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Asymmetry Of Plasma Fluxes At Mars. Aspera-3 Observations And Hybrid Simulations

机译:等离子通量在火星上的不对称性。 Aspera-3观测和混合模拟

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The asymmetry of fluxes of solar wind and planetary ions is studied by using the ASPERA-3 observations onboard the Mars Express spacecraft in February 2004 to March 2006. Due to the small scale of the Martian magnetosphere and its induced origin, the flow pattern near Mars is sensitive to the directions of the interplanetary magnetic and electric (- V × B) fields. Asymmetry of the magnetic field draping produces an asymmetry in plasma flows in the plane containing the IMF. The crustal magnetic fields on Mars also influence the flow pattern. Scavenging of planetary ions is less efficient in the regions of strong crustal magnetization and therefore the escape fluxes of planetary ions in the southern hemisphere are smaller. The results of the observations are compared to simulations based on a 3D hybrid model with several ion species.
机译:利用2004年2月至2006年3月在火星快车上的ASPERA-3观测资料研究了太阳风和行星离子通量的不对称性。由于火星磁层的规模小和它的诱发源,火星附近的流动方式对星际磁场和电场(-V×B)的方向敏感。磁场披覆的不对称性会在包含IMF的平面中的等离子体流中产生不对称性。火星上的地壳磁场也会影响流型。在强地壳磁化区域,清除行星离子的效率较低,因此,南半球行星离子的逸出通量较小。将观察结果与基于具有多种离子种类的3D混合模型的模拟进行比较。

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