Partial Reflection and Trapping of a Fast-mode Wave in Solar Coronal Arcade Loops

Abstract

We report on the first direct observation of a fast-mode wave propagating along and perpendicular to cool (171 Å) arcade loops observed by the SDO/AIA. The wave was associated with an impulsive/compact flare, near the edge of a sunspot. The EUV wavefront expanded radially outward from the flare center and decelerated in the corona from 1060-760 km/s within ~3-4 minute. Part of the EUV wave propagated along a large-scale arcade of cool loops and was partially reflected back to the flare site. The phase speed of the wave was about 1450 km/s, which is interpreted as a fast-mode wave. A second overlying loop arcade, orientated perpendicular to the cool arcade, is heated and becomes visible in the AIA hot channels. These hot loops sway in time with the EUV wave, as it propagated to and fro along the lower loop arcade. We suggest that an impulsive energy release at one of the footpoints of the arcade loops causes the onset of an EUV shock wave that propagates along and perpendicular to the magnetic field.

arXiv commentApJ letters (in press), 8 pages, 5 figures

References in corpus (15)

• MHD Waves and Coronal Seismology: an overview of recent results
• Advances in Observing Various Coronal EUV Waves in the SDO Era and Their Seismological Applications (Invited Review)
• 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
• Direct Imaging by SDO AIA of Quasi-periodic Fast Propagating Waves of ~2000 km/s in the Low Solar Corona
• First Simultaneous Observation of H-alpha Moreton Wave, EUV Wave, and Filament/Prominence Oscillations
• On the Nature and Genesis of EUV Waves: A Synthesis of Observations from SOHO, STEREO, SDO, and Hinode
• First Evidence of Coexisting EIT Wave and Coronal Moreton Wave from SDO/AIA Observations
• 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
• Observational Study Of the Quasi-Periodic Fast Propagating Magnetosonic Waves and the Associated Flare on 2011 May 30
• SDO/AIA Observations of a Reflecting Longitudinal Wave in a Coronal Loop
• Multiwavelength study of a Solar Eruption from AR NOAA 11112: II. Large-Scale Coronal Wave and Loop Oscillation
• Eruption of a plasma blob, associated M-class flare, and large-scale EUV wave observed by SDO
• Multiwavelength Observations of an Eruptive Flare: Evidence for Blast Waves and Break-out
• The Association of Solar Flares with Coronal Mass Ejections During the Extended Solar Minimum

Cited by in corpus (13)

• A quasi-periodic fast-propagating magnetosonic wave associated with the eruption of a magnetic flux rope
• On a small-scale EUV wave: the driving mechanism and the associated oscillating filament
• Quasi-Periodic Radio Bursts Associated with Fast-mode Waves near a Magnetic Null Point
• Coronal Quasi-periodic Fast-mode Propagating Wave Trains
• First Unambiguous Imaging of Large-Scale Quasi-Periodic Extreme-Ultraviolet Wave or Shock
• Quasi-periodic Counter-propagating Fast Magnetosonic Wave Trains from Neighboring Flares: SDO/AIA Observations and 3D MHD Modeling
• Flare Generated Shock Wave Propagation Through Solar Coronal Arcade Loops and Associated Type II Radio Burst
• CME-Driven and Flare-Ignited Fast Magnetosonic Waves Successively Detected in a Solar Eruption
• Total reflection of a flare-driven quasi-periodic EUV wave train at a coronal hole boundary
• Dispersively Formed Quasi-Periodic Fast Magnetosonic Wavefronts Due to the Eruption of a Nearby Mini-filament
• Cross-loop propagation of a quasi-periodic extreme-ultraviolet wave train triggered by successive stretching of magnetic field structures during a solar eruption
• Quantifying the Magnetic Structure of a Coronal Shock Producing a Type II Radio Burst
• An extreme ultraviolet wave generating upward secondary waves in a streamer-like solar structure