34th Solar Physics Division Meeting, June 2003
Session 6 Solar Wind and Heliosphere
Poster, Monday, June 16, 2003, 3:30-5:00pm, Mezzanine

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[6.02] Observations of Slow Solar Wind Outflow in Coronal Streamers and the Relation to Current Sheet Structure

L. Strachan (Harvard Smithsonian CfA), L. Ofman (CUA), A.V. Panasyuk (Harvard Smithsonian CfA)

UVCS/SOHO observations have allowed measurements of the slow solar wind outflow in streamers by using O VI emission at 1032 and 1037 Å(Strachan et al 2002). Here we analyze the UVCS data to obtain more detailed outflow velocities of O 5+ in the legs and stalks of streamers. According to MHD models current sheets are believed to exist in the stalks and legs of coronal streamers, and the slow solar wind outflow speed peaks at same locations. In this work we compare the observations of outflow velocities to the velocities predicted by three-fluid model that includes O 5+. We present some preliminary data and discuss constraints on the observed and model values of the streamer parameters.


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Bulletin of the American Astronomical Society, 35 #3
© 2003. The American Astronomical Soceity.