Scaling Laws for a Nanoflare‐Heated Solar Corona

Abstract

The concept that the solar corona is heated by numerous small Ñarelike events dubbed "" nanoÑares ÏÏ is considered. The hot corona is viewed as an ensemble of high-temperature elemental magnetic Ðlaments created within the coronal magnetic Ðeld by randomly distributed impulsive heating events. It is shown that such an approach allows us to predict various signatures of X-ray coronal loops without specifying the details of the heating process. In particular, the dependence of the temperature, Ðlling factor, and emission measure on the length of the loop and strength of the coronal magnetic Ðeld is derived. The obtained scaling laws Ðt reasonably with observational data.