Stagnation Flow in Thin Streamer Boundaries

Details Stagnation Flow in Thin Streamer Boundaries Stagnation Flow in Thin Streamer Boundaries

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...624..378n&link_type=abstract

The Astrophysical Journal, Volume 624, Issue 1, pp. 378-391.

Astronomy and Astrophysics

Astronomy

8

Sun: Solar Wind, Sun: Corona

Scientific paper

Slow solar wind is believed to arise in the legs or near the cusp of streamers, inside the brightness boundary. In an earlier study, we used an analytic model of flow in this layer to analyze the effect of the magnetic field on the geometry of the flow. That study successfully described those conditions that can lead to a decrease of the flow speed with increasing height near the cusp of the closed magnetic helmet inside a streamer. The model was, however, restricted to a radial brightness boundary on the streamer and hence to a relatively thick outflow region near the cusp. Here this restriction is relaxed through the explicit introduction of a coronal hole-like region outside the brightness boundary. We use the model to describe flow solutions for outflow in a thin layer inside the brightness boundary. The flow geometry now can be constrictive just above the cusp, and we show solutions of this type. Many solutions then show a diverging geometry at greater heights above the cusp, out to at least 5 Rsolar. We fail to find solutions in which the geometry alone leads to slow flow but give a more general description than before of conditions favoring slow flow and, consequently, gravitational settling in the legs of streamers.

Affiliated with

Also associated with

No associations

Rating

Stagnation Flow in Thin Streamer Boundaries does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Stagnation Flow in Thin Streamer Boundaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stagnation Flow in Thin Streamer Boundaries will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1701006