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Spectropolarimetric

Design of a Highly Efficient Polychromatic Full-Stokes Polarization Modulator for the CRISP Imaging Spectrometer

Graphic image depicting spectro-polarimetric data
Tuesday, February 2, 2021

In 2014 HAO built a polarimetric modulator for the CRISP instrument on the Swedish 1-m Solar Telescope in La Palma, using the principles of polychromatic modulation previously developed by HAO scientists. This paper discusses the processes by which the modulator was designed, built, and tested.

Zihao Yang

Submitted by whawkins on May 12, 2020 - 9:45am

Zihao Yang is a visiting scientist in the High Altitude Observatory (HAO) at the National Center for Atmospheric Research (NCAR). He is a PhD student at Peking University (PKU) in Beijing, China, where he is under the supervision of Prof. Hui Tian.

Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare

Graphic of intensity and polarization data
Wednesday, February 12, 2020

We examine spectropolarimetric data from the CoMP instrument, acquired during the evolution of the September 10th 2017 X8.2 solar flare on the western solar limb. CoMP captured linearly polarized light from two emission lines of Fe XIII at 1074.7 and 1079.8 nm, from 1.03 to 1.5 solar radii.

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The National Center for Atmospheric Research is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.