Case Study of Four Homologous Large-Scale Coronal Waves Observed on 2010 April 28 and 29

Abstract

On 2010 April 28 and 29, the Solar TErrestrial Relations Observatory B/Extreme Ultraviolet Imager observed four homologous large-scale coronal waves, the so-called EIT-waves, within 8 hr. All waves emerged from the same source active region, were accompanied by weak flares and faint coronal mass ejections, and propagated into the same direction at constant velocities in the range of ~220-340 km s-1. The last of these four coronal wave events was the strongest and fastest, with a velocity of 337 +/- 31 km s-1 and a peak perturbation amplitude of ~1.24, corresponding to a magnetosonic Mach number of Mms ~ 1.09. The magnetosonic Mach numbers and velocities of the four waves are distinctly correlated, suggestive of the nonlinear fast-mode magnetosonic wave nature of the events. We also found a correlation between the magnetic energy buildup times and the velocity and magnetosonic Mach number.

References in corpus (2)

• High cadence observations of a global coronal wave by EUVI/STEREO
• The Kinematics of a Globally Propagating Disturbance in the Solar Corona

Cited by in corpus (8)

• Advances in Observing Various Coronal EUV Waves in the SDO Era and Their Seismological Applications (Invited Review)
• Statistical Analysis of Large-scale EUV Waves Observed by STEREO/EUVI
• 3D reconstructions of EUV wave front heights and their influence on wave kinematics
• The causes of quasi-homologous CMEs
• Twin extreme ultraviolet waves in the solar corona
• Geometrical properties of the interaction between oblique incoming coronal waves and coronal holes
• Three-dimensional analyses of an aspherical coronal mass ejection and its driven shock
• A new method for estimating global coronal wave properties from their interaction with solar coronal holes