Anomalous cooling of coronal loops with turbulent suppression of thermal conduction

Bian, N. H., Watters, J. M., Kontar, E. P. and Emslie, A. G. (2016) Anomalous cooling of coronal loops with turbulent suppression of thermal conduction. Astrophysical Journal, 833(1), 76. (doi:10.3847/1538-4357/833/1/76)

[img]
Preview
Text
140987.pdf - Published Version

340kB

Abstract

We investigate the impact of turbulent suppression of parallel heat conduction on the cooling of post-flare coronal loops. Depending on the value of the mean free path lT associated with the turbulent scattering process, we identify four main cooling scenarios. The overall temperature evolution, from an initial temperature in excess of 107 K, is modeled in each case, highlighting the evolution of the dominant cooling mechanism throughout the cooling process. Comparison with observed cooling times allows the value of lT to be constrained, and interestingly this range corresponds to situations where collision-dominated conduction plays a very limited role, or even no role at all, in the cooling of post-flare coronal loops.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kontar, Dr Eduard and Bian, Dr Nicolas Horace
Authors: Bian, N. H., Watters, J. M., Kontar, E. P., and Emslie, A. G.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Astrophysical Journal
Publisher:IOP Publishing
ISSN:0004-637X
ISSN (Online):1538-4357
Published Online:08 December 2016
Copyright Holders:Copyright © 2016 The American Astronomical Society
First Published:First published in Astrophysical Journal 833(1): 76
Publisher Policy:Reproduced in accordance with the publisher copyright policy
Related URLs:

University Staff: Request a correction | Enlighten Editors: Update this record