Flare Generated Shock Wave Propagation Through Solar Coronal Arcade Loops and Associated Type II Radio Burst

Abstract

This paper presents multiwavelength observations of a flare-generated type II radio burst. The kinematics of the shock derived from the type II closely match a fast EUV wave seen propagating through coronal arcade loops. The EUV wave was closely associated with an impulsive M1.0 flare without a related coronal mass ejection, and was triggered at one of the footpoints of the arcade loops in active region NOAA 12035. It was initially observed in the AIA 335 Å images with a speed of ~800 km/s and accelerated to ~1490 km/s after passing through the arcade loops. A fan-spine magnetic topology was revealed at the flare site. A small, confined filament eruption (~340 km/s) was also observed moving in the opposite direction to the EUV wave. We suggest that breakout reconnection in the fan-spine topology triggered the flare and associated EUV wave that propagated as a fast shock through the arcade loops.

arXiv commentApJ, 12 Pages, 8 Figures

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Cited by in corpus (15)

• Evidence For The Magnetic Breakout Model in an Equatorial Coronal-Hole Jet
• First Detection of Plasmoids from Breakout Reconnection on the Sun
• From Pseudostreamer Jets to CMEs: Observations of the Breakout Continuum
• Solar Physics with the Square Kilometre Array
• A secondary fan-spine magnetic structure in active region 11897
• Type II radio bursts and their association with coronal mass ejections in solar cycles 23 and 24
• CME-Driven and Flare-Ignited Fast Magnetosonic Waves Successively Detected in a Solar Eruption
• Using radio triangulation to understand the origin of two subsequent type II radio bursts
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• Multi-wavelength Observations of a Metric Type-II Event
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