Heat flux saturation in hydrodynamic soft X-ray solar flare plasmas

The role of heat flux limitation in soft X-ray emitting solar flare plasmas is considered. Simple analytic arguments suggest that flux limitation is likely to be important during the explosive heating phase, even for relatively modest coronal energy fluxes ( less than or equal to 10 super(9) erg cm...

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Published in:Solar physics 1984-02, Vol.90 (2), p.343-356
Main Authors: CRAIG, I. J. D, DAVYS, J. W
Format: Article
Language:English
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Astronomy
Earth, ocean, space
Exact sciences and technology
Flares, bursts, and related phenomena
Solar physics
Solar system
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DAVYS, J. W
description The role of heat flux limitation in soft X-ray emitting solar flare plasmas is considered. Simple analytic arguments suggest that flux limitation is likely to be important during the explosive heating phase, even for relatively modest coronal energy fluxes ( less than or equal to 10 super(9) erg cm super(-) super(2) sec super(-) super(1) ). This conclusion is reinforced by a detailed flare loop simulation of the heating phase. Since flux saturation effectively bottles up the coronal heat flux, mass motions now assume a dominant role in transferring energy from the coronal flare source to the lower transition region. The mass-energy exchange between the corona and chromosphere produces dramatic changes in the thermal structure of the plasma which are reflected in the differential emission measure profile of the flaring loop.
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subjects Astronomy
Earth, ocean, space
Exact sciences and technology
Flares, bursts, and related phenomena
Solar physics
Solar system
title Heat flux saturation in hydrodynamic soft X-ray solar flare plasmas
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