Flow speed inside the brightness boundary of coronal streamers

Details Flow speed inside the brightness boundary of coronal streamers Flow speed inside the brightness boundary of coronal streamers

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3310104s&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 10, CiteID L10104

Astronomy and Astrophysics

Astrophysics

4

Interplanetary Physics: Solar Wind Sources, Solar Physics, Astrophysics, And Astronomy: Corona, Solar Physics, Astrophysics, And Astronomy: Magnetic Fields

Scientific paper

Density measurements in the legs of coronal streamers, where there might be outflow, are reproduced here using a magnetohydrodynamic model of the flow inside the brightness boundary of streamers. The model returns values for the flow speed and stream tube geometry (spreading) between the base and a few solar radii. The flow speed is consistent with there being no measurable outflow below 2.5 R$\odot$ and an outflow of ~100 km/s at 5 R$\odot$. We briefly describe the model, observations, and physical interpretation.

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