Abstract
Using data taken with the multi-channel magnetograph at KPNO, we demonstrate that plage regions surrounding a sunspot have thermal properties found in the photospheric network. These network-like regions existed up to the edge of the penumbra of the sunspot. Temperature gradients inferred from equivalent width fluctuations in our data do not conflict with the requirements of the theory (Parker, 1978) for flux tubes to exist at subphotospheric levels.
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Nauer, D.J., Teske, R.G. & Elste, G.E. Characterististics of plage fragments with photospheric network properties. Sol Phys 67, 23–28 (1980). https://doi.org/10.1007/BF00146679
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DOI: https://doi.org/10.1007/BF00146679