Giant flux ropes observed in the magnetized ionosphere at Venus

T. L. Zhang, W. Baumjohann, Teh Wai Leong, R. Nakamura, C. T. Russell, J. G. Luhmann, K. H. Glassmeier, E. Dubinin, H. Y. Wei, A. M. Du, Q. M. Lu, S. Wang, M. Balikhin

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The Venus ionospheric response to solar and solar wind variations is most evident in its magnetic field properties. Early Pioneer Venus observations during the solar maximum revealed that the Venus ionosphere exhibits two magnetic states depending on the solar wind dynamic pressure conditions: magnetized ionosphere with large-scale horizontal magnetic field; or unmagnetized ionosphere with numerous small-scale thin structures, so-called flux ropes. Here we report yet another magnetic state of Venus' ionosphere, giant flux ropes in the magnetized ionosphere, using Venus Express magnetic field measurements during solar minimum. These giant flux ropes all have strong core fields and diameters of hundreds of kilometers, which is about the vertical dimension of the ionosphere. This finding represents the first observation of these giant flux ropes at Venus. The cause of these giant flux ropes remains unknown and speculative.

Original languageEnglish
Article numberL23103
JournalGeophysical Research Letters
Volume39
Issue number23
DOIs
Publication statusPublished - 16 Dec 2012
Externally publishedYes

Fingerprint

Venus (planet)
Venus
ionospheres
ionosphere
magnetic field
solar wind
wind variations
magnetic fields
wind pressure
dynamic pressure
ionospherics
causes

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geophysics

Cite this

Zhang, T. L., Baumjohann, W., Wai Leong, T., Nakamura, R., Russell, C. T., Luhmann, J. G., ... Balikhin, M. (2012). Giant flux ropes observed in the magnetized ionosphere at Venus. Geophysical Research Letters, 39(23), [L23103]. https://doi.org/10.1029/2012GL054236

Giant flux ropes observed in the magnetized ionosphere at Venus. / Zhang, T. L.; Baumjohann, W.; Wai Leong, Teh; Nakamura, R.; Russell, C. T.; Luhmann, J. G.; Glassmeier, K. H.; Dubinin, E.; Wei, H. Y.; Du, A. M.; Lu, Q. M.; Wang, S.; Balikhin, M.

In: Geophysical Research Letters, Vol. 39, No. 23, L23103, 16.12.2012.

Research output: Contribution to journalArticle

Zhang, TL, Baumjohann, W, Wai Leong, T, Nakamura, R, Russell, CT, Luhmann, JG, Glassmeier, KH, Dubinin, E, Wei, HY, Du, AM, Lu, QM, Wang, S & Balikhin, M 2012, 'Giant flux ropes observed in the magnetized ionosphere at Venus', Geophysical Research Letters, vol. 39, no. 23, L23103. https://doi.org/10.1029/2012GL054236
Zhang TL, Baumjohann W, Wai Leong T, Nakamura R, Russell CT, Luhmann JG et al. Giant flux ropes observed in the magnetized ionosphere at Venus. Geophysical Research Letters. 2012 Dec 16;39(23). L23103. https://doi.org/10.1029/2012GL054236
Zhang, T. L. ; Baumjohann, W. ; Wai Leong, Teh ; Nakamura, R. ; Russell, C. T. ; Luhmann, J. G. ; Glassmeier, K. H. ; Dubinin, E. ; Wei, H. Y. ; Du, A. M. ; Lu, Q. M. ; Wang, S. ; Balikhin, M. / Giant flux ropes observed in the magnetized ionosphere at Venus. In: Geophysical Research Letters. 2012 ; Vol. 39, No. 23.
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