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Magnetic Fields and Convection: New Observations

Published online by Cambridge University Press:  04 August 2017

W. C. Livingston
W. C. Livingston*
Affiliation:
Kitt Peak National Observatory

Abstract

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Fourier Transform Spectrometer observations of Fraunhofer line displacement and asymmetry suggest that granular convection is inhibited in regions of magnetic activity. We discuss the observations and a method for removing the effects of solar rotation. In integrated sunlight (“the sun-as-a-star”) records of line asymmetries indicate that a significant reduction in the amplitude of the sun's convective signature took place between 1980 and 1982. To the extent that full disk line asymmetry arises strictly from convective motions, the results constitute strong evidence that magnetic activity influences (inhibits) convective motion on a global scale.

Type
II. Rotation — Activity — Cycle — Age Connection: Observations
Information
Symposium - International Astronomical Union , Volume 102: Solar and Stellar Magnetic Fields: Origins and Coronal Effects , 1983 , pp. 149 - 153
Copyright
Copyright © Reidel 1983 

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