Enceladus auroral hiss emissions during Cassini's grand finale
File(s)Sulaiman_et_al-2018-Geophysical_Research_Letters.pdf (2.11 MB)
Published version
Author(s)
Type
Journal Article
Abstract
Cassini's Radio and Plasma Wave Science (RPWS) instrument detected intense auroral hiss emissions during one of its perikrone passes of the Grand Finale orbits. The emissions were detected when Cassini traversed a flux tube connected to Enceladus' orbit (L‐shell = 4) and at a time when both the spacecraft and the icy moon were in similar longitudes. Previous observations of auroral hiss related to Enceladus were made only during close flybys and here we present the first observation of such emissions close to Saturn. Further, ray‐tracing analysis shows the source location at a latitude of 63°, in excellent agreement with earlier UVIS observations of Enceladus' auroral footprint by Pryor et al. (2011, https://doi.org/10.1038/nature09928). The detection has been afforded exclusively by the Grand Finale phase, which enabled sampling of Enceladus' high‐latitude flux tube near Saturn. This result provides new insight into the spatial extent of the electrodynamic interaction between Saturn and Enceladus.
Date Issued
2018-08-16
Date Acceptance
2018-06-01
Citation
Geophysical Research Letters, 2018, 45 (15), pp.7347-7353
ISSN
0094-8276
Publisher
American Geophysical Union
Start Page
7347
End Page
7353
Journal / Book Title
Geophysical Research Letters
Volume
45
Issue
15
Copyright Statement
©2018 American Geophysical Union. All Rights Reserved.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000443129500013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Geosciences, Multidisciplinary
Geology
Saturn
Enceladus
auroral hiss
IO
Publication Status
Published
Date Publish Online
2018-08-14