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| Paper: |
Transverse Oscillation of a Filament Triggered by an Extreme Ultraviolet Wave |
| Volume: |
489, Solar Polarization 7 |
| Page: |
53 |
| Authors: |
Xue, Z. K.; Yan, X. L.; Qu, Z. Q.; Zhao, L. |
| Abstract: |
We analyze a case of transverse oscillation of a filament triggered by an extreme ultraviolet (EUV) wave on 2011 September 7 observed by the Atmospheric Imaging Assembly (AIA) and the Helioseismic and Magnetic Imager (HMI) aboard the Solar Dynamics Observatory (SDO). The EUV wave first appeared at 22:35 UT after a filament (F1) eruption in the NOAA active region 11283 and then propagated toward the northwest with a speed of 690 km s-1. When the EUV wave propagated through another filament (F2), it caused F2 to oscillate transversely. The oscillation period and damping time are calculated by a damped cosine function, and they are around 1140 s and 5920 s respectively. Based on coronal seismology, we estimate the average values of magnetic fields inside and outside the oscillating filament, about 17.6 G and 7.4 G respectively. |
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