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A quiescent prominence was observed at north-west limb of the Sun usingdifferent channels of Atmospheric Imaging Assembly (AIA) onboard Solar DynamicsObservatory (SDO). We report and analyse twisting/swirling motions during andafter the prominence eruption. We segregate the observed rotational motionsinto small and large scale. Small scale rotational motions manifest in thebarbs of the prominence while the large scale rotation manifests as the rollmotion during the prominence eruption. We noticed that both footpoints of theprominence rotate in the counter-clockwise direction. We propose that similarsense of rotation in both footpoints leads to prominence eruption. Theprominence erupted asymmetrically near the southern footpoint which may be dueto uneven mass distribution and location of the cavity near southern footpoint.Furthermore, we study the swirling motion of the plasma along differentcircular paths in the cavity of the prominence after the prominence eruption.The rotational velocities of the plasma moving along different circular pathsare estimated to be $\sim$ 9-40 km s$^{-1}$. These swirling motions can beexplained in terms of twisted magnetic field lines in the prominence cavity.Finally, we observe the twist built up in the prominence, being carried away bythe coronal mass ejection (CME) as seen in the Large Angle SpectrometricCoronagraph (LASCO) onboard Solar and Heliospheric Observatory (SOHO).

Twisting/Swirling Motions During a Prominence Eruption as seen from SDO/AIA