Slender Ca II H fibrils mapping magnetic fields in the low solar chromosphere

A dense forest of slender bright fibrils near a small solar active region is seen in high-quality narrowband Ca II H images from the SuFI instrument onboard the SUNRISE balloon-borne solar observatory. The orientation of these slender Ca II H fibrils (SCF) overlaps with the magnetic field configuration in the low solar chromosphere derived by magnetostatic extrapolation of the photospheric field observed with SUNRISE/IMaX and SDO/HMI. In addition, many observed SCFs are qualitatively aligned with small-scale loops computed from a novel inversion approach based on best-fit numerical MHD simulation. Such loops are organized in canopy-like arches over quiet areas that differ in height depending on the field strength near their roots.

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Author Jafarzadeh, S.
Rutten, R. J.
Solanki, S. K.
Wiegelmann, T.
Riethmüller, T. L.
Noort, M. van
Szydlarski, M.
Rodríguez, J. Blanco
Barthol, P.
Iniesta, J. C. del Toro
Gandorfer, A.
Gizon, L.
Hirzberger, J.
Knölker, Michael
Pillet, V. Martínez
Suárez, D. Orozco
Schmidt, W.
Publisher UCAR/NCAR - Library
Publication Date 2017-03-24T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T19:12:32.718960
Metadata Record Identifier edu.ucar.opensky::articles:19685
Metadata Language eng; USA
Suggested Citation Jafarzadeh, S., Rutten, R. J., Solanki, S. K., Wiegelmann, T., Riethmüller, T. L., Noort, M. van, Szydlarski, M., Rodríguez, J. Blanco, Barthol, P., Iniesta, J. C. del Toro, Gandorfer, A., Gizon, L., Hirzberger, J., Knölker, Michael, Pillet, V. Martínez, Suárez, D. Orozco, Schmidt, W.. (2017). Slender Ca II H fibrils mapping magnetic fields in the low solar chromosphere. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7qz2csx. Accessed 31 January 2025.

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