Miao, Yu Hu and Liu, Yu and Shen, Yuan Deng and Li, Hong Bo and Abidin, Zamri Zainal and Elmhamdi, Abouazza and Kordi, Ayman S. (2019) A Quasi-periodic Propagating Wave and Extreme-ultraviolet Waves Excited Simultaneously in a Solar Eruption Event. The Astrophysical Journal Letters, 871 (1). L2. ISSN 2041-8205, DOI https://doi.org/10.3847/2041-8213/aafaf9.
Full text not available from this repository.Abstract
Quasi-periodic fast-propagating (QFP) magnetosonic waves and extreme-ultraviolet (EUV) waves were proposed to be driven by solar flares and coronal mass ejections (CMEs), respectively. In this Letter, we present a detailed analysis of an interesting event in which we find that both QFP magnetosonic waves and EUV waves are excited simultaneously in one solar eruption event. The co-existence of the two wave phenomena offers an excellent opportunity to explore their driving mechanisms. The QFP waves propagate in a funnel-like loop system with a speed of 682-837 km s -1 and a lifetime of 2 minutes. On the contrary, the EUV waves, which present a faster component and a slower component, propagate in a wide angular extent, experiencing reflection and refraction across a magnetic quasi-separatrix layer. The faster component of the EUV waves travels with a speed of 412-1287 km s -1 , whereas the slower component travels with a speed of 246-390 km s -1 . The lifetime of the EUV waves is ∼15 minutes. It is revealed that the faster component of the EUV waves is cospatial with the first wavefront of the QFP wave train. The QFP waves have a period of about 45±5 s, which is absent in the associated flares. All of these results imply that QFP waves can also be excited by mass ejections, including CMEs or jets. © 2019. The American Astronomical Society. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Sun: corona; Sun: flares; Sun: magnetic fields; Sun: oscillations; waves |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 17 Mar 2020 01:49 |
| Last Modified: | 17 Mar 2020 01:49 |
| URI: | http://eprints.um.edu.my/id/eprint/24032 |
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