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The role of the magnetosonic Mach number on the evolution of Kelvin-Helmholtz vortices

  • F. Palermo (a1), M. Faganello (a2), F. Califano (a3), F. Pegoraro (a3) and O. Le Contel (a4)...

Abstract

We review the main results of our previous works, in which we have investigated the development of the Kelvin-Helmholtz (KH) instability in the transitional regime from sub-magnetosonic to super-magnetosonic by varying the solar wind velocity, in conditions typical of those observed at the Earth’s magnetopause flanks. In super-magnetosonic regimes, we show that the vortices produced by the development of the KH instability act as an obstacle in the plasma flow and may generate quasi-perpendicular magnetosonic shock structures extending well outside the region of velocity shear.

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Copyright

References

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[1]Faganello, M., et al., 2009, New J. Phys., 11 , 063008
[2]Fairfield, D.H., et al., 2000, J. Geophys. Res., 105 , 21159
[3]Lele, S.K., 1992, J. Comput. Phys., 103 , 16
[4]Miura, A., 1992, J. Geophys. Res., 97 , 10655
[5]Otto, A., & Fairfield, D.H., 2000, J. Geophys. Res., 105 , 21175
[6]Palermo, F., et al., 2011, J. Geophys. Res., 116 , A04223
[7]Palermo, F., et al., 2011, Ann. Geophys., 29 , 1169
[8]Spreiter, J.R., et al., 1966, Planet. Space Sci., 14 , 223
[9]Valentini, F., et al., 2007, J. Comp. Phys., 225 , 753

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