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Asymmetry in the Ea...
Asymmetry in the Earth's magnetotail neutral sheet rotation due to IMF B-y sign?
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- Pitkänen, Timo, 1979- (author)
- Umeå universitet,Institutionen för fysik,Shandong Provincial Key Laboratory of Optical Astronomy and Solar‑Terres‑ trial Environment, Institute of Space Sciences, Shandong University, Weihai, China; Space Physics and Astronomy Research Unit, University of Oulu, Oulu, Finland,Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China.;Umeå Univ, Dept Phys, Umeå, Sweden.;Univ Oulu, Space Phys & Astron Res Unit, Oulu, Finland.
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- Kullen, Anita (author)
- KTH,Rymd- och plasmafysik
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- Cai, Lei (author)
- KTH,Rymd- och plasmafysik
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- Park, Jong-Sun (author)
- Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China.
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- Vanhamaki, Heikki (author)
- Univ Oulu, Space Phys & Astron Res Unit, Oulu, Finland.
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- Hamrin, Maria, 1972- (author)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, Umeå, Sweden.
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- Aikio, Anita T. (author)
- Univ Oulu, Space Phys & Astron Res Unit, Oulu, Finland.
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- Chong, G. Siung (author)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, Umeå, Sweden.
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- De Spiegeleer, Alexandre (author)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, Umeå, Sweden.
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- Shi, Quanqi (author)
- Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China.
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(creator_code:org_t)
- 2021-01-12
- 2021
- English.
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In: Geoscience Letters. - : Springer Nature. - 2196-4092. ; 8:1
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Abstract
Subject headings
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- Evidence suggests that a non-zero dawn-dusk interplanetary magnetic field (IMF B-y) can cause a rotation of the cross-tail current sheet/neutral sheet around its axis aligned with the Sun-Earth line in Earth's magnetotail. We use Geotail, THEMIS and Cluster data to statistically investigate how the rotation of the neutral sheet depends on the sign and magnitude of IMF B-y. In our dataset, we find that in the tail range of -30 < XGSM < -15 R-E, the degree of the neutral sheet rotation is clearly smaller, there appears no significant rotation or even, the rotation is clearly to an unexpected direction for negative IMF B-y, compared to positive IMF B-y. Comparison to a model by Tsyganenko et al. (2015, doi:10.5194/angeo-33-1-2015) suggests that this asymmetry in the neutral sheet rotation between positive and negative IMF B-y conditions is too large to be explained only by the currently known factors. The possible cause of the asymmetry remains unclear.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- Solar wind-magnetosphere interaction
- Magnetosphere configuration
- Magnetotail
- Plasma sheet
- Neutral sheet
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Pitkänen, Timo, ...
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Kullen, Anita
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Cai, Lei
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Park, Jong-Sun
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Vanhamaki, Heikk ...
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Hamrin, Maria, 1 ...
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Aikio, Anita T.
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Chong, G. Siung
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De Spiegeleer, A ...
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Shi, Quanqi
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- 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 Fusion Plasma an ...
- Articles in the publication
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Geoscience Lette ...
- By the university
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Royal Institute of Technology
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Umeå University