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Response of magnetotail twisting to variations in IMF B-y: A THEMIS case study 1-2 January 2009
KTH, Skolan för elektro- och systemteknik (EES), Rymd- och plasmafysik.ORCID-id: 0000-0002-0349-0645
Vise andre og tillknytning
2016 (engelsk)Inngår i: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 43, nr 15, s. 7822-7830Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Theoretical considerations, observations, and simulations have shown that the B-y component of the interplanetary magnetic field (IMF) may cause twisting of the magnetotail. However, the fundamental issues, the temporal and spatial responses of the magnetotail in the twisting process, are still unresolved. We report unique multipoint observations of the response of the magnetotail to the variations in IMF B-y on 1-2 January 2009. For the first time, estimates of the tail twisting response time at different (Time History of Events and Macroscale Interactions during Substorms, THEMIS) distances in the same event are inferred. Using cross-correlation and timing analyses, we find that the tail twisting propagates from farther out toward the Earth and the response time increases significantly to the inner magnetosphere.

sted, utgiver, år, opplag, sider
Blackwell Publishing, 2016. Vol. 43, nr 15, s. 7822-7830
Emneord [en]
solar wind-magnetosphere interaction, magnetotail twisting, tail twisting temporal response, tail twisting spatial response
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-194012DOI: 10.1002/2016GL070068ISI: 000383290300005Scopus ID: 2-s2.0-84983509350OAI: oai:DiVA.org:kth-194012DiVA, id: diva2:1038890
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QC 20161020

Tilgjengelig fra: 2016-10-20 Laget: 2016-10-14 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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