-yg28
shu

Magnetosheath Jet-driven Bow Waves and Their Soft X-ray Imaging: Hybrid and PIC Simulations

doi: 10.11728/cjss2024.06.2024-yg28 cstr: 32142.14.cjss.2024-yg28
  • 1.

    National Space Science Center, Chinese Academy of Sciences, Beijing 100190

  • 2.

    University of Chinese Academy of Sciences, Beijing 101408

  • 3.

    Deep Space Exploration Laboratory /University of Science and Technology of China, Hefei 230026

  • Received Date: 2024-10-12
  • Rev Recd Date: 2024-10-29
    • Available Online: 2024-11-13
    Abstract
  • Recent statistics by MMS indicate that magnetosheath High-Speed Jets (HSJs) are typically observed downstream from the quasi-parallel bow shock. A fraction of them can drive magneto sheath bow waves. This paper primarily utilizes two-dimensional hybrid simulations to explore the characteristics of these HSJs and Bow Waves (BWs) under various parameters, including different shock normal angles (θBn) (which is the angle between the shock normal direction and the background magnetic field B0), and whether B0 falls within or outside the simulation plane. By comparing the results of Particle-in-Cell (PIC) simulations with hybrid simulations under similar setups, it is evident that PIC simulations not only reproduce the results of hybrid simulations but also reveal a richer multiscale magnetic island structure in HSJ and bow wave regions. These magnetic islands range in size from less than 1 ion inertial length (di0) to more than 10 di0. Based on simulation data and hydrogen exosphere model, a quantitative assessment has been conducted of the soft X-ray emission intensity in the region from the bow shock to the magnetopause, specifically targeting the China-Europe SMILE space science satellite mission scheduled for launch in September 2025.

     

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