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Homologous large-amplitude Nonlinear fast-mode Magnetosonic Waves Driven by Recurrent Coronal Jets View all abstracts by submitter

Yuandeng Shen   Submitted: 2018-06-07 06:25

The detailed observational analysis of a homologous Extreme-ultraviolet (EUV) wave event is presented to study the driving mechanism and the physical property of the EUV waves, combining high resolution data taken by the Solar Dynamics Observatory and the Solar TErrestrial RElations Observatory. It is observed that four homologous EUV waves originated from the same active region AR11476 within about one hour, and the time separations between consecutive waves were of 8 - 20 minutes. The waves showed narrow arc-shaped wavefronts and propagated in the same direction along a large-scale transequatorial loop system at a speed of 648 - 712 km s-1 and a deceleration of 0.985 - 1.219 km s-12. The EUV waves were accompanied by weak flares, coronal jets, and radio type III bursts, in which the EUV waves were delayed with respect to the start times of the radio type III bursts and coronal jets about 2 - 13 and 4 - 9 minutes, respectively. Different to previous studies of homologous EUV waves, no coronal mass ejections were found in the present event. Based on the observational results and the close temporal the spatial relationship between the EUV waves and the coronal jets, for the first time, we propose that the observed homologous EUV waves were large-amplitude nonlinear fast-mode magnetosonic waves or shocks driven by the associated recurrent coronal jets, resemble the generation mechanism of a piston shock in a tube. In addition, it is found that the recurrent jets were tightly associated with the alternating flux cancellation and emergence in the eruption source region and radio type III bursts.

Authors: Yuandeng Shen; Yu Liu; Ying D. Liu; Jiangtao Su; Zehao Tang; Yuhu Miao
Projects: SDO-AIA

Publication Status: accepted by apj
Last Modified: 2018-06-07 12:34
Go to main E-Print page  Quasi-periodic Pulsations in a Solar Microflare  EUV Waves Driven by Sudden Expansion of Transequatorial Loops Caused by Solar Coronal Jets  Edit Entry  Download Preprint  Delete Entry 

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