Projection effects in coronal dimmings and associated EUV wave event

Abstract

We investigate the high-speed ($v>$ 1000 km s${}^{-1}$) extreme-ultraviolet (EUV) wave associated with an X1.2 flare and coronal mass ejection (CME) from NOAA active region 11283 on 2011 September 6 (SOL2011-09-06T22:12). This EUV wave features peculiar on-disk signatures, in particular we observe an intermittent "disappearance" of the front for 120 s in SDO/AIA 171, 193, 211 Å data, whereas the 335 Å filter, sensitive to hotter plasmas (T$\sim$2.5 MK), shows a continuous evolution of the wave front. The eruption was also accompanied by localized coronal dimming regions. We exploit the multi-point quadrature position of SDO and STEREO-A, to make a thorough analysis of the EUV wave evolution, with respect to its kinematics and amplitude evolution and reconstruct the SDO line-of-sight (LOS) direction of the identified coronal dimming regions in STEREO-A. We show that the observed intensities of the dimming regions in SDO/AIA depend on the structures that are lying along their LOS and are the combination of their individual intensities, e.g. the expanding CME body, the enhanced EUV wave and CME front. In this context, we conclude that the intermittent disappearance of the EUV wave in the AIA 171, 193, 211 Å filters, which are channels sensitive to plasma with temperatures below $\sim$2 MK is also caused by such LOS integration effects. These observations clearly demonstrate that single-view image data provide us with limited insight to correctly interpret coronal features.

arXiv commentaccepted for publication in the Astrophysical Journal

References in corpus (28)

• Advances in Observing Various Coronal EUV Waves in the SDO Era and Their Seismological Applications (Invited Review)
• Combined STEREO/RHESSI study of CME acceleration and particle acceleration in solar flares
• First observations of a dome-shaped large-scale coronal EUV wave
• Observations and Interpretation of a Low Coronal Shock Wave Observed in the EUV by the SDO/AIA
• High cadence observations of a global coronal wave by EUVI/STEREO
• MHD Simulation of a Sigmoid Eruption of Active Region 11283
• The Kinematics of a Globally Propagating Disturbance in the Solar Corona
• Numerical Simulation of an EUV Coronal Wave Based on the February 13, 2009 CME Event Observed by STEREO
• 'EUV Waves' are Waves: First Quadrature Observations of an EUV Wave from STEREO
• What can we learn about solar coronal mass ejections, coronal dimmings, and Extreme-Ultraviolet jets through spectroscopic observations?
• Large-scale Coronal Propagating Fronts in Solar Eruptions as Observed by the Atmospheric Imaging Assembly on Board the Solar Dynamics Observatory\,--\,An Ensemble Study
• On the Nature and Genesis of EUV Waves: A Synthesis of Observations from SOHO, STEREO, SDO, and Hinode
• Large-scale Bright Fronts in the Solar Corona: A Review of "EIT waves"
• Investigation of the Formation and Separation of An EUV Wave from the Expansion of A Coronal Mass Ejection
• STEREO quadrature observations of the 3D structure and driver of a global coronal wave
• A Chain of Winking (Oscillating) Filaments Triggered by an Invisible Extreme-Ultraviolet Wave
• What is the Nature of EUV Waves? First STEREO 3D Observations and Comparison with Theoretical Models
• Secondary Waves, and/or the "Reflection" From and "Transmission" Through a Coronal Hole of an EUV Wave Associated With the 2011 February 15 X2.2 Flare Observed With SDO/AIA and STEREO/EUVI
• Evolution of Flare Ribbons, Electric Currents and Quasi-separatrix Layers During an X-class Flare
• Statistical Analysis of Large-scale EUV Waves Observed by STEREO/EUVI
• Deceleration and Dispersion of Large-scale Coronal Bright Fronts
• Plasma diagnostics of an EIT wave observed by Hinode/EIS and SDO/AIA
• Coronal response to an EUV wave from DEM analysis
• 4D Modeling of CME expansion and EUV dimming observed with STEREO/EUVI
• Relation between the 3D-geometry of the coronal wave and associated CME during the 26 April 2008 event
• Coronal Dimmings and the Early Phase of a CME Observed with STEREO and Hinode/EIS
• The Relation Between Large-Scale Coronal Propagating Fronts and Type II Radio Bursts
• Time Evolution Altitude of an Observed Coronal Wave

Cited by in corpus (9)

• Statistics of coronal dimmings associated with coronal mass ejections. I. Characteristic dimming properties and flare association
• On the detection of coronal dimmings and the extraction of their characteristic properties
• On flare-CME characteristics from Sun to Earth combining remote-sensing image data with in-situ measurements supported by modeling
• Magnetohydrodynamic Simulation of Magnetic Null-point Reconnections and Coronal dimmings during the X2.1 flare in NOAA AR 11283
• Plasma diagnostics of coronal dimming events
• Coronal dimmings associated with coronal mass ejections on the solar limb
• Evidence for flare-accelerated particles in large scale loops in the behind-the-limb gamma-ray solar flare of September 29, 2022
• Buildup of the Magnetic Flux Ropes in Homologous Solar Eruptions
• Investigation of the Two-Dimensional Velocity Field of the Large-Scale Coronal Wave from September 6, 2011 using the SOLERwave Tool