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Simultaneous double...
Simultaneous double star and cluster ftes observations on the dawnside flank of the magnetosphere
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Marchaudon, A. (author)
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Owen, C. J. (author)
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Bosqued, J. -M (author)
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Fear, R. C. (author)
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Fazakerley, A. N. (author)
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Dunlop, M. W. (author)
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Lahiff, A. D. (author)
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Carr, C. (author)
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Balogh, A. (author)
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- Lindqvist, Per-Arne (author)
- KTH,Alfvénlaboratoriet
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Rème, H. (author)
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(creator_code:org_t)
- 2006
- 2006
- English.
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In: Eur Space Agency Spec Publ ESA SP. - 929092909X - 9789290929093 ; , s. 163-170
- Related links:
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https://urn.kb.se/re...
Abstract
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- We present Cluster and Double Star-1 (TC-1) observations from a close magnetic conjunction on May 8, 2004. The five spacecraft were on the dawnside flank of the magnetosphere, with TC-1 located near the equatorial plane and Cluster at higher geographic latitudes in the southern hemisphere. TC-1, at its apogee, skimmed the magnetopause for almost 8 hours (between 08:00-16:00 UT). Flux Transfer Events (FTEs), moving southward/tailward from the reconnection site, were observed by TC-1 throughout almost all of the period. Cluster, travelling on a mainly dawn-dusk trajectory, crossed the magnetopause at around 10:30 UT in the same Magnetic Local Time (MLT) sector as TC-1 and remained close to the magnetopause boundary layer in the southern hemisphere. The four Cluster spacecraft observed FTEs for a period of 6.5 hours between 07:30 and 14:00 UT. From the properties of these FTEs, the reconnection site was located northward of both TC-1 and Cluster on the dawn flank of the magnetosphere. Reconnection occurred between draped magnetosheath and closed magnetospheric field lines. Despite variable interplanetary magnetic field (IMF) conditions and IMF-B z turnings, the IMF clock-angle remained greater than 70° and the location site appeared to remain relatively stable in position during the whole period. This result is in agreement with previous studies which reported that the dayside reconnection remained active for an IMF clock-angle greater than 70°. The simultaneous observation of FTEs at both Cluster and TC-1, separated by 2 hours in MLT, implies that the reconnection site on the magnetopause must have been extended over several hours in MLT. This event has been already presented in more details in [1].
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Astrophysics
- Boundary layers
- Magnetic field effects
- Magnetic fields
- Space research
- Spacecraft
- Equatorial plane
- Flux Transfer Events (FTE)
- Magnetic Local Time (MLT)
- Magnetopause
- Magnetosphere
Publication and Content Type
- ref (subject category)
- kon (subject category)
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- By the author/editor
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Marchaudon, A.
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Owen, C. J.
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Bosqued, J. -M
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Fear, R. C.
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Fazakerley, A. N ...
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Dunlop, M. W.
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show more...
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Lahiff, A. D.
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Carr, C.
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Balogh, A.
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Lindqvist, Per-A ...
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Rème, H.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Eur Space Agency ...
- By the university
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Royal Institute of Technology