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- Title
Cassini/MIMI Observations on the Dungey Cycle Reconnection and Kelvin‐Helmholtz Instability in Saturn's Magnetosphere.
- Authors
Dialynas, Konstantinos
- Abstract
A new composite analysis of ∼13 years of Cassini's Charge Energy Mass Spectrometer measurements, presented by Allen et al. (2018, https://doi.org/10.1029/2018JA025262), suggests that the asymmetrically distributed suprathermal He++ in Saturn's magnetosphere is due to Dungey cycle related reconnection and Kelvin‐Helmholtz instabilities that provide paths to the solar wind plasma to reach distances even deep in the inner magnetosphere and accumulate in the ring current region, together with the internally sourced plasma. The results provide a significant addition to the ongoing discussions concerning the contribution of the solar wind input to the dynamics of an otherwise rotationally driven system, such as Saturn's magnetosphere. Key Points: Detection of He++ in Saturn's magnetosphere points to solar wind entry due to Dungey cycle reconnection and Kelvin‐Helmholtz instability
- Subjects
MAGNETOSPHERE of Saturn; SOLAR wind; RINGS of Saturn; SOLAR activity; MASS spectrometry
- Publication
Journal of Geophysical Research. Space Physics, 2018, Vol 123, Issue 9, p7271
- ISSN
2169-9380
- Publication type
Article
- DOI
10.1029/2018JA025840