128 citations · 310 across the 15 of their papers we have counts for
15 papers
Counterintuitive Magnetic Connectivity and Energetic Particle Flux Differences among Nearby Spacecraft During the 2023 February 24 Solar Energetic Particle Event
Weihao Liu, Xianyu Liu, David Lario +4
For solar energetic particles (SEPs), it is generally expected that observers magnetically closer to the eruption source region exhibit higher particle intensities than those poorl…
Effects of Coronal Magnetic Field Configuration on Particle Acceleration and Release during the Ground Level Enhancement Events in Solar Cycle 24
Wenlong Liu, Xiangliang Kong, Fan Guo +6
Ground level enhancements (GLEs) are extreme solar energetic particle (SEP) events that are of particular importance in space weather. In solar cycle 24, two GLEs were recorded on…
Numerical Modeling of Energetic Electron Acceleration, Transport, and Emission in Solar Flares: Connecting Loop-top and Footpoint Hard X-Ray Sources
Xiangliang Kong, Bin Chen, Fan Guo +8
The acceleration and transport of energetic electrons during solar flares is one of the outstanding topics in solar physics. Recent X-ray and radio imaging and spectroscopy observa…
Modeling the Solar Wind During Different Phases of the Last Solar Cycle
Zhenguang Huang, Gabor Toth, Nishtha Sachdeva +5
We describe our first attempt to systematically simulate the solar wind during different phases of the last solar cycle with the Alfvén Wave Solar atmosphere Model (AWSoM) develope…
Application of the Monte Carlo Method in Modeling Transport and Acceleration of Solar Energetic Particles
Valeriy Tenishev, Lulu Zhao, Igor Sokolov
The need for quantitative characterization of the solar energetic particle (SEP) dynamics goes beyond being an academic discipline only. It has numerous practical implications rela…
Stream-Aligned Magnetohydrodynamics for Solar Wind Simulations
Igor V Sokolov, Lulu Zhao, Tamas I Gombosi
We present a reduced magnetohydrodynamic (MHD) mathematical model describing the dynamical behavior of highly conducting plasmas with frozen-in magnetic fields, constrained by the…
Variable Ion Compositions of Solar Energetic Particle Events in the Inner Heliosphere: A Field-line Braiding Model with Compound Injections
Fan Guo, Lulu Zhao, Christina M. S. Cohen +8
We propose a model for interpreting highly variable ion composition ratios in solar energetic particles (SEP) events recently observed by Parker Solar Probe (PSP) at a…
What Sustained Multi-Disciplinary Research Can Achieve: The Space Weather Modeling Framework
Tamas I. Gombosi, Yuxi Chen, Alex Glocer +15
MHD-based global space weather models have mostly been developed and maintained at academic institutions. While the "free spirit" approach of academia enables the rapid emergence a…
Shock Propagation and Associated Particle Acceleration in the Presence of Ambient Solar-Wind Turbulence
Fan Guo, Joe Giacalone, Lulu Zhao
The topic of this review paper is on the influence of solar wind turbulence on shock propagation and its consequence on the acceleration and transport of energetic particles at sho…
High Resolution Finite Volume Method for Kinetic Equations with Poisson Brackets
Igor V. Sokolov, Haomin Sun, Gabor Toth +6
Simulation of plasmas in electromagnetic fields requires numerical solution of a kinetic equation that describes the time evolution of the particle distribution function. In this p…
Statistical analysis of interplanetary magnetic field path lengths from solar energetic electron events observed by WIND
Lulu Zhao, Gang Li, Ming Zhang +3
We calculate the interplanetary magnetic field path lengths traveled by electrons in solar electron events detected by the WIND 3DP instrument from to . The velocity d…
Automated detection of small-scale magnetic flux ropes in the solar wind: First results from the Wind spacecraft measurements
Qiang Hu, Jinlei Zheng, Yu Chen +2
We have developed a new automated small-scale magnetic flux rope (SSMFR) detection algorithm based on the Grad-Shafranov (GS) reconstruction technique. We have applied this detecti…
Modeling Transport of Energetic Particles in Corotating Interaction Region -- A case Study
Lulu Zhao, Gang Li, R. W. Ebert +5
We investigate energetic particle transport in Corotating Interaction Regions (CIRs) through a case study. The CIR event we study occurred on February and was observed…
Probing shock geometry via the charge to mass ratio dependence of heavy ion spectra from multiple spacecraft observations of the 2013 November 4 event
Lulu Zhao, Gang Li, G. M. Mason +5
In large SEP events, ions can be accelerated at CME-driven shocks to very high energies. Spectra of heavy ions in many large SEP events show features such as roll-overs or spectral…
First- and Second-order Fermi Acceleration at Parallel Shocks
Arto Sandroos, Gang Li, Lulu Zhao
We report on a new Monte Carlo method for simulating diffusive shock acceleration (DSA) of solar energetic particles at upstream and downstream regions of quasi-parallel collisionl…