First detection of transverse vertical oscillation during the expansion of coronal loops

Abstract

In this Letter, we perform a detailed analysis of the M5.5-class eruptive flare occurring in active region 12929 on 2022 January 20. The eruption of a hot channel generates a fast coronal mass ejection (CME) and a dome-shaped extreme-ultraviolet (EUV) wave at speeds of 740$-$860 km s${}^{-1}$. The CME is associated with a type II radio burst, implying that the EUV wave is a fast-mode shock wave. During the impulsive phase, the flare shows quasi-periodic pulsations (QPPs) in EUV, hard X-ray, and radio wavelengths. The periods of QPPs range from 18 s to 113 s, indicating that flare energy is released and nonthermal electrons are accelerated intermittently with multiple time scales. The interaction between the EUV wave and low-lying adjacent coronal loops (ACLs) results in contraction, expansion, and transverse vertical oscillation of ACLs. The speed of contraction in 171, 193, and 211 Å is higher than that in 304 Å. The periods of oscillation are 253 s and 275 s in 304 Å and 171 Å, respectively. A new scenario is proposed to explain the interaction. The equation that interprets the contraction and oscillation of the overlying coronal loops above a flare core can also interpret the expansion and oscillation of ACLs, suggesting that the two phenomena are the same in essence.

11 pages, 12 figures, accepted for publication in ApJL

References in corpus (21)

• The Chinese Hα Solar Explorer (CHASE) mission: An overview
• Quasi-periodic pulsations in solar and stellar flares: an overview of recent results
• Kink oscillations of coronal loops
• Calibration procedures for the CHASE/HIS science data
• Chromospheric Condensation and Quasi-periodic Pulsations in a Circular-ribbon Flare
• Microwave Quasi-periodic Pulsations in Multi-timescales Associated with a Solar Flare/CME Event
• Quasi-Periodic Pulsations during the Impulsive and Decay phases of an X-class Flare
• Quasi-Periodic Particle Acceleration in a Solar Flare
• Fundamental-Mode Oscillations of Two Coronal Loops within a Solar Magnetic Arcade
• Coronal Implosion and Particle Acceleration in the Wake of a Filament Eruption
• Transverse coronal loop oscillations excited by homologous circular-ribbon flares
• Transverse Coronal-Loop Oscillations Induced by the Non-radial Eruption of a Magnetic Flux Rope
• Detections of Multi-Periodic Oscillations during a Circular Ribbon Flare
• Persistent fast kink magnetohydrodynamic waves detected in a quiescent prominence
• Transverse oscillation of a coronal loop induced by a flare-related jet
• Observations of a prominence eruption and loop contraction
• Filament Eruption Driving EUV Loop Contraction then Expansion above a Stable Filament
• Three-dimensional analyses of an aspherical coronal mass ejection and its driven shock
• Do Coronal Loops Oscillate in Isolation?
• Spatially Resolved Moving Radio Burst in Association with an EUV Wave
• Study of transverse oscillations in coronal loops excited by flares and eruptions

Cited by in corpus (5)

• Traveling kink oscillations of coronal loops launched by a solar flare
• Solar energetic particles injected inside and outside a magnetic cloud: The widespread solar energetic particle event on 2022 January 20
• Rapid Rotation of an Erupting Prominence and the Associated Coronal Mass Ejection on 13 May 2013
• Heating of quiescent coronal loops caused by nearby eruptions observed with the Solar Dynamics Observatory and the Solar Upper Transition Region Imager
• Transverse vertical oscillations during the contraction and expansion of coronal loops