Staniland, NR;
Dougherty, MK;
Masters, A;
Achilleos, N;
(2021)
The Cushion Region and Dayside Magnetodisc Structure at Saturn.
Geophysical Research Letters
, 48
(6)
, Article e2020GL091796. 10.1029/2020gl091796.
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Abstract
A sustained quasi‐dipolar magnetic field between the current sheet outer edge and the magnetopause, known as a cushion region, has previously been observed at Jupiter, but not yet at Saturn. Using the complete Cassini magnetometer data, the first evidence of a cushion region forming at Saturn is shown. Only five examples of a sustained cushion are found, revealing this phenomenon to be rare. Four of the cushion regions are identified at dusk and one pre‐noon. It is suggested that greater heating of plasma post‐noon coupled with the expansion of the field through the afternoon sector makes the disc more unstable in this region. These results highlight a key difference between the Saturn and Jupiter systems.
| Type: | Article |
|---|---|
| Title: | The Cushion Region and Dayside Magnetodisc Structure at Saturn |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2020gl091796 |
| Publisher version: | https://doi.org/10.1029/2020GL091796 |
| Language: | English |
| Additional information: | © 2021. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Cushion, heating, instability, magnetodisc, magnetosphere Saturn |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10124811 |
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