English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Sources, sinks and transport of energetic electrons near Saturn's main rings

Roussos, E., Kollmann, P., Krupp, N., Paranicas, C., Dialynas, K., Jones, G. H., et al. (2019). Sources, sinks and transport of energetic electrons near Saturn's main rings. Geophysical Research Letters, 46(7), 3590-3598. doi:10.1029/2018GL078097.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0003-7DD6-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-FD7B-4
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Roussos, Elias1, Author              
Kollmann, P., Author
Krupp, Norbert1, Author              
Paranicas, C., Author
Dialynas, K., Author
Jones, G. H., Author
Mitchell, D. G., Author
Krimigis, S. M., Author
Cooper, J. F., Author
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

Content

show
hide
Free keywords: Saturn; Radiation belts; Rings; Corotating Interaction regions; Galactic cosmic rays; Convection
 MPIS_PROJECTS: CASSINI: MIMI
 MPIS_PROJECTS: CASSINI: LEMMS
 Abstract: The inner boundary of Saturn's electron radiation belts, near the planet's A‐ring (∼2.27 Rs), is studied using Cassini's Proximal orbit measurements. We find that variable convective flows transport energetic electrons to the A‐ring, which absorbs them instantaneously, forming the inner belt boundary. These flows are also responsible for a variable and longitudinally asymmetric boundary configuration. Pre‐noon, the boundary oscillates towards and away from the A‐ring with a two‐week period. Post‐noon, it maps persistently near the F‐ring (∼2.32 Rs) and coexists with localized MeV electron intensity enhancements (microbelts). We propose that the microbelts contain electrons in drift resonance with corotation, trapped in local‐time confined trajectories which result from the aforementioned convective flows. The microbelts' collocation with the F‐ring implies either a local, secondary electron production due to Galactic Cosmic Ray collisions with F‐ring dust, or an enhanced resonant electron trapping due to an electrodynamic interaction between the F‐ring and Saturn's magnetosphere.

Details

show
hide
Language(s): eng - English
 Dates: 2019-04-242019
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1029/2018GL078097
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Geophysical Research Letters
  Abbreviation : GRL
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, D.C. : American Geophysical Union
Pages: - Volume / Issue: 46 (7) Sequence Number: - Start / End Page: 3590 - 3598 Identifier: ISSN: 0094-8276
CoNE: https://pure.mpg.de/cone/journals/resource/954925465217