Ion acceleration in cometary plasma tails

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

The curious bursts of hot ions in the inner coma of comet Halley detected by plasma instruments on the Giotto probe remain unexplained. In the present paper we discuss the possible contribution from current sheet acceleration in the near‐tail region of this comet. If the transformation of the tear‐drop shape of the magnetic field free boundary of the ionospheric contact surface to an elongated current sheet is accompanied by the formation of a magnetic neutral line, the introduction of a cross‐tail electric field could be effective in generating keV ions near the neutral line and the current sheet. The beaming of these accelerated ions towards the inner coma will likely result in the production of a secondary hot ion component with degraded energies from collisional thermalization. Such an “auroral” activity could play an important role in the energetics, ionization and dynamics of cometary ionospheres.

原文???core.languages.en_GB???
頁(從 - 到)1327-1330
頁數4
期刊Geophysical Research Letters
19
發行號13
DOIs
出版狀態已出版 - 6 7月 1992

指紋

深入研究「Ion acceleration in cometary plasma tails」主題。共同形成了獨特的指紋。

引用此