TY  - JOUR
A1  - Xue, Zhike
A1  - Yan, Xiaoli
A1  - Cheng, Xin
A1  - Yang, Liheng
A1  - Su, Yingna
A1  - Kliem, Bernhard
A1  - Zhang, Jun
A1  - Liu, Zhong
A1  - Bi, Yi
A1  - Xiang, Yongyuan
A1  - Yang, Kai
A1  - Zhao, Li
T1  - Observing the release of twist by magnetic reconnection in a solar filament eruption
JF  - Nature Communications
N2  - Magnetic reconnection is a fundamental process of topology change and energy release, taking place in plasmas on the Sun, in space, in astrophysical objects and in the laboratory. However, observational evidence has been relatively rare and typically only partial. Here we present evidence of fast reconnection in a solar filament eruption using high-resolution H-alpha images from the New Vacuum Solar Telescope, supplemented by extreme ultraviolet observations. The reconnection is seen to occur between a set of ambient chromospheric fibrils and the filament itself. This allows for the relaxation of magnetic tension in the filament by an untwisting motion, demonstrating a flux rope structure. The topology change and untwisting are also found through nonlinear force-free field modelling of the active region in combination with magnetohydrodynamic simulation. These results demonstrate a new role for reconnection in solar eruptions: the release of magnetic twist.
Y1  - 2016
U6  - https://doi.org/10.1038/ncomms11837
SN  - 2041-1723
VL  - 7
PB  - Nature Publ. Group
CY  - London
ER  -