Witnessing Tether-cutting Reconnection at the Onset of a Partial Eruption

@article{Chen2018WitnessingTR,
  title={Witnessing Tether-cutting Reconnection at the Onset of a Partial Eruption},
  author={Hechao 何超 Chen 陈 and Yadan Duan and Jiayan Yang and Bo Yang and Jun Dai},
  journal={The Astrophysical Journal},
  year={2018},
  volume={869}
}
In this paper, we study the onset process of a solar eruption on 2015 February 21, focusing on its unambiguous precursor phase. With multiwavelength imaging observations from the Atmospheric Imaging Assembly (AIA), definitive tether-cutting (TC) reconnection signatures, i.e., flux convergence and cancellation, bidirectional jets, and topology change of hot loops, were clearly observed below the pre-eruption filament. As TC reconnection progressed between the sheared arcades that enveloped the… 

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