Quantitative Characterization of Magnetic Flux Rope Properties for Two Solar Eruption Events
arXiv:2201.03149 · doi:10.3847/1538-4357/ac78df
Abstract
In order to bridge the gap between heliospheric and solar observations of coronal mass ejections (CMEs), one of the key steps is to improve the understanding of their corresponding magnetic structures like the magnetic flux ropes (MFRs). But it remains a challenge to confirm the existence of a coherent MFR before or upon the CME eruption on the Sun and to quantitatively characterize the CME-MFR due to the lack of direct magnetic field measurement in the corona. In this study, we investigate the MFR structures, originating from two active regions (ARs), AR 11719 and AR 12158, and estimate their magnetic properties quantitatively. We perform the nonlinear force-free field extrapolations with preprocessed photospheric vector magnetograms. In addition, remote-sensing observations are employed to find indirect evidence of MFRs on the Sun and to analyze the time evolution of magnetic reconnection flux associated with the flare ribbons during the eruption. A coherent "pre-existing" MFR structure prior to the flare eruption is identified quantitatively for one event from the combined analysis of the extrapolation and observation. Then the characteristics of MFRs for two events on the Sun before and during the eruption, forming the CME-MFR, including the axial magnetic flux, field-line twist, and reconnection flux, are estimated and compared with the corresponding in situ modeling results. We find that the magnetic reconnection associated with the accompanying flares for both events injects significant amount of flux into the erupted CME-MFRs.
arXiv comment28 pages, 10 figures, 3 tables, submitted to ApJ
References in corpus (39)
- A Model for Solar Coronal Mass Ejections
- The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: SHARPs -- Space-weather HMI Active Region Patches
- Preprocessing of vector magnetograph data for a non-linear force-free magnetic field reconstruction
- Evolution of Magnetic Field and Energy in A Major Eruptive Active Region Based on SDO/HMI Observation
- A Critical Assessment of Nonlinear Force-Free Field Modeling of the Solar Corona for Active Region 10953
- Structure, Stability, and Evolution of Magnetic Flux Ropes from the Perspective of Magnetic Twist
- Non-linear force-free field modeling of a solar active region around the time of a major flare and coronal mass ejection
- A fundamental mechanism of solar eruption initiation
- How to optimize nonlinear force-free coronal magnetic field extrapolations from SDO/HMI vector magnetograms?
- A Database of Flare Ribbon Properties From Solar Dynamics Observatory I: Reconnection Flux
- Solar Force-free Magnetic Fields
- Origin and Structures of Solar Eruptions I: Magnetic Flux Rope (Invited Review)
- Structures of Interplanetary Magnetic Flux Ropes and Comparison with Their Solar Sources
- Drifting of the line-tied footpoints of CME flux-ropes
- Magnetic Flux Ropes in the Solar Corona: Structure and Evolution toward Eruption
- Extrapolation of the Solar Coronal Magnetic Field from SDO/HMI Magnetogram by a CESE--MHD--NLFFF Code
- Hooked flare ribbons and flux-rope related QSL footprints
- Estimation of Reconnection Flux using Post-eruption Arcades and Its Relevance to 1-au Magnetic Clouds
- Nonlinear Force-Free Field Extrapolation of a Coronal Magnetic Flux Rope Supporting a Large-Scale Filament from Photospheric Vector Magnetogram
- Using Coronal Loops to Reconstruct the Magnetic Field of an Active Region Before and After a Major Flare
- A Study of Pre-Flare Solar Coronal Magnetic Fields: Magnetic Flux Ropes
- Coronal Flux Ropes and their Interplanetary Counterparts
- Imaging and Spectroscopic Diagnostics on the Formation of Two Magnetic Flux Ropes Revealed by SDO/AIA and IRIS
- A self-consistent nonlinear force-free solution for a solar active region magnetic field
- Flux-Rope Twist in Eruptive Flares and CMEs: due to Zipper and Main-Phase Reconnection
- Statistical Analysis of Torus and Kink Instabilities in Solar Eruptions
- A New Implementation of the Magnetohydrodynamics-Relaxation Method for Nonlinear Force-Free Field Extrapolation in the Solar Corona
- Magnetic field-line lengths inside interplanetary magnetic flux ropes
- On the Characteristics of Footpoints of Solar Magnetic Flux Ropes during the Eruption
- Study of the 3D Coronal Magnetic Field of Active Region 11117 Around the Time of a Confined Flare Using a Data-Driven CESE--MHD Model
- Formation and eruption of a flux rope from the sigmoid active region NOAA 11719 and associated M6.5 flare: A multi-wavelength study
- First nonlinear force-free field extrapolations of SOLIS/VSM data
- Evolution of the Toroidal Flux of CME Flux Ropes during Eruption
- Initiation and Eruption Process of Magnetic Flux Rope from Solar Active Region NOAA 11719 to Earth Directed-CME
- Preprocess the Photospheric Vector Magnetograms for NLFFF Extrapolation using a Potential Field Model and an Optimization Method
- How Does Magnetic Reconnection Drive the Early Stage Evolution of Coronal Mass Ejections?
- Comparison of Two Coronal Magnetic Field Models for Reconstructing a Sigmoidal Solar Active Region With Coronal Loops
- Magnetic Field Modeling of hot channels in Four Flare/CME Events
- On the quasi-three dimensional configuration of magnetic clouds