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Model of solar wind flow near an equatorial coronal streamer

Authors: A. M. Vásquez; A. A. van Ballegooijen; J. C. Raymond;

Model of solar wind flow near an equatorial coronal streamer

Abstract

In a previous work (1) we developed a semiempirical axisymmetric and magnetostatic model of the minimum activity corona, accounting for the gas pressure gradient effects on the magnetic structure. The model is able to reproduce the streamer belt closed region and the streamer surrounding open field lines, predicting high plasma β values (>1) in the closed region, low values in the surrounding open-field regions (streamer legs) and even lower values for the polar hole region. In this work we add to that model a solar wind solution under the assumption of mass and momentum flux conservation. For open field lines arising from the polar hole region we find a fast wind solution that reaches values of about 600 km/sec at 10 R⊙. For open field lines arising from the surroundings of the closed region (streamer legs), the morphology of the field lines is fast diverging, we find that this results in the existence of two posible sonic points. The first sonic point, located below the streamer cusp, gives a relatively...

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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