Solar prominences usually have a horizontally elongated body with many feet extending to the solar surface,resembling a multiarch bridge with many bridge piers.The basic mechanism by which solar prominences acquire th...Solar prominences usually have a horizontally elongated body with many feet extending to the solar surface,resembling a multiarch bridge with many bridge piers.The basic mechanism by which solar prominences acquire these common structures during their evolution,however,remains an unresolved question.For the first time,our three-dimensional magneto-frictional simulation,driven by supergranular motions,self-consistently replicates the commonly observed multi-arch bridge morphology and its characteristic structures of solar quiescent prominences in a magnetic flux rope.In comparison with traditional views,our simulations demonstrate that the spine,feet,and voids(bubbles) are inherent prominence structures spontaneously forming as the flux rope evolves to a mature state.The voids mainly consist of legs of sheared magnetic loops caused by unbalanced supergranular flows,and prominence feet settle at the bottom of helical field lines piled up from the photosphere to the spine.Similarities between the simulated prominences and observed real prominences by the Chinese Hα Solar Explorer,the New Vacuum Solar Telescope,and NASA's Solar Dynamics Observatory suggest the high validity of our model.This work corroborates the pivotal role of photospheric supergranulation as a helicity injection source in the formation and shaping of quiescent prominence structures within the solar atmosphere,thereby paving a new avenue for future investigations into their fine dynamics and stability.展开更多
基金supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No.XDB0560000)the National Natural Science Foundation of China (Grant Nos.12073022,and 11803031)+5 种基金the Key Research Program of Frontier Sciences,CAS (Grant No.ZDBS-LYSLH013)the Scientific Research and Innovation Project of Postgraduate Students in the Academic Degree of Yunnan University (Grant Nos.KC-23233895,and KC-24248785)the Yunnan Key Laboratory of Solar Physics and Space Science (Grant No.202205AG070009)supported by the National Natural Science Foundation of China (Grant No.12573061)the Yunnan Key Laboratory of Solar Physics and Space Science(Grant No.YNSPCC202210)the Yunnan Provincial Basic Research Project (Grant No.202401CF070165)。
文摘Solar prominences usually have a horizontally elongated body with many feet extending to the solar surface,resembling a multiarch bridge with many bridge piers.The basic mechanism by which solar prominences acquire these common structures during their evolution,however,remains an unresolved question.For the first time,our three-dimensional magneto-frictional simulation,driven by supergranular motions,self-consistently replicates the commonly observed multi-arch bridge morphology and its characteristic structures of solar quiescent prominences in a magnetic flux rope.In comparison with traditional views,our simulations demonstrate that the spine,feet,and voids(bubbles) are inherent prominence structures spontaneously forming as the flux rope evolves to a mature state.The voids mainly consist of legs of sheared magnetic loops caused by unbalanced supergranular flows,and prominence feet settle at the bottom of helical field lines piled up from the photosphere to the spine.Similarities between the simulated prominences and observed real prominences by the Chinese Hα Solar Explorer,the New Vacuum Solar Telescope,and NASA's Solar Dynamics Observatory suggest the high validity of our model.This work corroborates the pivotal role of photospheric supergranulation as a helicity injection source in the formation and shaping of quiescent prominence structures within the solar atmosphere,thereby paving a new avenue for future investigations into their fine dynamics and stability.
