Nonlocal heat transport in static solar coronal loops
Abstract
We investigate the limits of applicability of the SpitzerHarm thermal conductivity in solar coronal loops and show that the ratio λ_{0} /L _{ T }of electron meanfree path to temperature scale height in largescale structures can approach the limits of the SpitzerHarm theory. We use a nonlocal formulation of heat transport to compute a grid of loop models: the effects of nonlocal transport on the distribution of differential emission measure are particularly important in the coronal part of loops longer than the pressure scale height s _{ p }.We derive a scaling law for λ_{0}/L _{ T }in the corona, showing that it grows exponentially with L/s _{ p }, and discuss effects of nonlocal heat transport in the transition region.
 Publication:

Solar Physics
 Pub Date:
 April 1991
 DOI:
 10.1007/BF00152289
 Bibcode:
 1991SoPh..132..279C
 Keywords:

 Coronal Loops;
 Heat Transfer;
 Solar Corona;
 Thermal Conductivity;
 Scaling Laws;
 Stellar Models;
 Solar Physics