High-Speed Jets in Earth’s Magnetosheath Downstream of the Quasi-Parallel Shock: A Two-Dimensional Global Hybrid Simulation
- 1CAS Key Lab of Geospace Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China
- 2CAS Center for Excellence in Comparative Planetology, Hefei, China
- 3Physics Department, Auburn University, Auburn, AL, USA
- 4Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, China
High-speed jets (HSJs) occur frequently in Earth’s magnetosheath downstream of the quasi-parallel bow shock. They have great impacts on the magnetosheath and the magnetosphere. Using a two-dimensional global hybrid simulation, we investigate the formation and evolution of the HSJs with an IMF cone angle of 0°. The quasi-parallel shock is near the subsolar point, and the HSJs begin to appear in the quasi-parallel magnetosheath with a parallel (perpendicular) scale size of about 1RE (0.2RE). These HSJs then converge, leading to the formation of a large-scale HSJ with a parallel (perpendicular) scale size of 6RE (1.2RE). Some long HSJs, with a large parallel but small perpendicular scale size, are formed at the quasi-parallel bow shock and extend toward the quasi-perpendicular magnetosheath along with the background magnetosheath flow. Moreover, these long HSJs can cause filamentary structures in the magnetosheath.
How to cite: Guo, J., Lu, S., Lu, Q., Lin, Y., Wang, X., Hao, Y., Huang, K., Wang, R., and Gao, X.: High-Speed Jets in Earth’s Magnetosheath Downstream of the Quasi-Parallel Shock: A Two-Dimensional Global Hybrid Simulation, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-3354, https://doi.org/10.5194/egusphere-egu22-3354, 2022.
