Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997astl...23..735b&link_type=abstract
Astronomy Letters, Volume 23, Issue 6, November 1997, pp.735-741; Pis'ma v Astronomicheskii Zhurnal, Vol. 23, p. 843
Astronomy and Astrophysics
Astronomy
Scientific paper
We study the final phase of the transient process that arises after the loss of high-temperature thermal equilibrium in a finite range of heights of the arches in a simple magnetic arcade for which the condition of formation of magnetic depressions at the summits of nonequilibrium arches in the first stage of the transient process is satisfied. It is shown that, in the stage under consideration, a prominence is formed near the summits of nonequilibrium arches between the two fronts of thermal cooling waves that separate the cool matter of the prominence from the hot coronal plasma. The thermal fronts first move away from the summits and then turn back and stop, producing a nonmonotonic change in the thickness of the forming prominence with time. The flows of hot plasma rising along the nonequilibrium arches from the base of the arcade cool down radiatively during the passage of the fronts of thermal waves, maintaining the quasi-stationarity of these fronts due to convective heat transfer. The formation process is accompanied by a deepening of the magnetic depressions, by an increase in the cool-plasma density at the bottom of the depressions as the mass of the cool matter generally increases due to plasma inflow through the thermal fronts, and by the appearance of a stationary dynamical structure of the prominence when the plasma inflow is balanced by the downward sink of cool matter across the magnetic field. Based on the derived relations that describe the formation of a prominence, we obtained quantitative estimates of various parameters for the forming prominence.
No associations
LandOfFree
On the dynamical model of solar prominences 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 On the dynamical model of solar prominences, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the dynamical model of solar prominences will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1686725