Slender Ca II H Fibrils Mapping Magnetic Fields in the Low Solar Chromosphere

S. Jafarzadeh; R. J. Rutten; S. K. Solanki; T. Wiegelmann; T. L. Riethmüller; M. Van Noort; M. Szydlarski; J. Blanco Rodríguez; P. Barthol; J. C.Del Toro Iniesta; A. Gandorfer; L. Gizon; J. Hirzberger; M. Knölker; V. Martínez Pillet; D. Orozco Suárez; W. Schmidt

doi:10.3847/1538-4365/229/1/11

Slender Ca II H Fibrils Mapping Magnetic Fields in the Low Solar Chromosphere

S. Jafarzadeh, R. J. Rutten, S. K. Solanki, T. Wiegelmann, T. L. Riethmüller, M. Van Noort, M. Szydlarski, J. Blanco Rodríguez, P. Barthol, J. C.Del Toro Iniesta, A. Gandorfer, L. Gizon, J. Hirzberger, M. Knölker, V. Martínez Pillet, D. Orozco Suárez, W. Schmidt

Center for Space Science

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English (US)
Article number	11
Journal	Astrophysical Journal, Supplement Series
Volume	229
Issue number	1
DOIs	https://doi.org/10.3847/1538-4365/229/1/11
State	Published - Mar 2017

Keywords

Sun: chromosphere
Sun: magnetic fields
methods: observational

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4365/229/1/11

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Jafarzadeh, S., Rutten, R. J., Solanki, S. K., Wiegelmann, T., Riethmüller, T. L., Noort, M. V., Szydlarski, M., Rodríguez, J. B., Barthol, P., Iniesta, J. C. D. T., Gandorfer, A., Gizon, L., Hirzberger, J., Knölker, M., Pillet, V. M., Suárez, D. O., & Schmidt, W. (2017). Slender Ca II H Fibrils Mapping Magnetic Fields in the Low Solar Chromosphere. Astrophysical Journal, Supplement Series, 229(1), Article 11. https://doi.org/10.3847/1538-4365/229/1/11

Jafarzadeh, S, Rutten, RJ, Solanki, SK, Wiegelmann, T, Riethmüller, TL, Noort, MV, Szydlarski, M, Rodríguez, JB, Barthol, P, Iniesta, JCDT, Gandorfer, A, Gizon, L, Hirzberger, J, Knölker, M, Pillet, VM, Suárez, DO & Schmidt, W 2017, 'Slender Ca II H Fibrils Mapping Magnetic Fields in the Low Solar Chromosphere', Astrophysical Journal, Supplement Series, vol. 229, no. 1, 11. https://doi.org/10.3847/1538-4365/229/1/11

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abstract = "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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doi = "10.3847/1538-4365/229/1/11",

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AU - Jafarzadeh, S.

AU - Rutten, R. J.

AU - Solanki, S. K.

AU - Wiegelmann, T.

AU - Riethmüller, T. L.

AU - Noort, M. Van

AU - Szydlarski, M.

AU - Rodríguez, J. Blanco

AU - Barthol, P.

AU - Iniesta, J. C.Del Toro

AU - Gandorfer, A.

AU - Gizon, L.

AU - Hirzberger, J.

AU - Knölker, M.

AU - Pillet, V. Martínez

AU - Suárez, D. Orozco

AU - Schmidt, W.

PY - 2017/3

Y1 - 2017/3

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AB - 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.

KW - Sun: chromosphere

KW - Sun: magnetic fields

KW - methods: observational

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Slender Ca II H Fibrils Mapping Magnetic Fields in the Low Solar Chromosphere

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Keywords

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