Dynamics and Kinematics of the EUV Wave Event on 6 May 2019

TL;DR

This paper analyzes the detailed kinematics of a complex EUV wave event on 6 May 2019, revealing multiple wave features and their interactions with coronal structures using high-resolution solar observations.

Contribution

It provides a comprehensive interpretation of various EUV wave features observed in a single event, enhancing understanding of their physical nature.

Findings

Identification of multiple wave features including fast-mode, pseudo, slow-mode, and stationary fronts.

Observation of wave propagation towards a coronal hole without speed change.

High-resolution analysis clarifies wave interactions and mode conversions.

Abstract

We present here the kinematics of the EUV wave associated with a GOES M1.0-class solar flare, which originates in NOAA AR 12740. The event is thoroughly observed with Atmospheric Imaging Assembly (AIA) onboard Solar Dynamics Observatory (SDO) with high spatio-temporal resolutions. This event displays many features of EUV waves, which are very decisive for the understanding of the nature of EUV waves. These features include: a fast-mode wave, a pseudo wave, a slow-mode wave and stationary fronts, probably due to mode conversion. One fast-mode wave also propagates towards the coronal hole situated close to the north pole and the wave speed does not change when it encounters the coronal hole. We intend to provide self-consistent interpretations for all these different features.