The Hall current system revealed as a statistical significant pattern during fast flows
We have examined the dawn-dusk component of the magnetic field, <I>B<sub>Y</sub></I>, in the night side current sheet during fast flows in the neutral sheet. 237 h of Cluster data from the plasma sheet between 2 August 2002 and 2 October 2002 have been analysed. The spat...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2008-11-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/26/3429/2008/angeo-26-3429-2008.pdf |
| _version_ | 1828761944906006528 |
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| author | K. Snekvik R. Nakamura N. Østgaard S. Haaland S. Haaland A. Retinò |
| author_facet | K. Snekvik R. Nakamura N. Østgaard S. Haaland S. Haaland A. Retinò |
| author_sort | K. Snekvik |
| collection | DOAJ |
| description | We have examined the dawn-dusk component of the magnetic
field, <I>B<sub>Y</sub></I>, in the night side current sheet during fast flows in
the neutral sheet.
237 h of Cluster data from the plasma sheet between 2 August 2002
and 2 October 2002 have been analysed.
The spatial pattern of <I>B<sub>Y</sub></I> as a function of the distance from the
centre of the current sheet has been estimated by using a Harris current sheet
model.
We have used the average slopes of these patterns
to estimate earthward and tailward currents.
For earthward fast flows there is a tailward current in the inner central plasma sheet
and an earthward current in the outer central plasma sheet on average. For tailward fast flows the
currents are oppositely directed.
These observations are interpreted as signatures of Hall currents in the reconnection
region or as field aligned currents which are connected with these currents. Although
fast flows often are associated with a dawn-dusk current wedge, we believe that
we have managed to filter out such currents from our statistical patterns. |
| first_indexed | 2024-12-11T01:36:46Z |
| format | Article |
| id | doaj.art-2739b7fe4103438f8c88543bfe74e518 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-11T01:36:46Z |
| publishDate | 2008-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-2739b7fe4103438f8c88543bfe74e5182022-12-22T01:25:10ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762008-11-01263429343710.5194/angeo-26-3429-2008The Hall current system revealed as a statistical significant pattern during fast flowsK. Snekvik0R. Nakamura1N. Østgaard2S. Haaland3S. Haaland4A. Retinò5Department of Physics and Technology, University of Bergen, Bergen, NorwaySpace Research Institute, Austrian Academy of Sciences, Graz, AustriaDepartment of Physics and Technology, University of Bergen, Bergen, NorwayDepartment of Physics and Technology, University of Bergen, Bergen, NorwayMax-Planck-Institut für Extraterrestrische Physik, Garching, GermanySpace Research Institute, Austrian Academy of Sciences, Graz, AustriaWe have examined the dawn-dusk component of the magnetic field, <I>B<sub>Y</sub></I>, in the night side current sheet during fast flows in the neutral sheet. 237 h of Cluster data from the plasma sheet between 2 August 2002 and 2 October 2002 have been analysed. The spatial pattern of <I>B<sub>Y</sub></I> as a function of the distance from the centre of the current sheet has been estimated by using a Harris current sheet model. We have used the average slopes of these patterns to estimate earthward and tailward currents. For earthward fast flows there is a tailward current in the inner central plasma sheet and an earthward current in the outer central plasma sheet on average. For tailward fast flows the currents are oppositely directed. These observations are interpreted as signatures of Hall currents in the reconnection region or as field aligned currents which are connected with these currents. Although fast flows often are associated with a dawn-dusk current wedge, we believe that we have managed to filter out such currents from our statistical patterns.https://www.ann-geophys.net/26/3429/2008/angeo-26-3429-2008.pdf |
| spellingShingle | K. Snekvik R. Nakamura N. Østgaard S. Haaland S. Haaland A. Retinò The Hall current system revealed as a statistical significant pattern during fast flows Annales Geophysicae |
| title | The Hall current system revealed as a statistical significant pattern during fast flows |
| title_full | The Hall current system revealed as a statistical significant pattern during fast flows |
| title_fullStr | The Hall current system revealed as a statistical significant pattern during fast flows |
| title_full_unstemmed | The Hall current system revealed as a statistical significant pattern during fast flows |
| title_short | The Hall current system revealed as a statistical significant pattern during fast flows |
| title_sort | hall current system revealed as a statistical significant pattern during fast flows |
| url | https://www.ann-geophys.net/26/3429/2008/angeo-26-3429-2008.pdf |
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