The coronal magnetic field reversal observed by the SOLARC instrument |
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Authors: | Yu Liu and YuanDeng Shen |
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Institution: | 1.National Astronomical Observatories,Yunnan Astronomical Observatory,Kunming,China |
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Abstract: | High-sensitivity measurements for mapping coronal magnetic field have become possible since the recent development of infrared
detection techniques. One urgent task that arises from the routine infrared observations is to interpret what the Stokes signals
could indicate for coronal magnetic fields. It is the first time for us to successfully reveal the coronal field structure
above a simple and stable sunspot on the photosphere using profiles of full Stokes parameters. In this paper, the author further
points out the deficiency in any conclusions/judgements just based on incomplete polarization data. A magnetic flux reversal
feature, observed from circular polarization data, may correspond to one or more coronal tubes with their front or farside
arching apex there, more complicated than people imagined before. To exactly locate the infrared radiation sources, we need
both circular and linear polarization data for an integrated analysis of them. |
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