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PreprintCC BY 4.0arXiv

High-Frequency Transverse Waves in Chromospheric Fibrils Revealed by DKIST

  • Qifan Dong
  • Xiaoli Yan
  • Zhike Xue
  • Liheng Yang
  • Jincheng Wang
  • Yadan Duan
  • Zhe Xu
Open at sourcePDFDOICite

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 Hα fibrils. Our observations encompass both quiet-Sun 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 providing new constraints on their contribution to the chromospheric and coronal heating.

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Cite

BibTeXRIS
BibTeX
@misc{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},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.19739},
  eprint = {2610.19739},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.19739},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
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  - 2026/10/14
PB  - arXiv
DO  - 10.48550/arxiv.2610.19739
UR  - https://arxiv.org/abs/2610.19739
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 Hα fibrils. Our observations encompass both quiet-Sun 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 providing new constraints on their contribution to the chromospheric and coronal heating.
ER  -