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Proceedings Paper

Studies in optical solar polarimetry
Author(s): Steve R. Fullerton
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Paper Abstract

Optical solar polarimetry is being studied at the University of Glasgow Observatory as part of a program to investigate the Solar-Stellar Connection. As the degree of polarization being measured is small, typically 0.01% or less, detection to high precisions require accurate techniques incorporating high quality optics and photon counting for the best efficiency. Whole disk solar polarization has been measured at the center of the Fe-line at 4872.14 angstroms and at H(beta) , using a tilt-scanning narrow-band (2 angstroms) interference filter, which show small variations that may be due to the movement of active regions across the solar disk. A double-beam optical polarimeter, using a Savart plate as an analyzer, has been constructed to observe isolated regions of the solar disk. Comparisons will be made between the polarization in active regions and the quiet photosphere, and the center-to-limb variation and the wavelength dependence of the polarization will be investigated.

Paper Details

Date Published: 15 February 1994
PDF: 6 pages
Proc. SPIE 2010, X-Ray and Ultraviolet Polarimetry, (15 February 1994); doi: 10.1117/12.168584
Show Author Affiliations
Steve R. Fullerton, Univ. of Glasgow Observatory (United Kingdom)

Published in SPIE Proceedings Vol. 2010:
X-Ray and Ultraviolet Polarimetry
Silvano Fineschi, Editor(s)

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