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Asymmetric deformation of the Earth's magnetosphere under low Alfvén Mach number solar wind: Observations and MHD simulation
Kasahara, Satoshi; Lavraud, Benoit; Saito, Yoshifumi +5 more
The density of the solar wind plasma near the Earth's magnetosphere sometimes decreases to only several per cent of the usual value, and such density extrema result in a significant reduction of the dynamic pressure and Alfvén Mach number (