The sheath/ionosphere boundary layer at Venus

K. Szegö, V. D. Shapiro, S. K. Ride, A. F. Nagy, V. I. Shevchenko

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

At Venus the interaction of the shocked solar wind and cold planetary ions takes place in the dayside mantle. The shocked solar wind is a warm, drifting Maxwellian plasma whereas the planetary plasma is cold; the plasma in the mantle is strongly magnetized. The coexistence of these two populations is unstable, and it leads to wave excitations that organize the energy and momentum exchange between the shocked solar wind and the plasma of planetary origin. The source of the free energy is the solar wind. The intensive wave activity seen in the 100 Hz channel of the wave instrument onboard the Pioneer-Venus Orbiter in the dayside mantle region of Venus can be identified as almost electrostatic VLF waves excited by the kinetic branch of the modified two-stream lower hybrid instability. The waves interact with the particles, and the planetary plasma is heated and accelerated outside the ionosphere, close to its upper boundary. This way solar wind scavenges the ionosphere, and planetary ions leave the planetary magnetosphere. A portion of the wave energy is capable to penetrate directly into the ionosphere and heats it.

Original languageEnglish
Pages (from-to)71-74
Number of pages4
JournalAdvances in Space Research
Volume16
Issue number4
DOIs
Publication statusPublished - 1995

Fingerprint

Ionosphere
Venus (planet)
Venus
Solar wind
sheaths
ionospheres
solar wind
boundary layers
ionosphere
Boundary layers
boundary layer
plasma
Plasmas
Earth mantle
mantle
Pioneer Venus 1 spacecraft
planetary magnetospheres
ion
wave excitation
Magnetosphere

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Szegö, K., Shapiro, V. D., Ride, S. K., Nagy, A. F., & Shevchenko, V. I. (1995). The sheath/ionosphere boundary layer at Venus. Advances in Space Research, 16(4), 71-74. https://doi.org/10.1016/0273-1177(95)00210-6

The sheath/ionosphere boundary layer at Venus. / Szegö, K.; Shapiro, V. D.; Ride, S. K.; Nagy, A. F.; Shevchenko, V. I.

In: Advances in Space Research, Vol. 16, No. 4, 1995, p. 71-74.

Research output: Contribution to journalArticle

Szegö, K, Shapiro, VD, Ride, SK, Nagy, AF & Shevchenko, VI 1995, 'The sheath/ionosphere boundary layer at Venus', Advances in Space Research, vol. 16, no. 4, pp. 71-74. https://doi.org/10.1016/0273-1177(95)00210-6
Szegö, K. ; Shapiro, V. D. ; Ride, S. K. ; Nagy, A. F. ; Shevchenko, V. I. / The sheath/ionosphere boundary layer at Venus. In: Advances in Space Research. 1995 ; Vol. 16, No. 4. pp. 71-74.
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