Flow speed inside the brightness boundary of coronal streamers | Zendy

Suess S. T. | Zendy; Nerney S. | Zendy

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Flow speed inside the brightness boundary of coronal streamers

Author(s) -

Suess S. T.,

Nerney S.

Publication year - 2006

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/2006gl026182

Subject(s) - outflow , physics , brightness , magnetohydrodynamic drive , flow (mathematics) , mechanics , geology , magnetohydrodynamics , geometry , meteorology , astronomy , magnetic field , mathematics , quantum mechanics

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 ⊙ and an outflow of ∼100 km/s at 5 R ⊙ . We briefly describe the model, observations, and physical interpretation.

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