Toward a Unified Explanation for the Three-part Structure of Solar Coronal Mass Ejections

Abstract Coronal mass ejections (CMEs) are associated with the eruption of magnetic flux ropes (MFRs), which usually appear as hot channels in active regions and coronal cavities quiet-Sun regions. CMEs often exhibit a classical three-part structure lower corona when imaged white-light coronagraphs, including bright front, dark cavity, core. For several decades, core cavity have been regarded erupted prominence MFR, respectively. However, recent studies clearly demonstrated that both hot-channel MFR can be observed CME The current research presents resulting from on 2010 October 7, observations two vantage perspectives, i.e., edge-on Earth face-on Solar Terrestrial Relations Observatory (STEREO). Our illustrate important results: (1) for first time, erupting is recorded channel-like extreme-ultraviolet passband, analogous to morphology, dubbed warm channel; (2) warm-channel (coronal cavity) passbands evolve into coronagraphs STEREO-A. results suggest we working toward unified explanation CMEs, prominences MFRs (hot or channels) responsible