131 citations · 709 across the 22 of their papers we have counts for
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Radiative Magnetohydrodynamic Simulation of the Confined Eruption of a Magnetic Flux Rope: Unveiling the Driving and Constraining Forces
Can Wang, Feng Chen, Mingde Ding +1
We analyse the forces that control the dynamic evolution of a flux rope eruption in a three-dimensional (3D) radiative magnetohydrodynamic (RMHD) simulation. The confined eruption…
Eruption of a Magnetic Flux Rope in a Comprehensive Radiative Magnetohydrodynamic Simulation of flare-productive active regions
Feng Chen, Matthias Rempel, Yuhong Fan
Radiative magnetohydrodynamic simulation includes sufficiently realistic physics to allow for the synthesis of remote sensing observables that can be quantitatively compared with o…
Solar coronal magnetic field measurements using spectral lines available in Hinode/EIS observations: Strong and weak field techniques and temperature diagnostics
Yajie Chen, Xianyong Bai, Hui Tian +4
Recently, it has been proposed that the magnetic-field-induced transition (MIT) in Fe X can be used to measure coronal magnetic field strengths. Several techniques, the direct line…
Data-Driven Radiative Magnetohydrodynamics Simulations with the MURaM code
Feng Chen, Mark C. M. Cheung, Matthias Rempel +1
We present a method of conducting data-driven simulations of solar active regions and flux emergence with the MURaM radiative magnetohydrodynamics (MHD) code. The horizontal electr…
Radiative Magnetohydrodynamic Simulation of the Confined Eruption of a Magnetic Flux Rope: Magnetic Structure and Plasma Thermodynamics
Can Wang, Feng Chen, Mingde Ding +1
It is widely believed that magnetic flux ropes are the key structure of solar eruptions; however, their observable counterparts are not clear yet. We study a flare associated with…
Parallel plasma loops and the energization of the solar corona
Hardi Peter, Lakshmi Pradeep Chitta, Feng Chen +15
The outer atmosphere of the Sun is composed of plasma heated to temperatures well in excess of the visible surface. We investigate short cool and warm (<1 MK) loops seen in the cor…
Magnetic helicity estimations in models and observations of the solar magnetic field. Part IV: Application to solar observations
J. K. Thalmann, M. K. Georgoulis, Y. Liu +8
In this ISSI-supported series of studies on magnetic helicity in the Sun, we systematically implement different magnetic helicity calculation methods on high-quality solar magnetog…
Forward Modeling of Solar Coronal Magnetic Field Measurements Based on a Magnetic-field-induced Transition in Fe X
Yajie Chen, Wenxian Li, Hui Tian +6
It was recently proposed that the intensity ratios of several extreme ultraviolet spectral lines from the Fe X ion can be used to measure the solar coronal magnetic field based on…
A Comprehensive Radiative Magnetohydrodynamics Simulation of Active Region Scale Flux Emergence from the Convection Zone to the Corona
Feng Chen, Matthias Rempel, Yuhong Fan
We present a comprehensive radiative magnetohydrodynamic simulation of the quiet Sun and large solar active regions. The 197 Mm wide simulation domain spans from 18 (10) Mm beneath…
Exploring the Nature of EUV Waves in a Radiative Magnetohydrodynamic Simulation
Can Wang, Feng Chen, Mingde Ding
Coronal extreme-ultraviolet (EUV) waves are large-scale disturbances propagating in the corona, whose physical nature and origin have been discussed for decades. We report the firs…
Magnetic Helicity Estimations in Models and Observations of the Solar Magnetic Field. Part III: Twist Number Method
Y. Guo, E. Pariat, G. Valori +7
We study the writhe, twist and magnetic helicity of different magnetic flux ropes, based on models of the solar coronal magnetic field structure. These include an analytical force-…
Emergence of magnetic flux generated in a solar convective dynamo. I: Formation of Sunspots and Active regions, and Origin of Their Asymmetries
Feng Chen, Matthias Rempel, Yuhong Fan
We present a realistic numerical model of sunspot and active region formation based on the emergence of flux bundles generated in a solar convective dynamo. To this end we use the…
Current systems of coronal loops in 3D MHD simulations
Jörn Warnecke, Feng Chen, Sven Bingert +1
We study the magnetic field and current structure associated with a coronal loop. Through this we investigate to what extent the assumptions of a force-free magnetic field break do…
Magnetic helicity estimations in models and observations of the solar magnetic field. Part I: Finite volume methods
Gherardo Valori, Etienne Pariat, Sergey Anfinogentov +7
Magnetic helicity is a conserved quantity of ideal magneto-hydrodynamics characterized by an inverse turbulent cascade. Accordingly, it is often invoked as one of the basic physica…
Magnetic reconnection between a solar filament and nearby coronal loops
Leping Li, Jun Zhang, Hardi Peter +5
Magnetic reconnection, the rearrangement of magnetic field topology, is a fundamental physical process in magnetized plasma systems all over the universe1,2. Its process is difficu…
Bidirectional outflows as evidence of magnetic reconnection leading to a solar microflare
Jie Hong, M. D. Ding, Ying Li +5
Magnetic reconnection is a rapid energy release process that is believed to be responsible for flares on the Sun and stars. Nevertheless, such flare-related reconnection is mostly…
Heating and cooling of coronal loops observed by SDO
Leping Li, Hardi Peter, Feng Chen +1
Context: One of the most prominent processes suggested to heat the corona to well above 10^6 K builds on nanoflares, short bursts of energy dissipation. Aims: We compare observatio…
Using coronal seismology to estimate the magnetic field strength in a realistic coronal model
Feng Chen, Hardi Peter
Coronal seismology is extensively used to estimate properties of the corona, e.g. the coronal magnetic field strength are derived from oscillations observed in coronal loops. We pr…
Magnetic Jam in the Corona of the Sun
F. Chen, H. Peter, S. Bingert +1
The outer solar atmosphere, the corona, contains plasma at temperatures of more than a million K, more than 100 times hotter that solar surface. How this gas is heated is a fundame…
Self-absorption in the solar transition region
Limei Yan, Hardi Peter, Jiansen He +7
Transient brightenings in the transition region of the Sun have been studied for decades and are usually related to magnetic reconnection. Recently, absorption features due to chro…
Conversion from mutual helicity to self-helicity observed with IRIS
Leping Li, Hardi Peter, Feng Chen +1
Context. In the upper atmosphere of the Sun observations show convincing evidence for crossing and twisted structures, which are interpreted as mutual helicity and self-helicity. A…
A model for the formation of the active region corona driven by magnetic flux emergence
F. Chen, H. Peter, S. Bingert +1
We present the first model that couples the formation of the corona of a solar active region to a model of the emergence of a sunspot pair. This allows us to study when, where, and…