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.
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Jackman, C.M.
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Arridge, C.S.
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McAndrews, H.J.
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Henderson, M.G.
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Wilson, R.J.
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18 August 2009
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), .
(doi:10.1029/2009GL039149).
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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Jackman et al nward field excursions09.pdf
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Published date: 18 August 2009
Organisations:
Astronomy Group
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Local EPrints ID: 356972
URI: http://eprints.soton.ac.uk/id/eprint/356972
ISSN: 0094-8276
PURE UUID: 17fbdd0a-4437-4232-9c49-02978c525f8a
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Date deposited: 03 Oct 2013 13:28
Last modified: 14 Mar 2024 14:54
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Author:
C.S. Arridge
Author:
H.J. McAndrews
Author:
M.G. Henderson
Author:
R.J. Wilson
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