A new pathway of saturnian ring-ionosphere coupling via charged nanograins

Chin Min Liu, Wing Huen Ip

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

From a re-examination of the trajectories of small charged grains in the vicinity of the Saturnian rings, it is shown that the orbital motion of positively charged grains with a charge-to-mass ratio on the order of 10 -6 e amu-1 could allow the injection of water material into the equatorial atmosphere. Thus, a mechanism of ionospheric depletion in the equatorial region is provided, as indicated by the Cassini radio occultation measurements.

Original languageEnglish
Article number34
JournalAstrophysical Journal
Volume786
Issue number1
DOIs
StatePublished - 1 May 2014

Keywords

  • planets and satellites: atmospheres
  • planets and satellites: magnetic fields
  • planets and satellites: rings

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