Accession Number:

ADA101486

Title:

The Cooling and Condensation of Flare Coronal Plasma,

Descriptive Note:

Corporate Author:

STANFORD UNIV CA INST FOR PLASMA RESEARCH

Personal Author(s):

Report Date:

1981-04-01

Pagination or Media Count:

25.0

Abstract:

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. Author

Subject Categories:

  • Astrophysics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE