✦ LIBER ✦

Flow in coronal loops with a mass source

✍ Scribed by Giancarlo Noci; Francesca Zuccarello

Publisher: Springer
Year: 1983
Tongue: English
Weight: 808 KB
Volume: 88
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00196187

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✦ Synopsis

This research studies the flow of plasma inside a coronal loop in which an injection of plasma through the lateral surface is permitted. The flow is assumed steady and polytropic.

The problem covers two cases: (a) upflow at one footpoint, downflow at the other; (b) downflow at both footpoints. The first case can be shown to be quite similar to that of a mass-conserving flow with variable cross section; the second, instead, is characterized by solutions with a different type of topology; its main new feature is the obvious fact that all the solutions pass through a single point going from negative to positive velocities.

In this second case the density ratio between footpoints and top can be much smaller than in a mass conserving flow. This can explain some properties of observed loops.

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