Fine structures of an EUV wave event from multi-viewpoint observations

Ramesh Chandra, P. F. Chen, Pooja Devi, Reetika Joshi, Brigitte Schmieder, Yong Jae Moon, Wahab Uddin

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In this study, we investigate an extreme ultraviolet (EUV) wave event on 2010 February 11, which occurred as a limb event from the Earth viewpoint and a disk event from the Solar Terrestrial Relations Observatory-Behind viewpoint. We use the data obtained by the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory in various EUV channels. The EUV wave event was launched by a partial prominence eruption. Compared with some EUV wave events in previous works, this EUV wave event contains a faster wave with a speed of ~445±6 kms-1, which we call a coronal Moreton wave, and a slower wave with a speed of ~298 ±5 kms-1, which we call the Extreme Ultraviolet Imaging Telescope (EIT) wave. The coronal Moreton wave is identified as a fast-mode wave and the EIT wave is identified as an apparent propagation due to successive field-line stretching. We also observe a stationary front associated with the fast-mode EUV wave. This stationary front is explained as mode conversion from the coronal Moreton wave to a slow-mode wave near a streamer.

Original languageEnglish
Article number9
JournalAstrophysical Journal
Volume919
Issue number1
DOIs
Publication statusPublished - 20 Sep 2021

Keywords

  • Solar coronal mass ejections (310)
  • Solar coronal waves (1995)
  • Solar prominences (1519)

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