Spectropolarimetric inversions of the He I 10830: A multiplet in an active region filament

Full Stokes spectropolarimetric data (in the 10830 A region) of an active region filament were obtained in July 2005 using the Tenerife Infrared Polarimeter instrument. The polarization profiles in the filament show Zeeman-like signatures. Milne-Eddington inversions were performed to infer the chromospheric magnetic field, inclination, azimuth, velocity and Doppler width from the He I 10830 A multiplet. Field strengths of the order of 600-800 G were found in the filament. Strong transverse fields at chromospheric levels were detected near the polarity inversion line. To our knowledge, these are the highest field strengths reliably measured in these structures. Our findings suggest the possible presence of a flux rope.

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Author Kuckein, C.
Centeno, Rebecca
Martinez Pillet, Valentin
Publisher UCAR/NCAR - Library
Publication Date 2010-01-01T00:00:00
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Metadata Date 2023-08-18T19:02:23.153934
Metadata Record Identifier edu.ucar.opensky::articles:18980
Metadata Language eng; USA
Suggested Citation Kuckein, C., Centeno, Rebecca, Martinez Pillet, Valentin. (2010). Spectropolarimetric inversions of the He I 10830: A multiplet in an active region filament. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d70g3mw6. Accessed 21 July 2025.

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