Non-local heat transport in static solar coronal loops

✍ Scribed by A. Ciaravella; G. Peres; S. Serio

• Publisher: Springer
• Year: 1991
• Tongue: English
• Weight: 625 KB
• Volume: 132
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00152289

✦ Synopsis

We investigate the limits of applicability of the Spitzer-Harm thermal conductivity in solar coronal loops and show that the ratio 2o/1. r of electron mean-free path to temperature scale height in large-scale structures can approach the limits of the Spitzer-Harm theory. We use a non-local formulation of heat transport to compute a grid of loop models: the effects of non-local transport on the distribution of differential emission measure are particularly important in the coronal part of loops longer than the pressure scale height sp. We derive a scaling law for .)~o/LT in the corona, showing that it grows exponentially with Lisp, and discuss effects of non-local heat transport in the transition region.