117 citations · 304 across the 11 of their papers we have counts for
12 papers
Flares and flux ropes: an entangled story
Rony Keppens, Yang Guo, Wenzhi Ruan
Solar flares serve as standard candles for all magnetic-reconnection-based energy releases, and their consequences into the heliosphere can be modeled from first principles. This r…
The Lorentz force at work: multi-phase magnetohydrodynamics throughout a flare lifespan
Wenzhi Ruan, Rony Keppens, Limei Yan +1
The hour-long, gradual phase of solar flares is well-observed across the electromagnetic spectrum, demonstrating many multi-phase aspects, where cold condensations form within the…
Particle Trapping and Acceleration in Turbulent Post-flare Coronal Loops
Fabio Bacchini, Wenzhi Ruan, Rony Keppens
We present a study of energetic-electron trapping and acceleration in the Kelvin-Helmholtz-induced magnetohydrodynamic (MHD) turbulence of post-flare loops in the solar corona. Usi…
Chromospheric evaporation by particle beams in multi-dimensional flare models
Malcolm Keith Druett, Wenzhi Ruan, Rony Keppens
Evaporation of chromospheric plasma by particle beams has been a standard feature of models of solar flares for many decades, supported both by observations of strong hard X-ray br…
Exploring self-consistent 2.5 D flare simulations with MPI-AMRVAC
Malcolm Druett, Wenzhi Ruan, Rony Keppens
Context. Multi-dimensional solar flare simulations have not yet included detailed analysis of the lower atmospheric responses such as down-flowing chromospheric compressions and ch…
MPI-AMRVAC 3.0: updates to an open-source simulation framework
Rony Keppens, Beatrice Popescu Braileanu, Yuhao Zhou +5
Computational astrophysics routinely combines grid-adaptive capabilities with modern shock-capturing, high resolution spatio-temporal schemes on multi-dimensional hydro- and magnet…
MHD turbulence formation in solar flares: 3D simulation and synthetic observations
Wenzhi Ruan, Limei Yan, Rony Keppens
Turbulent plasma motion is common in the universe, and invoked in solar flares to drive effective acceleration leading to high energy electrons. Unresolved mass motions are frequen…
When hot meets cold: post-flare coronal rain
Wenzhi Ruan, Yuhao Zhou, Rony Keppens
Most solar flares demonstrate a prolonged, hourlong post-flare (or gradual) phase, characterized by arcade-like, post-flare loops (PFLs) visible in many extreme ultraviolet (EUV) p…
Transition region adaptive conduction (TRAC) in multidimensional magnetohydrodynamic simulations
Yu-Hao Zhou, Wen-Zhi Ruan, Chun Xia +1
In solar physics, a severe numerical challenge for modern simulations is properly representing a transition region between the million-degree hot corona and a much cooler plasma of…
A fully self-consistent model for solar flares
Wenzhi Ruan, Chun Xia, Rony Keppens
The 'standard solar' flare model collects all physical ingredients identified by multi-wavelength observations of our Sun: magnetic reconnection, fast particle acceleration and the…
Solar flares and Kelvin-Helmholtz instabilities: A parameter survey
Wenzhi Ruan, Chun Xia, Rony Keppens
Hard X-ray (HXR) sources are frequently observed near the top of solar flare loops, and the emission is widely ascribed to bremsstrahlung. We here revisit an alternative scenario w…
Kinetic Simulation of Slow Magnetosonic Waves and Quasi-periodic Upflows in the Solar Corona
Wenzhi Ruan, Jiansen He, Lei Zhang +5
Quasi-periodic disturbances of emission-line parameters are frequently observed in the corona. These disturbances propagate upward along the magnetic field with speeds $\sim100~\rm…