Average dimension and magnetic structure of the distant Venus magnetotail

Details Average dimension and magnetic structure of the distant Venus magnetotail Average dimension and magnetic structure of the distant Venus magnetotail

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.5589s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, May 1, 1986, p. 5589-5604.

Physics

47

Interplanetary Magnetic Fields, Magnetic Field Configurations, Planetary Magnetospheres, Venus Atmosphere, Geomagnetic Tail, Lines Of Force, Magnetic Signatures, Morphology, Pioneer Venus 1 Spacecraft, Planetary Ionospheres, Wakes, Venus, Magnetotail, Structure, Magnetic Fields, Size, Geometry, Pvo, Pioneer Venus Orbiter, Wakes, Magnetic Properties, Altitude, Interaction, Spacecraft Observations, Orbiter Magnetometer, Omag

Scientific paper

The authors report the first major statistical investigation of the far wake of an unmagnetized object embedded in the solar wind. The investigation is based on Pioneer Venus Orbiter magnetometer data from 70 crossings of the Venus wake at altitudes between 5 and 11 Venus radii during reasonably steady IMF conditions. The authors find that Venus has a well-developed tail, flaring with altitude and possibly broader in the direction parallel to the IMF cross-flow component. Tail lobe field polarities and the direction of the cross-tail field are consistent with tail accretion from the solar wind. Average values for the cross-tail field (2 nT) and the distant tail flux (3 MWb) indicate that most distant tail field lines close across the center of the tail and are not rooted in the Venus ionosphere. The authors illustrate their findings in a three-dimensional schematic.

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