| Abstract : | We report characteristics of filament eruptions that did not produce coronal mass ejections (CMEs). We examined 354 filament eruptions, each of which were located close to the disk center in diffuse remnant magnetic fields of decayed or compact active regions. These events were well observed in full-disk movies in He 304 and Fe XII, HMI magnetographs and had good coronagraph coverage. Of the 354 eruptions, 232 events were associated with two ribbon flares. Out of the 232 eruptions with two ribbon flares 186 were accompanied with significant CME. The 122 events that did not show two ribbon flares, 28 were accompanied by small CMEs. In most cases, the CMEs with non-flare associated eruptions were enhanced streamers. Even though these eruptions were indistinguishable in their magnetic setting, we study their origin by observing the morphological flare properties in eruptive motion of the filament in the He 304 and Fe XII movies. From this result, we conclude that the non-CME- producing filament eruptions are confined eruptions like the confined filament eruptions in active regions. We take the similarity of the confined and eruptive quiescent filament eruptions with their active-region counterparts to favor runaway tether-cutting reconnection for unleashing the magnetic explosion in all these eruptions. |
