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Northward field excursions in Saturn’s magnetotail and their relationship to magnetospheric periodicities

Northward field excursions in Saturn’s magnetotail and their relationship to magnetospheric periodicities
Northward field excursions in Saturn’s magnetotail and their relationship to magnetospheric periodicities
We present results from an investigation of Cassini encounters with Saturn’s magnetotail current sheet, using magnetic field and plasma data. In the first of two intervals shown, small periodic changes in the north-south component of the magnetic field are matched by periodic density enhancements associated with the plasma sheet center. In the second interval, a large plasmoid signature is observed set against a background of small-scale current sheet motions. We interpret the quasi-periodic small field deflections and density enhancements as large-scale wave-like motion of the current sheet. We stress that plasmoid signatures are of a clearly different character and occur much less frequently.
0094-8276
1-5
Jackman, C.M.
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Arridge, C.S.
cddea13c-2c2a-44c8-9607-309820a0fb0f
McAndrews, H.J.
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Henderson, M.G.
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Wilson, R.J.
29353e8b-14e8-46b9-b5f0-91838ba7fc30
Jackman, C.M.
9bc3456c-b254-48f1-ade0-912c5b8b4529
Arridge, C.S.
cddea13c-2c2a-44c8-9607-309820a0fb0f
McAndrews, H.J.
0e419a05-f21c-413e-9913-462fc341171b
Henderson, M.G.
c2ac976f-4f86-4ebd-9abf-f7be41f630fc
Wilson, R.J.
29353e8b-14e8-46b9-b5f0-91838ba7fc30

Jackman, C.M., Arridge, C.S., McAndrews, H.J., Henderson, M.G. and Wilson, R.J. (2009) Northward field excursions in Saturn’s magnetotail and their relationship to magnetospheric periodicities. Geophysical Research Letters, 36 (L16101), 1-5. (doi:10.1029/2009GL039149).

Record type: Article

Abstract

We present results from an investigation of Cassini encounters with Saturn’s magnetotail current sheet, using magnetic field and plasma data. In the first of two intervals shown, small periodic changes in the north-south component of the magnetic field are matched by periodic density enhancements associated with the plasma sheet center. In the second interval, a large plasmoid signature is observed set against a background of small-scale current sheet motions. We interpret the quasi-periodic small field deflections and density enhancements as large-scale wave-like motion of the current sheet. We stress that plasmoid signatures are of a clearly different character and occur much less frequently.

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Published date: 18 August 2009
Organisations: Astronomy Group

Identifiers

Local EPrints ID: 356972
URI: http://eprints.soton.ac.uk/id/eprint/356972
ISSN: 0094-8276
PURE UUID: 17fbdd0a-4437-4232-9c49-02978c525f8a
ORCID for C.M. Jackman: ORCID iD orcid.org/0000-0003-0635-7361

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Date deposited: 03 Oct 2013 13:28
Last modified: 21 Nov 2021 03:09

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Contributors

Author: C.M. Jackman ORCID iD
Author: C.S. Arridge
Author: H.J. McAndrews
Author: M.G. Henderson
Author: R.J. Wilson

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