We present and interpret the observations of extreme ultraviolet (EUV) waves associated with a filament eruption on 2011 May 11.The filament eruption also produces a small B-class two ribbon flare and a coronal mass ejection (CME). The event is observed by the Solar Dynamic Observatory (SDO) with high spatio-temporal resolution data recorded by Atmospheric Imaging Assembly (AIA). As the filament erupts, we observe two types of EUV waves (slow and fast) propagating outwards. The faster EUV wave has a propagation velocity of ~ 500 km/s and the slower EUV wave has an initial velocity of ~ 120 km/s. We report for the first time that not only the slower EUV wave stops at a magnetic separatrix to form bright stationary fronts, but also the faster EUV wave transits a magnetic separatrix, leaving another stationary EUV front behind.
@article{arxiv.1602.08693,
title = {Peculiar Stationary EUV Wave Fronts in the eruption on 2011 May 11},
author = {R. Chandra and P. F. Chen and A. Fulara and A. K. Srivastava and W. Uddin},
journal= {arXiv preprint arXiv:1602.08693},
year = {2016}
}
Comments
24 pages, 6 Figures, accepted for the publication in Astrophysical Journal