Electric field scales at quasi-perpendicular shocks
This paper investigates the short scale structures that are observed in the electric field during crossings of the quasi-perpendicular bow shock using data from the Cluster satellites. These structures exhibit large amplitudes, as high as 70 m Vm<sup>-1</sup> and so make a significant...
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Copernicus Publications
2004-07-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/22/2291/2004/angeo-22-2291-2004.pdf |
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doaj-ede7645e3d934f07956fa3ddb8a0fac62020-11-25T00:45:20ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762004-07-01222291230010.5194/angeo-22-2291-2004Electric field scales at quasi-perpendicular shocksS. N. Walker0H. St. C. K. Alleyne1M. A. Balikhin2M. André3T. S. Horbury4Department of Automatic Control and Systems Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UKDepartment of Automatic Control and Systems Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UKDepartment of Automatic Control and Systems Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UKSwedish Institute of Space Physics, Uppsala Division, Box 537, SE-751 21 Uppsala, SwedenBlackett Laboratory, ICSTM, Prince Consort Road, London. UKThis paper investigates the short scale structures that are observed in the electric field during crossings of the quasi-perpendicular bow shock using data from the Cluster satellites. These structures exhibit large amplitudes, as high as 70 m Vm<sup>-1</sup> and so make a significant contribution to the overall change in potential at the shock front. It is shown that the scale size of these short-lived electric field structures is of the order of a few <i>c</i>/ω<sub><i>pe</i></sub>. The relationships between the scale size and the upstream Mach number and θ<sub><i>Bn</i></sub> are studied. It is found that the scale size of these structures decreases with increasing plasma β and as θ<sub><i>Bn</i></sub>→90°. The amplitude of the spikes remains fairly constant with increasing <i>M<sub>a</sub></i> and appears to increase as θ<sub><i>Bn</i></sub>→90°.https://www.ann-geophys.net/22/2291/2004/angeo-22-2291-2004.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
S. N. Walker H. St. C. K. Alleyne M. A. Balikhin M. André T. S. Horbury |
| spellingShingle |
S. N. Walker H. St. C. K. Alleyne M. A. Balikhin M. André T. S. Horbury Electric field scales at quasi-perpendicular shocks Annales Geophysicae |
| author_facet |
S. N. Walker H. St. C. K. Alleyne M. A. Balikhin M. André T. S. Horbury |
| author_sort |
S. N. Walker |
| title |
Electric field scales at quasi-perpendicular shocks |
| title_short |
Electric field scales at quasi-perpendicular shocks |
| title_full |
Electric field scales at quasi-perpendicular shocks |
| title_fullStr |
Electric field scales at quasi-perpendicular shocks |
| title_full_unstemmed |
Electric field scales at quasi-perpendicular shocks |
| title_sort |
electric field scales at quasi-perpendicular shocks |
| publisher |
Copernicus Publications |
| series |
Annales Geophysicae |
| issn |
0992-7689 1432-0576 |
| publishDate |
2004-07-01 |
| description |
This paper investigates the short scale structures that are observed in the
electric field during crossings of the quasi-perpendicular bow shock using
data from the Cluster satellites. These structures exhibit large amplitudes,
as high as 70 m Vm<sup>-1</sup> and so make a significant contribution to the overall
change in potential at the shock front. It is shown that the scale size of
these short-lived electric field structures is of the order of a few <i>c</i>/ω<sub><i>pe</i></sub>. The relationships between the scale size and the upstream Mach number and
θ<sub><i>Bn</i></sub> are studied. It is found that the scale size of these
structures decreases with increasing plasma β and as
θ<sub><i>Bn</i></sub>→90°. The amplitude of the spikes remains
fairly constant with increasing <i>M<sub>a</sub></i> and appears to increase as
θ<sub><i>Bn</i></sub>→90°. |
| url |
https://www.ann-geophys.net/22/2291/2004/angeo-22-2291-2004.pdf |
| work_keys_str_mv |
AT snwalker electricfieldscalesatquasiperpendicularshocks AT hstckalleyne electricfieldscalesatquasiperpendicularshocks AT mabalikhin electricfieldscalesatquasiperpendicularshocks AT mandre electricfieldscalesatquasiperpendicularshocks AT tshorbury electricfieldscalesatquasiperpendicularshocks |
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1725270705805721600 |