Coronal Mass Ejection Deformation at 0.1 au Observed by WISPR

  title={Coronal Mass Ejection Deformation at 0.1 au Observed by WISPR},
  author={Carlos Roberto Braga and Angelos Vourlidas and Paulette C. Liewer and Phillip C. Hess and Guillermo Stenborg and Pete Riley},
  journal={The Astrophysical Journal},
Although coronal mass ejections (CMEs) resembling flux ropes generally expand self-similarly, deformations along their fronts have been reported in observations and simulations. We present evidence of one CME becoming deformed after a period of self-similar expansion in the corona. The event was observed by multiple white-light imagers on 2021 January 20–22. The change in shape is evident in observations from the heliospheric imagers from the Wide-Field Imager for Solar Probe Plus (WISPR… 

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