Formation of the current sheet in a coronal streamer
Lucia Abbo, Ester Antonucci, Roberto Lionello, Zoran Miki\'c, Pete, Riley
TL;DR
This study investigates the formation of the current sheet in a coronal streamer using high-resolution spectroscopic data and 3D MHD modeling to understand its role in the slow solar wind origin.
Contribution
It combines spectroscopic analysis with magnetic topology modeling to provide new insights into current sheet formation in coronal streamers.
Findings
Indications of current sheet formation in the coronal streamer.
Coronal magnetic topology influences current sheet development.
Insights into the source regions of the slow solar wind.
Abstract
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.
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Taxonomy
TopicsSolar and Space Plasma Dynamics · Ionosphere and magnetosphere dynamics