Extending Counter-streaming Motion from an Active Region Filament to a Sunspot Light Bridge

@article{Wang2017ExtendingCM,
  title={Extending Counter-streaming Motion from an Active Region Filament to a Sunspot Light Bridge},
  author={Haimin Wang and Rui Liu and Qin Li and Chang Liu and Na Deng and Yan Xu and Ju Jing and Yuming Wang and Wenda Cao},
  journal={The Astrophysical Journal Letters},
  year={2017},
  volume={852}
}
We analyze high-resolution observations from the 1.6 m telescope at Big Bear Solar Observatory that cover an active region filament. Counter-streaming motions are clearly observed in the filament. The northern end of the counter-streaming motions extends to a light bridge, forming a spectacular circulation pattern around a sunspot, with clockwise motion in the blue wing and counterclockwise motion in the red wing, as observed in the Hα off-bands. The apparent speed of the flow is around 10–60… 

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