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Transpolar arc observation after solar wind entry into the high-latitude magnetosphere
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0002-0349-0645
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2015 (English)In: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 120, no 5, 3525-3534 p.Article in journal (Refereed) Published
Abstract [en]

Recently, Cluster observations have revealed the presence of new regions of solar wind plasma entry at the high-latitude magnetospheric lobes tailward of the cusp region, mostly during periods of northward interplanetary magnetic field. In this study, observations from the Global Ultraviolet Imager (GUVI) experiment on board the TIMED spacecraft and Wideband Imaging Camera imager on board the IMAGE satellite are used to investigate a possible link between solar wind entry and the formation of transpolar arcs in the polar cap. We focus on a case when transpolar arc formation was observed twice right after the two solar wind entry events were detected by the Cluster spacecraft. In addition, GUVI and IMAGE observations show a simultaneous occurrence of auroral activity at low and high latitudes after the second entry event, possibly indicating a two-part structure of the continuous band of the transpolar arc.

Place, publisher, year, edition, pages
2015. Vol. 120, no 5, 3525-3534 p.
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-171911DOI: 10.1002/2014JA020912ISI: 000357869600019Scopus ID: 2-s2.0-84934908198OAI: oai:DiVA.org:kth-171911DiVA: diva2:845388
Note

QC 20150811

Available from: 2015-08-11 Created: 2015-08-10 Last updated: 2017-12-04Bibliographically approved

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Kullen, Anita

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