Eruptive-Impulsive Homologous M-class Flares Associated with Double-Decker Flux Rope Configuration in Mini-Sigmoid of NOAA 12673

Abstract

We present a multiwavelength analysis of two homologous, short lived, impulsive flares of GOES class M1.4 and M7.3, that occurred from a very localized mini-sigmoid region within the active region NOAA 12673 on 2017 September 7. Both flares were associated with initial jet-like plasma ejection which for a brief amount of time moved toward east in a collimated manner before drastically changing direction toward southwest. Non-linear force-free field extrapolation reveals the presence of a compact double-decker flux rope configuration in the mini-sigmoid region prior to the flares. A set of open field lines originating near the active region which were most likely responsible for the anomalous dynamics of the erupted plasma, gave the earliest indication of an emerging coronal hole near the active region. The horizontal field distribution suggests a rapid decay of the field above the active region, implying high proneness of the flux rope system toward eruption. In view of the low coronal double-decker flux ropes and compact extreme ultra-violet (EUV) brightening beneath the filament along with associated photospheric magnetic field changes, our analysis supports the combination of initial tether-cutting reconnection and subsequent torus instability for driving the eruption.

arXiv comment25 pages, 11 figures, 2 tables; accepted for publication in the Astrophysical Journal

References in corpus (68)

• A Model for Solar Coronal Mass Ejections
• Torus instability
• An Observational Overview of Solar Flares
• Ideal kink instability of a magnetic loop equilibrium
• Optimization code with weighting function for the reconstruction of coronal magnetic fields
• Preprocessing of vector magnetograph data for a non-linear force-free magnetic field reconstruction
• Coronal Holes
• Solar Coronal Jets: Observations, Theory, and Modeling
• Criteria for Flux Rope Eruption: Non Equilibrium versus Torus Instability
• The origin, early evolution and predictability of solar eruptions
• The standard flare model in three dimensions III. Slip-running reconnection properties
• The standard flare model in three dimensions. II. Upper limit on solar flare energy
• Microwave and Hard X-Ray Observations of the 2017 September 10 Solar Limb Flare
• Electric current in flares ribbons: observations and 3D standard model
• Slow Rise and Partial Eruption of a Double-Decker Filament. I Observations and Interpretation
• The Confined X-class Flares of Solar Active Region 2192
• Double Coronal Hard and Soft X-ray Source Observed by RHESSI: Evidence for Magnetic Reconnection and Particle Acceleration in Solar Flares
• How to optimize nonlinear force-free coronal magnetic field extrapolations from SDO/HMI vector magnetograms?
• Formation of a Double-decker Magnetic Flux Rope in the Sigmoidal Solar Active Region 11520
• Genesis and impulsive evolution of the 2017 September 10 coronal mass ejection
• Deflected propagation of a coronal mass ejection from the corona to interplanetary space
• Block-induced complex structures building the flare-productive solar active region 12673
• Observations of an Eruptive Solar Flare in the Extended EUV Solar Corona
• Magnetic Flux Cancelation as the Trigger of Solar Coronal-Hole Coronal Jets
• The Influence of Spatial Resolution on Nonlinear Force-Free Modeling
• Modeling the evolution and propagation of the 2017 September 9th and 10th CMEs and SEPs arriving at Mars constrained by remote-sensing and in-situ measurement
• Eruption of a multi-flux-rope system in solar active region 12673 leading to the two largest flares in Solar Cycle 24
• Coronal mass ejection initiation: On the nature of the Flux Cancellation Model
• A Study of Pre-Flare Solar Coronal Magnetic Fields: Magnetic Flux Ropes
• Direct Observations of Tether-cutting Reconnection During a Major Solar Event From 2014 February 24 to 25
• Magnetic Reconnection During the Two-Phase Evolution of a Solar Eruptive Flare
• Microwave Spectral Imaging of an Erupting Magnetic Flux Rope: Implications for the Standard Solar Flare Model in Three Dimensions
• CME -- HSS interaction and characteristics tracked from Sun to Earth
• Successive flux rope eruptions from $\delta$-Sunspots region of NOAA 12673 and associated X-class eruptive flares on 2017 September 6
• A Circular-ribbon Solar Flare Following an Asymmetric Filament Eruption
• Evidence for Solar Tether-cutting Magnetic Reconnection from Coronal Field Extrapolations
• A Coronal Hole's Effects on CME Shock Morphology in the Inner Heliosphere
• On the origin of two X-class flares in active region NOAA 12673 - Shear flows and head-on collision of new and pre-existing flux
• Critical Height of the Torus Instability in Two-Ribbon Solar Flares
• A Truly Global Extreme Ultraviolet Wave from the SOL2017-09-10 X8.2+ Solar Flare-Coronal Mass Ejection
• On the factors determining the eruptive character of solar flares
• Witnessing tether-cutting reconnection at the onset of a partial eruption
• Rapid buildup of a magnetic flux rope during a confined X2.2 class flare in NOAA AR 12673
• Temperature Tomography of a Coronal Sigmoid Supporting the Gradual Formation of a Flux Rope
• Velocity and Magnetic Transients Driven by the X2.2 White-Light Flare of 2011 February 15 in NOAA 11158
• Relative timing of solar flares observed at different wavelengths
• Formation and eruption of a flux rope from the sigmoid active region NOAA 11719 and associated M6.5 flare: A multi-wavelength study
• Tether-cutting Reconnection between Two Solar Filaments Triggering Outflows and a Coronal Mass Ejection
• Magnetic helicity and eruptivity in active region 12673
• Can we explain non-typical solar flares?
• 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
• RHESSI and TRACE observations of multiple flare activity in AR 10656 and associated filament eruption
• A Comparative Study of the Eruptive and Non-Eruptive Flares Produced by the Largest Active Region of Solar Cycle 24
• Homologous white light solar flares driven by photosperic shear motions
• Two strong white-light solar flares in AR NOAA 12673 as potential clues for stellar superflares
• Pre-flare coronal jet and evolutionary phases of a solar eruptive prominence associated with M1.8 flare: SDO and RHESSI observations
• Pre-flare processes, flux rope activation, large-scale eruption and associated X-class flare from the active region NOAA 11875
• A comparative study between a failed and a successful eruption initiated from the same polarity inversion line in AR 11387
• HXR emission from an activated flux rope and subsequent evolution of an eruptive long duration solar flare
• Formation of a Magnetic Flux Rope in the Early Emergence Phase of NOAA Active Region 12673
• Transient Magnetic and Doppler Features Related to the White-light Flares in NOAA 10486
• 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
• Direct Observation of Two-Step Magnetic Reconnection in a Solar Flare
• Impulsive energy release and non-thermal emission in a confined M4.0 flare triggered by rapidly evolving magnetic structures
• Observational and model analysis of a two-ribbon flare possibly induced by a neighbouring blowout jet
• Signatures of magnetic reconnection in solar eruptive flares: A multi-wavelength perspective

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