The spatial relation between EUV cavities and linear polarization signatures

Solar coronal cavities are regions of rarefied density and elliptical cross-section. The Coronal Multi-channel Polarimeter (CoMP) obtains daily full-Sun coronal observations in linear polarization, allowing a systematic analysis of the coronal magnetic field in polar-crown prominence cavities. These...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2013-06, Vol.8 (S300), p.395-396
Main Authors: Bak-Stȩślicka, Urszula, Gibson, Sarah E., Fan, Yuhong, Bethge, Christian, Forland, Blake, Rachmeler, Laurel A.
Format: Article
Language:English
Subjects:
Contributed Papers
Corona
Coronas
Cross sections
Density
Holes
Linear polarization
Magnetic fields
Polarimeters
Signatures
Solar flares
Sun
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Summary:Solar coronal cavities are regions of rarefied density and elliptical cross-section. The Coronal Multi-channel Polarimeter (CoMP) obtains daily full-Sun coronal observations in linear polarization, allowing a systematic analysis of the coronal magnetic field in polar-crown prominence cavities. These cavities commonly possess a characteristic “lagomorphic” signature in linear polarization that may be explained by a magnetic flux-rope model. We analyze the spatial relation between the EUV cavity and the CoMP linear polarization signature.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921313011253