Type I Solar Radio Bursts Modulated by Solar Flares

@misc{li2026type,
  title = {{Type I Solar Radio Bursts Modulated by Solar Flares}},
  author = {Yutong Li and Chuanyang Li and Yanke Tang and Ning Gai and Zichuan Li and Zhe Cui and Yang Gao and Yifan Wang and Xiaodong Xu and Xiaodi Huo},
  howpublished = {arXiv},
  year = {2026},
  month = aug,
  doi = {10.48550/arxiv.2608.29744},
  eprint = {2608.29744},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2608.29744},
}

TY  - UNPB
TI  - Type I Solar Radio Bursts Modulated by Solar Flares
AU  - Yutong Li
AU  - Chuanyang Li
AU  - Yanke Tang
AU  - Ning Gai
AU  - Zichuan Li
AU  - Zhe Cui
AU  - Yang Gao
AU  - Yifan Wang
AU  - Xiaodong Xu
AU  - Xiaodi Huo
PY  - 2026
DA  - 2026/08/30
PB  - arXiv
DO  - 10.48550/arxiv.2608.29744
UR  - https://arxiv.org/abs/2608.29744
AB  - Type I solar radio bursts (noise storms) are persistent meter-wave nonthermal emissions above active regions, with their occurrence and proper?ties closely related to the local magnetic configuration and nonthermal electron acceleration. This study examines a type I noise storm on 24 December 2023 and its relation to flare activity. The noise-storm source was co-spatial with active region AR 3529 and showed frequency-dependent spatial dispersion. The associated M2.9 flare strongly modulated the emission, with the storm intensity decreasing at flare onset, recovering afterward, and shifting to higher frequencies. Based on multiwavelength observations, we suggest that pre-flare small-scale reconnection supplied nonthermal electrons to overlying closed magnetic struc?tures and maintained the storm. During the flare, magnetic reconnection above the active region produced bidirectional plasma ejections and type III bursts with bidirectional frequency drifts; the gradually decreasing starting frequency of these bursts may indicate an upward-moving reconnection site. The resulting magnetic reconfiguration disrupted electron trapping and suppressed the storm, whereas post-flare magnetic recovery allowed the emission to resume. These results show that flares can modulate type I noise storms through magnetic restructuring and provide insight into the generation mechanism of noise storms.
ER  -