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Peer-reviewedCC BY 4.0The Astrophysical Journal

High-frequency Transverse Waves in Chromospheric Fibrils Revealed by DKIST

  • Qifan Dong1,2
  • Xiaoli Yan1,3
  • Zhike Xue1,3
  • Liheng Yang1,3
  • Jincheng Wang1,3
  • Yadan Duan1,3
  • Zhe Xu1,3
  1. 1Chinese Academy of Sciences
  2. 2University of Chinese Academy of Sciences
  3. 3Yunnan Key Laboratory of Solar Physics and Space Science
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Abstract

Chromospheric fibrils are ubiquitous dynamical structures that can support magnetohydrodynamic waves and may contribute to energy transport in the solar atmosphere. Using high-resolution observations from the Visible Broadband Imager (VBI) onboard the Daniel K. Inouye Solar Telescope (DKIST), we investigate transverse oscillations of H α fibrils. Our observations encompass both quiet-Sun (QS) and active regions. The results reveal that high-frequency transverse oscillations are highly prevalent in fibrils across different magnetic environments. The detected oscillations exhibit typical periods of 56 ± 49 s, displacement amplitudes of 37 ± 25 km, velocity amplitudes of 6 ± 4 km s ⁻¹ , and phase velocities of 21 ± 13 km s ⁻¹ . Under typical chromospheric conditions, the estimated wave energy flux ranges from 20 to 200 W m ⁻² . The characteristics of these transverse oscillations are consistent with those of Alfvénic kink-mode waves. Our results reveal the existence of the high-frequency, small-amplitude transverse waves in chromospheric fibrils and provide new constraints on their contribution to the chromospheric and coronal heating.

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Cite

BibTeXRIS
BibTeX
@article{dong2026highfrequency,
  title = {{High-frequency Transverse Waves in Chromospheric Fibrils Revealed by DKIST}},
  author = {Qifan Dong and Xiaoli Yan and Zhike Xue and Liheng Yang and Jincheng Wang and Yadan Duan and Zhe Xu},
  journal = {The Astrophysical Journal},
  year = {2026},
  month = oct,
  doi = {10.3847/1538-4357/aea093},
  url = {https://iopscience.iop.org/article/10.3847/1538-4357/aea093},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - High-frequency Transverse Waves in Chromospheric Fibrils Revealed by DKIST
AU  - Qifan Dong
AU  - Xiaoli Yan
AU  - Zhike Xue
AU  - Liheng Yang
AU  - Jincheng Wang
AU  - Yadan Duan
AU  - Zhe Xu
PY  - 2026
DA  - 2026/10/15
JO  - The Astrophysical Journal
DO  - 10.3847/1538-4357/aea093
UR  - https://iopscience.iop.org/article/10.3847/1538-4357/aea093
AB  - Chromospheric fibrils are ubiquitous dynamical structures that can support magnetohydrodynamic waves and may contribute to energy transport in the solar atmosphere. Using high-resolution observations from the Visible Broadband Imager (VBI) onboard the Daniel K. Inouye Solar Telescope (DKIST), we investigate transverse oscillations of H α fibrils. Our observations encompass both quiet-Sun (QS) and active regions. The results reveal that high-frequency transverse oscillations are highly prevalent in fibrils across different magnetic environments. The detected oscillations exhibit typical periods of 56 ± 49 s, displacement amplitudes of 37 ± 25 km, velocity amplitudes of 6 ± 4 km s ⁻¹ , and phase velocities of 21 ± 13 km s ⁻¹ . Under typical chromospheric conditions, the estimated wave energy flux ranges from 20 to 200 W m ⁻² . The characteristics of these transverse oscillations are consistent with those of Alfvénic kink-mode waves. Our results reveal the existence of the high-frequency, small-amplitude transverse waves in chromospheric fibrils and provide new constraints on their contribution to the chromospheric and coronal heating.
SN  - 0004-637X
SN  - 1538-4357
ER  -