The cooling and condensation of flare coronal plasma
The cooling and condensation of flare coronal plasma
复制标题
耀斑日冕等离子体的冷却和凝结
DOI：
10.1086/159738
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
P. Sturrock
中科院分区：
文献类型：
--
作者：
S. Antiochos;P. Sturrock
We investigate a model for the decay of flare heated coronal loops in which rapid radiative cooling at the loop base creates strong pressure gradients which, in turn, generate large (supersonic) downward flows. Hence, the coronal material cools and 'condenses' onto the flare chromosphere. The important features of this model which distinguish it from previous models of flare cooling are: (1) Most of the thermal energy of the coronal plasma may be lost by mass motion rather than by conduction or coronal radiation; (2) Flare loops are not isobaric during their decay phase, and large downward velocities are present near the footprints; (3) The differential emission measure q has a strong temperature dependence, q is proportional to T to the 3.5 power. These results can account for recent observations of compact flare loops that are not consistent with the previous cooling models.
