Anchuan Song's research while affiliated with University of Science and Technology of China and other places
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Publications (5)
It is widely accepted that eruptive phenomena on the Sun are related to the solar magnetic field, which is closely tied to the observed magnetic concentrations (MCs). Therefore, studying MCs is critical in order to understand the origin and evolution of all forms of solar activity. In this paper, we investigate the statistics of characteristic phys...
Power-law distributions have been studied as a significant characteristic of nonlinear dissipative systems. Since discovering the power-law distribution of solar flares that was later extended to nanoflares and stellar flares, it has been widely accepted that different scales of flares share the same physical process. Here we present the newly deve...
Power-law distributions have been studied as a significant characteristic of non-linear dissipative systems. Since discovering the power-law distribution of solar flares that was later extended to nano-flares and stellar flares, it has been widely accepted that different scales of flares share the same physical process. Here, we present the newly d...
Introduction: Large-scale solar eruptive activities have a close relationship with coronal magnetic flux ropes. Previous numerical studies have found that the equilibrium of a coronal flux rope system could be disrupted if the axial magnetic flux of the rope exceeds a critical value, so that the catastrophe occurs, initiating the flux rope to erupt...
Large-scale solar eruptive activities have a close relationship with coronal magnetic flux ropes. Previous numerical studies have found that the equilibrium of a coronal flux rope system could be disrupted if the axial magnetic flux of the rope exceeds a critical value, so that the catastrophe occurs, initiating the flux rope to erupt. Further stud...
Citations
... Coronal jets, as shown by Liu et al. (2023), also exhibit a power-law distribution of their frequency just as solar and stellar flares (Crosby et al. 1993;Benz & Krucker 1999;Parnell & Jupp 2000;Shibayama et al. 2013;Cliver et al. 2022). The physical mechanism responsible for the eruption of solar coronal jets is believed to be magnetic interchange reconnection between closed and open magnetic field lines (Shibata et al. 1992;Canfield et al. 1996;Shibata et al. 2007;Moore et al. 2010;Pariat et al. 2015). ...
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... Therefore, we suggest that a kink instability happens. A trigger is generally necessary to excite the kink instability, and the trigger resulting in loss of equilibrium could be an oscillation and mass drainage (Bi et al., 2014;Fan, 2020), magnetic reconnection in the rope system (Zhang et al., 2023a) including the one happening in the breakout model (Kumar et al., 2023). The decay index is calculated using an HMI Carrington magnetogram and is found to be around 1 at the height of PRO-S, just reaching the lower limit for the torus instability (1 to 1.5). ...
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