A solar flare disturbing a light wall above a sunspot light bridge
Yijun Hou, Jun Zhang, Ting Li, Shuhong Yang, Leping Li, Xiaohong Li

TL;DR
This study observes a light wall above a sunspot light bridge that was disturbed by a solar flare, revealing how magnetic reconnection affects the wall's oscillation amplitude and orientation.
Contribution
It provides new insights into the magnetic coupling between light walls and flare loops, demonstrating how solar flares influence light wall oscillations.
Findings
Oscillation amplitude increased from 0.5 Mm to 1.6 Mm before the flare.
Oscillation amplitude decreased to 0.6 Mm after the flare.
Light wall's orientation changed due to magnetic reconnection.
Abstract
With the high-resolution data from the Interface Region Imaging Spectrograph, we detect a light wall above a sunspot light bridge in the NOAA active region (AR) 12403. In the 1330 A slit-jaw images, the light wall is brighter than the ambient areas while the wall top and base are much brighter than the wall body, and it keeps oscillating above the light bridge. A C8.0 flare caused by a filament activation occurred in this AR with the peak at 02:52 UT on 2015 August 28, and the flare's one ribbon overlapped the light bridge which was the observational base of the light wall. Consequently, the oscillation of the light wall was evidently disturbed. The mean projective oscillation amplitude of the light wall increased from 0.5 Mm to 1.6 Mm before the flare, and decreased to 0.6 Mm after the flare. We suggest that the light wall shares a group of magnetic field lines with the flare loops,…
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