Disintegration of an eruptive filament via interactions with quasi-separatrix layers

  • Rui Liu
  • Jun Chen
  • YuMing Wang


The disintegration of solar filaments via mass drainage is a frequently observed phenomenon during a variety of filament activities. It is generally considered that the draining of dense filament material is directed by both gravity and magnetic field, yet the detailed process remains elusive. Here we report on a partial filament eruption during which filament material drains downward to the surface not only along the filament’s legs, but to a remote flare ribbon through a fan-out curtain-like structure. It is found that the magnetic configuration is characterized by two conjoining dome-like quasi-sepratrix layers (QSLs). The filament is located underneath one QSL dome, whose footprint apparently bounds the major flare ribbons resulting from the filament eruption, whereas the remote flare ribbon matches well with the other QSL dome’s far-side footprint. We suggest that the interaction of the filament with the overlying QSLs results in the splitting and disintegration of the filament.


magnetic reconnection filament eruptions flares coronal mass ejection 

PACS number(s)

96.60.Iv 96.60.qf 96.60.qe 


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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary SciencesUniversity of Science and Technology of ChinaHefeiChina

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