Qu, Z. Q. and Dun, G. T. and Chang, L. and Murray, G. and Cheng, X. M. and Zhang, X. Y. and Deng, L. H. (2017) 'Spectro-imaging polarimetry of the local corona during solar eclipse.', Solar physics., 292 (2). p. 37.
Results are presented from spectro-imaging polarimetry of radiation from the local solar corona during the 2013 total solar eclipse in Gabon. This polarimetric observation was performed from 516.3 nm to 532.6 nm using a prototype Fiber Arrayed Solar Optical Telescope (FASOT). A polarimetric noise level on the order of 10−310−3 results from a reduced polarimetric optical switching demodulation (RPOSD) procedure for data reduction. It is revealed that the modality of fractional linear polarization profiles of the green coronal line shows a diversity, which may indicate complex mechanisms. The polarization degree can approach 3.2 % above the continuum polarization level on a scale of 1500 km, and the nonuniform spatial distribution in amplitude and polarization direction is found even within a small field of view of 7500 km. All of this implies that the coronal polarization is highly structured and complex even on a small scale.
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|Publisher Web site:||https://doi.org/10.1007/s11207-017-1055-x|
|Publisher statement:||© The Author(s) 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.|
|Date accepted:||16 January 2017|
|Date deposited:||13 December 2017|
|Date of first online publication:||14 February 2017|
|Date first made open access:||13 December 2017|
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