Development of a Confined Circular-cum-parallel Ribbon Flare and Associated Pre-flare Activity
arXiv:2005.09586 · doi:10.1007/s11207-020-01642-y
Abstract
We study a complex GOES M1.1 circular ribbon flare and related pre-flare activity on 26 January 2015 [SOL26-01-2015] in solar active region NOAA 12268. This flare activity was observed by the AIA on board SDO and the RHESSI. The examination of photospheric magnetograms during the extended period, prior to the event, suggests the successive development of a so-called 'anemone' type magnetic configuration. NLFFF extrapolation reveals a fan-spine magnetic configuration with the presence of a coronal null-point. We found that the pre-flare activity in the active region starts ~15 min prior to the main flare in the form of localized bright patches at two locations. A comparison of locations and spatial structures of the pre-flare activity with magnetic configuration of the corresponding region suggests onset of magnetic reconnection at the null-point along with the low-atmosphere magnetic reconnection caused by the emergence and the cancellation of the magnetic flux. The main flare of M1.1 class is characterized by the formation of a well-developed circular ribbon along with a region of remote brightening. Remarkably, a set of relatively compact parallel ribbons formed inside the periphery of the circular ribbon which developed lateral to the brightest part of the circular ribbon. During the peak phase of the flare, a coronal jet is observed at the north-east edge of the circular ribbon which suggests interchange reconnection between large-scale field lines and low-lying closed field lines. Our investigation suggests a combination of two distinct processes in which ongoing pre-flare null-point reconnection gets further intensified as the confined eruption along with jet activity proceeded from within the circular ribbon region which results to the formation of inner parallel ribbons and corresponding post-reconnection arcade.
arXiv comment24 pages, 11 figures, Accepted for publication in Solar Physics
References in corpus (36)
- An Observational Overview of Solar Flares
- Structure, Stability, and Evolution of Magnetic Flux Ropes from the Perspective of Magnetic Twist
- The origin, early evolution and predictability of solar eruptions
- Hot Spine Loops and the Nature of a Late-Phase Solar Flare
- Circular Ribbon Flares and Homologous Jets
- From coronal observations to MHD simulations, the building blocks for 3D models of solar flares
- Slipping magnetic reconnection during an X-class solar flare observed by SDO/AIA
- Slipping Magnetic Reconnection, Chromospheric Evaporation, Implosion, and Precursors in the 2014 September 10 X1.6-Class Solar Flare
- High-resolution observations of flare precursors in the low solar atmosphere
- Quasi-periodic Slipping Magnetic Reconnection During an X-class Solar Flare Observed by the Solar Dynamics Observatory and Interface Region Imaging Spectrograph
- Chromospheric Jet and Growing "Loop" Observed by Hinode: New Evidence of Fan-Spine Magnetic Topology Resulting From Flux Emergence
- Extrapolation of the Solar Coronal Magnetic Field from SDO/HMI Magnetogram by a CESE--MHD--NLFFF Code
- Homologous Flares and Magnetic Field Topology in Active Region NOAA 10501 on 20 November 2003
- X-ray and UV investigation into the magnetic connectivity of a solar flare
- Evidence of Magnetic Helicity in Emerging Flux and Associated Flare
- Two Episodes of Magnetic Reconnections During a Confined Circular-ribbon Flare
- Pre-flare activity and magnetic reconnection during the evolutionary stages of energy release in a solar eruptive flare
- Observations of Multiple Surges Associated with Magnetic Activities in AR10484 on 25 October 2003
- Slipping Magnetic Reconnection Triggering a Solar Eruption of a Triangle-flag Flux Rope
- Relative timing of solar flares observed at different wavelengths
- A Circular White-Light Flare with Impulsive and Gradual White-Light Kernels
- Why are flare ribbons associated with the spines of magnetic null points generically elongated?
- The transition from eruptive to confined flares in the same active region
- Two Step Filament Eruption During 14-15 March 2015
- Characteristics of Anemone Active Regions Appearing in Coronal Holes Observed with {\it Yohkoh} Soft X-ray Telescope
- Generation mechanisms of quasi-parallel and quasi-circular flare ribbons in a confined flare
- Transition from circular-ribbon to parallel-ribbon flares associated with a bifurcated magnetic flux rope
- Pre-flare processes, flux rope activation, large-scale eruption and associated X-class flare from the active region NOAA 11875
- Slippage of Jets Explained by the Magnetic Topology of NOAA Active Region 12035
- Slipping magnetic reconnections with multiple flare ribbons during an X-class solar flare
- Identification of Pre-flare Processes and Their Possible Role in Driving a Large-scale Flux Rope Eruption with Complex M-class Flare in the Active Region NOAA 12371
- Resolving the Fan-Spine Reconnection Geometry of a Small-Scale Chromospheric Jet Event with the New Solar Telescope
- Pre-eruption processes: heating, particle acceleration and the formation of a hot channel before the 2012 October 20 M9.0 limb flare
- Impulsive energy release and non-thermal emission in a confined M4.0 flare triggered by rapidly evolving magnetic structures
- Multi-wavelength Diagnostics of the Precursor and Main phases of an M1.8 Flare on 2011 April 22
- Imaging observations of chromospheric evaporation in a circular-ribbon flare
Cited by in corpus (11)
- Magnetohydrodynamic Simulation of Magnetic Null-point Reconnections and Coronal dimmings during the X2.1 flare in NOAA AR 11283
- Evolutionary stages and triggering process of a complex eruptive flare with circular and parallel ribbons
- A partial filament eruption in three steps induced by external magnetic reconnection
- Statistical analysis of circular-ribbon flares
- Successive occurrences of quasi-circular ribbon flares in a fan-spine-like configuration involving hyperbolic flux tube
- Generic low-atmosphere signatures of swirled-anemone jets
- Energy Partition in Four Confined Circular-Ribbon Flares
- Fine details in solar flare ribbons: Statistical insights from observations with the Swedish 1-m Solar Telescope
- Investigation of two coronal mass ejections from circular ribbon source region: Origin, Sun-Earth propagation and Geo-effectiveness
- Flare Expansion to a Magnetic Rope Accompanied by Rare Radio Bursts
- Homologous compact major blowout-eruption solar flares and their production of broad CMEs