Microwave Spectral Imaging of an Erupting Magnetic Flux Rope: Implications for the Standard Solar Flare Model in Three Dimensions
arXiv:2005.01900 · doi:10.3847/2041-8213/ab901a
Abstract
We report microwave spectral imaging observations of an erupting magnetic flux rope during the early impulsive phase of the X8.2-class limb flare on 2017 September 10, obtained by the Expanded Owens Valley Solar Array. A few days prior to the eruption, when viewed against the disk, the flux rope appeared as a reverse S-shaped dark filament along the magnetic polarity inversion line. During the eruption, the rope exhibited a "hot channel" structure in extreme ultraviolet and soft X-ray passbands sensitive to ~10 MK plasma. The central portion of the flux rope was nearly aligned with the line of sight, which quickly developed into a teardrop-shaped dark cavity during the early phase of the eruption. A long and thin plasma sheet formed below the cavity, interpreted as the reconnection current sheet viewed edge-on. A nonthermal microwave source was present at the location of the central current sheet, which extended upward encompassing the dark cavity. A pair of nonthermal microwave sources were observed for several minutes on both sides of the main flaring region. They shared a similar temporal behavior and spectral property to the central microwave source below the cavity, interpreted as the conjugate footpoints of the erupting flux rope. These observations are broadly consistent with the magnetic topology and the associated energy release scenario suggested in the three-dimensional standard model for eruptive solar flares. In particular, our detection of nonthermal emission at conjugate flux rope footpoints provides solid evidence of particle transport along an erupting magnetic flux rope.
arXiv comment14 pages, 5 figures, accepted by The Astrophysical Journal Letters. Associated animation is available at https://web.njit.edu/~binchen/download/publications/Chen+2020_MFR/Figure1_video.mp4
References in corpus (52)
- Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
- The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: Overview and Performance
- A multi-scale multi-frequency deconvolution algorithm for synthesis imaging in radio interferometry
- Global Energetics of Thirty-Eight Large Solar Eruptive Events
- Differential Emission Measures from the Regularized Inversion of Hinode and SDO data
- Observation of An Evolving Magnetic Flux Rope Prior To and During A Solar Eruption
- Differential Emission Measure Analysis of Multiple Structural Components of Coronal Mass Ejections in the Inner Corona
- Observing Flux Rope Formation During the Impulsive Phase of a Solar Eruption
- 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
- From coronal observations to MHD simulations, the building blocks for 3D models of solar flares
- Spectroscopic Observations of Current Sheet Formation and Evolution
- Observations of Turbulent Magnetic Reconnection Within a Solar Current Sheet
- The Driver of Coronal Mass Ejections in the Low Corona: A Flux Rope
- Origin and Structures of Solar Eruptions I: Magnetic Flux Rope (Invited Review)
- RHESSI Line and Continuum Observations of Super-hot Flare Plasma
- Simultaneous observation of a flux rope eruption and magnetic reconnection during an X-class solar flare
- Genesis and impulsive evolution of the 2017 September 10 coronal mass ejection
- Hinode X-Ray Telescope Detection of Hot Emission from Quiescent Active Regions: A Nanoflare Signature?
- Observations of an Eruptive Solar Flare in the Extended EUV Solar Corona
- Multiple Regions of Shock-accelerated Particles during a Solar Coronal Mass Ejection
- Mapping the magnetic field of flare coronal loops
- 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
- How Common are Hot Magnetic Flux Ropes in the Low Solar Corona? A Statistical Study of EUV Observations
- Persistent Quasi-Periodic Pulsations During a Large X-Class Solar Flare
- Extreme Kinematics of the 2017 September 10 Solar Eruption and the Spectral Characteristics of the Associated Energetic Particles
- Global Energetics of Solar Flares: III. Non thermal Energies
- Planets In Young Massive Clusters: On the survivability of planets in young massive clusters and its implication of planet orbital architectures in globular clusters
- First analysis of GLE 72 event on 10 September 2017: Spectral and anisotropy characteristics
- Fermi-LAT observations of the 2017 September 10 solar flare
- Broad Non-Gaussian Fe XXIV Line Profiles in the Impulsive Phase of the 2017 September 10 X8.3 class Flare Observed by Hinode/EIS
- Estimation of a Coronal Mass Ejection Magnetic Field Strength using Radio Observations of Gyrosynchrotron Radiation
- Direct observations of magnetic flux rope formation during a solar coronal mass ejection
- A computational model for exploring particle acceleration during reconnection in macro-scale systems
- Spectral Analysis of the September 2017 Solar Energetic Particle Events
- Magnetic Reconnection Null Points as the Origin of Semi-relativistic Electron Beams in a Solar Jet
- A Truly Global Extreme Ultraviolet Wave from the SOL2017-09-10 X8.2+ Solar Flare-Coronal Mass Ejection
- Large-scale Compression Acceleration during Magnetic Reconnection in a Low- Plasma
- An exploration of heating mechanisms in a supra-arcade plasma sheet formed after a coronal mass ejection
- Evolution of A Magnetic Flux Rope toward Eruption
- Direct Evidence of an Eruptive, Filament-Hosting Magnetic Flux Rope Leading to a Fast Solar Coronal Mass Ejection
- Geometry, Kinematics and Heliospheric Impact of a Large CME-driven Shock in 2017 September
- Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare
- Exploring Plasma Heating in the Current Sheet Region in a Three-Dimensional Coronal Mass Ejection Simulation
- Microwave imaging of a hot flux rope structure during the pre-impulsive stage of an eruptive M7.7 solar flare
- Large-Scale Parallel Electric Fields and Return Currents in a Global Simulation Model
- Energy Partitions and Evolution in a Purely Thermal Solar Flare
- Effects of Coronal Density and Magnetic Field Distributions on a Global Solar EUV Wave
- Evidence of Electron Acceleration around the Reconnection X-point in a Solar Flare
- Drifting Pulsation Structure at the Very Beginning of the 2017 September 10 Limb Flare
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- Magnetic Flux Ropes in the Solar Corona: Structure and Evolution toward Eruption
- Magnetic Reconnection During the Post-Impulsive Phase of a Long-Duration Solar Flare: Bi-Directional Outflows as a Cause of Microwave and X-ray Bursts
- Hot Plasma Flows and Oscillations in the Loop-top Region During the September 10 2017 X8.2 Solar Flare
- From Pseudostreamer Jets to CMEs: Observations of the Breakout Continuum
- Energetic Electron Distribution of the Coronal Acceleration Region: First results from Joint Microwave and Hard X-ray Imaging Spectroscopy
- Modeling Electron Acceleration and Transport in the Early Impulsive Phase of the 2017 September 10 Solar Flare
- When do solar erupting hot magnetic flux ropes form?
- Eruptive-Impulsive Homologous M-class Flares Associated with Double-Decker Flux Rope Configuration in Mini-Sigmoid of NOAA 12673
- Solar flare hard X-rays from the anchor points of an eruptive filament
- Direct Observation of A Large-scale CME Flux Rope Event Arising from an Unwinding Coronal Jet
- Radio Spectral Imaging of an M8.4 Eruptive Solar Flare: Possible Evidence of a Termination Shock
- Eruption of a Magnetic Flux Rope in a Comprehensive Radiative Magnetohydrodynamic Simulation of flare-productive active regions
- Multi-point study of the energy release and transport in the 28 March 2022, M4-flare using STIX, EUI, and AIA during the first Solar Orbiter nominal mission perihelion
- Coronal Magnetic Field Measurements along a Partially Erupting Filament in a Solar Flare
- Multiple Regions of Nonthermal Quasi-Periodic Pulsations during the Impulsive Phase of a Solar Flare
- Solar flares in the Solar Orbiter era: Short-exposure EUI/FSI observations of STIX flares
- Saddle-shaped solar flare arcades
- High-Energy Insights from an Escaping Coronal Mass Ejection with Solar Orbiter/STIX Observations
- Observations of Thomson scattering from a loop-prominence system
- Observations of the Current Sheet Heating in X-ray during a Solar Flare
- Implications for additional plasma heating driving the extreme-ultraviolet late phase of a solar flare with microwave imaging spectroscopy
- Twin Null-Point-Associated Major Eruptive Three-Ribbon Flares with Unusual Microwave Spectra
- The early evolution of solar flaring plasma loops
- Energetic Nonthermal Electrons within the Above-the-looptop Regions in Solar Flares: Acceleration, Feedback, and Quasi-Periodic Pulsations
- Stereoscopic Observations of Solar X-ray Sources Explained by a Data-Constrained Magnetohydrodynamic Simulation
- Noise in Maps of the Sun at Radio Wavelengths II: Solar Use Cases
- Spectral component imaging of solar X-ray flares
- Radio, X-ray, and EUV signatures of internal and external reconnection of an erupting flux rope
- Non-thermal Sources from Stereoscopic Hard X-ray and Earth-based Microwave Observations in a Data-Constrained Magnetohydrodynamic Simulation
- Microwave Imaging Spectroscopy Diagnosis of the Slow-rise Precursor of a Major Solar Eruption