Scaling laws between thermal and magnetic properties have been reported to investigate the coronal heating mechanism. Yashiro and Shibata (2001) examined the properties of entire active regions observed with Yohkoh and SOHO, and found the following empirical scaling laws: P ∝ B~(0.78) L~(-0.16), where P, B, and L are the gas pressure, magnetic flux density, and region dimension, respectively, of active regions. We have made detailed comparisons with previous studies from the Skylab results to the steady loop scaling laws found by Klimchuk & Porter (1995). We conclude that the scaling law of entire active regions is consistent with that for steady coronal loops.
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