The Pre-CME Sun

  title={The Pre-CME Sun},
  author={Nat Gopalswamy and Zoran Miki{\'c} and Dalmiro Jorge Filipe Maia and David Alexander and Hebe Cremades and Pierre Kaufmann and Durgesh C. Tripathi and Y.-M. Wang},
  journal={Space Science Reviews},
The coronal mass ejection (CME) phenomenon occurs in closed magnetic field regions on the Sun such as active regions, filament regions, transequatorial interconnection regions, and complexes involving a combination of these. This chapter describes the current knowledge on these closed field structures and how they lead to CMEs. After describing the specific magnetic structures observed in the CME source region, we compare the substructures of CMEs to what is observed before eruption. Evolution… 

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