Formation of the current sheet in a coronal streamer

The present work is on the study of a coronal streamer observed in March 2008 at high spectral and spatial resolution by the Ultraviolet Coronagraph Spectrometer (UVCS) onboard SOHO. On the basis of a spectroscopic analysis of the O VI doublet, the solar wind plasma parameters are inferred in the ex...

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Veröffentlicht in:	arXiv.org 2011-11
Hauptverfasser:	Abbo, Lucia, Antonucci, Ester, Lionello, Roberto, Mikić, Zoran, Riley, Pete
Format:	Artikel
Sprache:	eng
Schlagworte:	Computational fluid dynamics Coronagraphs Coronas Magnetohydrodynamics Physics - Solar and Stellar Astrophysics Solar wind Spatial resolution Three dimensional models Topology
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Beschreibung
Zusammenfassung:	The present work is on the study of a coronal streamer observed in March 2008 at high spectral and spatial resolution by the Ultraviolet Coronagraph Spectrometer (UVCS) onboard SOHO. On the basis of a spectroscopic analysis of the O VI doublet, the solar wind plasma parameters are inferred in the extended corona. The analysis accounts for the coronal magnetic topology, extrapolated through a 3D magneto-hydrodynamic model. The results of the analysis show indications on the formation of the current sheet, one of the source regions of the slow coronal wind.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1111.2711