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Is the flow‐aligned component of IMF really able to impact the magnetic field structure of Venusian magnetotail?
Author(s) -
Rong Z. J.,
Stenberg G.,
Wei Y.,
Chai L. H.,
Futaana Y.,
Barabash S.,
Wan W. X.,
Shen C.
Publication year - 2016
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
eISSN - 2169-9402
pISSN - 2169-9380
DOI - 10.1002/2016ja022413
Subject(s) - venus , interplanetary magnetic field , current sheet , magnetic field , physics , flow (mathematics) , heliospheric current sheet , current (fluid) , geophysics , displacement (psychology) , component (thermodynamics) , astrophysics , mechanics , solar wind , magnetohydrodynamics , astrobiology , psychology , quantum mechanics , psychotherapist , thermodynamics
An earlier statistical survey suggested that the flow‐aligned component of upstream interplanetary magnetic field (IMF) may play an important role in controlling the lobe asymmetries of the Venusian magnetotail. The tail current sheet would be displaced and the magnetic field configuration would show asymmetries with respect to the current sheet. The asymmetries are expected to be more evident when the flow‐aligned component becomes dominant. Here with carefully selected cases as well as a statistical study based on Venus Express observations in the near‐Venus tail, we show that the lobe asymmetries of the magnetic field as well as the displacement of the current sheet are common characteristics of the Venusian magnetotail. However, the asymmetries and the displacement of the current sheet do not show a significant dependence on the flow‐aligned component of the IMF. Our results suggest that the flow‐aligned component of IMF cannot penetrate into the near magnetotail to impact the magnetic field structure.