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@article{Southwood:2021:10.1029/2020JA028473,
author = {Southwood, DJ and Cao, H and Shebanits, O and Elsden, T and Hunt, GJ and Dougherty, MK},
doi = {10.1029/2020JA028473},
journal = {Journal of Geophysical Research: Space Physics},
pages = {1--18},
title = {Discovery of Alfven waves planetward of Saturn's rings},
url = {http://dx.doi.org/10.1029/2020JA028473},
volume = {126},
year = {2021}
}

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TY  - JOUR
AB  - Between April and September 2017 in the final stages of the Cassini Saturn Orbiter mission the spacecraft executed 22 orbits passing planetward of the innermost ring, the D-ring. During all periapsis passes oscillations were detected in the azimuthal magnetic field components on typical time scales of a few minutes. We argue that these time-varying magnetic signals detected on the spacecraft are also primarily time-varying in the plasma frame. Furthermore, we show that nearly all signals exhibit a spatial feature, namely a magnetic node near the effective field line equator. We propose that the oscillations are associated with Alfvén waves excited in local field line resonances, most likely driven from global sources.
AU  - Southwood,DJ
AU  - Cao,H
AU  - Shebanits,O
AU  - Elsden,T
AU  - Hunt,GJ
AU  - Dougherty,MK
DO  - 10.1029/2020JA028473
EP  - 18
PY  - 2021///
SN  - 2169-9380
SP  - 1
TI  - Discovery of Alfven waves planetward of Saturn's rings
T2  - Journal of Geophysical Research: Space Physics
UR  - http://dx.doi.org/10.1029/2020JA028473
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000627265100012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JA028473
UR  - http://hdl.handle.net/10044/1/91348
VL  - 126
ER  -

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