Back to Search Start Over

UNDERSTANDINGSDO/AIA OBSERVATIONS OF THE 2010 JUNE 13 EUV WAVE EVENT: DIRECT INSIGHT FROM A GLOBAL THERMODYNAMIC MHD SIMULATION

Authors :
Bart van der Holst
Igor V. Sokolov
Cooper Downs
Ilia I. Roussev
Noé Lugaz
Source :
The Astrophysical Journal. 750:134
Publication Year :
2012
Publisher :
American Astronomical Society, 2012.

Abstract

In this work, we present a comprehensive observation and modeling analysis of the 2010 June 13 extreme-ultraviolet (EUV) wave observed by the Atmospheric Imaging Assembly (AIA) aboard the Solar Dynamics Observatory (SDO). Due to extreme advances in cadence, resolution, and bandpass coverage in the EUV regime, the AIA instrument offers an unprecedented ability to observe the dynamics of large-scale coronal wave-like transients known as EUV waves. To provide a physical analysis and further complement observational insight, we conduct a three-dimensional, time-dependent thermodynamic MHD simulation of the eruption and associated EUV wave, and employ forward modeling of EUV observables to compare the results directly observations. We focus on two main aspects: (1) the interpretation of the stark thermodynamic signatures in the multi-filter AIA data within the propagating EUV wave front, and (2) an in-depth analysis of the simulation results and their implication with respect to EUV wave theories. Multiple aspects, including the relative phases of perturbed variables, suggest that the outer, propagating component of the EUV transient exhibits the behavior of a fast-mode wave. We also find that this component becomes decoupled from the evolving structures associated with the coronal mass ejection that are also visible, providing a clear distinction between wave and non-wave mechanisms at play.

Details

ISSN :
15384357 and 0004637X
Volume :
750
Database :
OpenAIRE
Journal :
The Astrophysical Journal
Accession number :
edsair.doi...........cc68d736c4862cf83be447e103fc9ce8
Full Text :
https://doi.org/10.1088/0004-637x/750/2/134