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Origin of quiet-Sun magnetic fields revealed with Hinode

Published online by Cambridge University Press:  18 July 2013

Ryohko Ishikawa
Ryohko Ishikawa*
Affiliation:
National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan email: ryoko.ishikawa@nao.ac.jp
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Abstract

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Quiet-Sun magnetic fields are enigmatic in terms of their properties, and their origin is not well understood. One likely possibility is that they are a consequence of interactions with turbulent convective motions of various temporal and spatial scales. Here we investigate the relationship between small-scale magnetic fields and various convection flows. We demonstrate that in addition to granulation and supergranulation, mesogranulation also plays an important role in structuring quiet-Sun magnetic fields. We also study the vector magnetic fields in the quiet Sun, and propose that emerging granular-scale bipolar loops are major sources of the quiet-Sun magnetic fields.

Keywords

Sun: magnetic fieldsSun: granulationconvectionpolarization
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 143 - 148
Copyright
Copyright © International Astronomical Union 2013 

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