Critical ionization velocity effects in the inner coma of comet Halley: Measurements by Vega‐2

A. A. Galeev, K. I. Gringauz, S. I. Klimov, A. P. Remizov, R. Z. Sagdeev, S. P. Savin, A. Yu Sokolov, M. I. Verigin, K. Szegö

Research output: Article

19 Citations (Scopus)

Abstract

Plasma density and plasma wave measurements aboard the "Vega‐2" spacecraft discovered two plasma density enhancements in the inner coma of comet Halley that are accompanied by bursts of plasma waves in the lower‐hybrid frequency range. These events are explained by the critical ionization velocity (CIV) effects of Alfvén. The persistent bursty plasma wave activity and the intermittent plasma density growth toward the cometary nucleus indicate that the CIV effect contributes to the ionization of the cometary gas.

Original languageEnglish
Pages (from-to)845-848
Number of pages4
JournalGeophysical Research Letters
Volume13
Issue number8
DOIs
Publication statusPublished - 1986

Fingerprint

Halley's comet
coma
plasma waves
comet
plasma density
ionization
plasma
bursts
spacecraft
frequency ranges
nuclei
augmentation
gases
effect
gas

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Galeev, A. A., Gringauz, K. I., Klimov, S. I., Remizov, A. P., Sagdeev, R. Z., Savin, S. P., ... Szegö, K. (1986). Critical ionization velocity effects in the inner coma of comet Halley: Measurements by Vega‐2. Geophysical Research Letters, 13(8), 845-848. https://doi.org/10.1029/GL013i008p00845

Critical ionization velocity effects in the inner coma of comet Halley : Measurements by Vega‐2. / Galeev, A. A.; Gringauz, K. I.; Klimov, S. I.; Remizov, A. P.; Sagdeev, R. Z.; Savin, S. P.; Sokolov, A. Yu; Verigin, M. I.; Szegö, K.

In: Geophysical Research Letters, Vol. 13, No. 8, 1986, p. 845-848.

Research output: Article

Galeev, AA, Gringauz, KI, Klimov, SI, Remizov, AP, Sagdeev, RZ, Savin, SP, Sokolov, AY, Verigin, MI & Szegö, K 1986, 'Critical ionization velocity effects in the inner coma of comet Halley: Measurements by Vega‐2', Geophysical Research Letters, vol. 13, no. 8, pp. 845-848. https://doi.org/10.1029/GL013i008p00845
Galeev, A. A. ; Gringauz, K. I. ; Klimov, S. I. ; Remizov, A. P. ; Sagdeev, R. Z. ; Savin, S. P. ; Sokolov, A. Yu ; Verigin, M. I. ; Szegö, K. / Critical ionization velocity effects in the inner coma of comet Halley : Measurements by Vega‐2. In: Geophysical Research Letters. 1986 ; Vol. 13, No. 8. pp. 845-848.
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AU - Savin, S. P.

AU - Sokolov, A. Yu

AU - Verigin, M. I.

AU - Szegö, K.

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