Interaction of Two Active Region Filaments Observed by NVST and SDO

Abstract

Using high spatial and temporal resolution H$\alpha$ data from the New Vacuum Solar Telescope (NVST) and simultaneous observations from the Solar Dynamics Observatory (SDO), we present a rare event on the interaction between two filaments (F1 and F2) in AR 11967 on 2014 January 31. The adjacent two filaments were almost perpendicular to each other. Their interaction was driven by the movement of F1 and started when the two filaments collided with each other. During the interaction, the threads of F1 continuously slipped from the northeast to the southwest, accompanied by the brightenings at the junction of two filaments and the northeast footpoint of F2. Part of F1 and the main body of F2 became invisible in H$\alpha$ wavelength due to the heating and the motion of F2. At the same time, bright material initiated from the junction of two filaments were observed to move along F1. The magnetic connectivities of F1 were found to be changed after their interaction. These observations suggest that magnetic reconnection was involved in the interaction of two filaments and resulted in the eruption of one filament.

18 pages, 6 figures, accepted by ApJ

References in corpus (8)

• Torus instability
• Magnetic reconnection between a solar filament and nearby coronal loops
• New Vacuum Solar Telescope observations of a flux rope tracked by a filament activation
• Tether-cutting Reconnection between Two Solar Filaments Triggering Outflows and a Coronal Mass Ejection
• Partial eruption of a filament with twisting nonuniform fields
• Formation of Compound Flux Rope by The Merging of Two Filament Channels, Associated Dynamics and its Stability
• Kink instability evidenced by analyzing the leg rotation of a filament
• Complex Flare Dynamics Initiated by a Filament-Filament Interaction

Cited by in corpus (15)

• The Chinese Hα Solar Explorer (CHASE) mission: An overview
• Coronal condensations caused by magnetic reconnection between solar coronal loops
• Formation of an active region filament driven by a series of jets
• Longitudinal filament oscillations enhanced by two C-class flares
• The Evolution of Plasma Composition During a Solar Flare
• Formation and Eruption of a Double-decker Filament Triggered by Micro-bursts and Recurrent Jets in the Filament Channel
• Decayless longitudinal oscillations of a solar filament maintained by quasi-periodic jets
• A new small satellite sunspot triggering recurrent standard- and blowout-coronal jets
• Sympathetic eruptions of two filaments with an identifiable causal link observed by the Solar Dynamics Observatory
• Magnetic reconnection between loops accelerated by a nearby filament eruption
• Current sheets in the wake of an eruption of two crossing filaments
• Formation of a solar filament by magnetic reconnection and coronal condensation
• A giant dark channel across the solar equator consisting of two filament channels with different chiralities
• The Observations of Magnetic Reconnection During the Interaction Process of Two Active Region Filaments
• Research progress based on observations of the New Vacuum Solar Telescope