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The Persistence of Apparent Non-Magnetostatic Equilibrium in NOAA 11035

Published online by Cambridge University Press:  24 July 2015

Sarah A. Jaeggli
Sarah A. Jaeggli*
Affiliation:
Department of Physics, Montana State University, P.O. Box 173840, Bozeman, MT 59717-3840, USA email: [email protected]
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Abstract

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NOAA 11035 was a highly sheared active region that appeared in December 2009 early in the new activity cycle. The leading polarity sunspot developed a highly unusual feature in its penumbra, an opposite polarity pore with a strong magnetic field in excess of 3500 G along one edge, which persisted for several days during the evolution of the region. This region was well observed by both space- and ground-based observatories, including Hinode, FIRS, TRACE, and SOHO. These observations, which span wavelength and atmospheric regimes, provide a complete picture of this unusual feature which may constitute a force-free magnetic field in the photosphere which is produced by the reconnection of magnetic loops low in the solar atmosphere.

Keywords

Sun: magnetic fieldssunspotspolarization
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Symposium S305: Polarimetry: From the Sun to Stars and Stellar Environments , December 2014 , pp. 35 - 41
Copyright
Copyright © International Astronomical Union 2015 

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