The eruption of a small-scale emerging flux rope as the driver of an M-class flare and a coronal mass ejection

Abstract

Solar flares and coronal mass ejections (CMEs) are the most powerful explosions in the Sun. They are major sources of potentially destructive space weather conditions. However, the possible causes of their initiation remain controversial. By using high resolution data observed by NST of BBSO, supplemented by Solar Dynamics Observatory (SDO) observations, we present unusual observations of a small-scale emerging flux rope near a large sunspot, whose eruption produced an M-class flare and a coronal mass ejection. The presence of the small-scale flux rope was indicated by static nonlinear force free field (NLFFF) extrapolation as well as data-driven MHD modeling of the dynamic evolution of the coronal 3D magnetic field. During the emergence of the flux rope, rotation of satellite sunspots at the footpoints of the flux rope was observed. Meanwhile, the Lorentz force, magnetic energy, vertical current, and transverse fields were increasing during this phase. The free energy from the magnetic flux emergence and twisting magnetic fields is sufficient to power the M-class flare. These observations for the first time present the complete process from the emergence of the small-scale flux rope to the production of solar eruptions.

arXiv comment26 pages,7 figures, accepted for publication in ApJ

References in corpus (57)

• A Model for Solar Coronal Mass Ejections
• Torus instability
• The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: SHARPs -- Space-weather HMI Active Region Patches
• 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
• VFISV: Very Fast Inversion of the Stokes Vector for the Helioseismic and Magnetic Imager
• Observation of An Evolving Magnetic Flux Rope Prior To and During A Solar Eruption
• The Emergence of a Twisted Flux Tube into the Solar Atmosphere: Sunspot Rotations and the Formation of a Coronal Flux Rope
• Sympathetic Partial and Full Filament Eruptions Observed in One Solar Breakout Event
• Plasma Jets and Eruptions in Solar Coronal Holes: a 3D flux emergence experiment
• Global Forces in Eruptive Solar Flares: The Lorentz force Acting on the Solar Atmosphere and the Solar Interior
• Observations and modeling of the early acceleration phase of erupting filaments involved in coronal mass ejections
• Interaction between a fast rotating sunspot and ephemeral regions as the origin of the major solar event on 2006 December 13
• Observation of kink instability during small B5.0 solar flare on 04 June, 2007
• The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: Optimization of the Spectral Line Inversion Code
• Catastrophe versus instability for the eruption of a toroidal solar magnetic flux rope
• Multiwavelength Observations of Small-Scale Reconnection Events triggered by Magnetic Flux Emergence in the Solar Atmosphere
• Formation of Magnetic Flux Ropes during Confined Flaring Well Before the Onset of a Pair of Major Coronal Mass Ejections
• Prominence Formation Associated with an Emerging Helical Flux Rope
• A three-dimensional study of reconnection, current sheets and jets resulting from magnetic flux emergence in the Sun
• Magnetic Structure and Dynamics of the Erupting Solar Polar Crown Prominence on 2012 March 12
• Initiation of CME and Associated Flare Caused by Helical Kink Instability Observed by SDO/AIA
• Multiwavelength observations of a partially eruptive filament on 2011 September 8
• Nonlinear Force-Free Field Extrapolation of a Coronal Magnetic Flux Rope Supporting a Large-Scale Filament from Photospheric Vector Magnetogram
• Simulations of Emerging Magnetic Flux. II: The formation of Unstable Coronal Flux Ropes and the Initiation of CMEs
• Direct Observations of Tether-cutting Reconnection During a Major Solar Event From 2014 February 24 to 25
• The cool surge following flux emergence in a radiation-MHD experiment
• On-disc Observations of Flux Rope Formation Prior to its Eruption
• Flux-Rope Twist in Eruptive Flares and CMEs: due to Zipper and Main-Phase Reconnection
• New Vacuum Solar Telescope observations of a flux rope tracked by a filament activation
• Direct observations of magnetic flux rope formation during a solar coronal mass ejection
• Sunspot rotation, filament, and flare: The event on 2000 February 10
• 3D MHD Flux Emergence Experiments: Idealized models and coronal interactions
• Signatures of magnetic reconnection at boundaries of interplanetary small-scale magnetic flux ropes
• Solar Magnetic Flux Ropes
• Unwinding motion of a twisted active-region filament
• The formation of an inverse S-shaped active-region filament driven by sunspot motion and magnetic reconnection
• On the Characteristics of Footpoints of Solar Magnetic Flux Ropes during the Eruption
• The causality between the rapid rotation of a sunspot and an X3.4 flare
• Formation of Compound Flux Rope by The Merging of Two Filament Channels, Associated Dynamics and its Stability
• Sunspot Rotation as a Driver of Major Solar Eruptions in NOAA Active Region 12158
• Kink instability evidenced by analyzing the leg rotation of a filament
• Slipping Magnetic Reconnection of Flux Rope Structures as a Precursor to an Eruptive X-class Solar Flare
• Flux rope proxies and fan-spine structures in active region NOAA 11897
• Sunspot rotation. I. A consequence of flux emergence
• Recurrent explosive eruptions and the sigmoid-to-arcade transformation in the sun driven by dynamical magnetic flux emergence
• Multiple eruptions from magnetic flux emergence
• Re-flaring of a Post-Flare Loop System Driven by Flux Rope Emergence and Twisting
• The magnetic structure of surges in small-scale emerging flux regions
• On magnetic reconnection and flux rope topology in solar flux emergence
• On Signatures of Twisted Magnetic Flux Tube Emergence
• Observations of a Series of Flares and Associated Jet-like Eruptions Driven by the Emergence of Twisted Magnetic Fields
• Multiwavelength Observations of a Flux Rope Formation by Series of Magnetic Reconnection in the Chromosphere
• Sunspot rotation. II. Effects of varying the field strength and twist of an emerging flux tube
• A Comparison Study of a Solar Active-Region Eruptive Filament and a Neighboring Non-Eruptive Filament
• On the Rotation of Sunspots and Their Magnetic Polarity

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• The Ellerman bomb and Ultraviolet burst triggered successively by an emerging magnetic flux rope
• Naked emergence of an anti-Hale active region I. Overall evolution and magnetic properties
• The dynamics of AR 12700 in its early emerging phase I: interchange reconnection
• Self-consistent Nonlinear Force-free Field Reconstruction from Weighted Boundary Conditions
• The Role of a Tiny Brightening in a Huge Geo-effective Solar Eruption Leading to the St Patrick's Day Storm
• The dynamics of AR 12700 in its early emerging phase II: fan-shaped activities relevant to arch filament systems
• The Observations of Magnetic Reconnection During the Interaction Process of Two Active Region Filaments
• Signatures of Untwisting Magnetic Field in a Small Emerging Bipole in the Solar Photosphere
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