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Are solar chromospheric fibrils tracing the magnetic field?
Stockholm University, Faculty of Science, Department of Astronomy.
2011 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 527, L8- p.Article in journal (Refereed) Published
Abstract [en]

Fibrils are thin elongated features visible in the solar chromosphere in and around magnetized regions. Because of their visual appearance, they have been traditionally considered a tracer of the magnetic field lines. For the first time, we challenge that notion by comparing their orientation to that of the magnetic field, obtained via high-resolution spectropolarimetric observations of Ca II lines. The short answer to the question posed in the title is that mostly yes, but not always.

Place, publisher, year, edition, pages
2011. Vol. 527, L8- p.
Keyword [en]
Sun: activity, polarization, Sun: chromosphere, Sun: filaments, prominences, Sun: magnetic topology, sunspots
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-67899DOI: 10.1051/0004-6361/201016018ISI: 000287484100012OAI: diva2:472113
authorCount :2Available from: 2012-01-03 Created: 2012-01-02 Last updated: 2012-01-03Bibliographically approved

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