128 citations · 448 across the 14 of their papers we have counts for
14 papers
Suppressing spurious oscillations and particle noise in particle-in-cell simulations
Yuxi Chen, Hongyang Zhou, Gabor Toth
Particle-in-cell (PIC) simulations are essential for studying kinetic plasma processes, but they often suffer from statistical noise, especially in plasmas with fast flows. We have…
Simulation Models for Exploring Magnetic Reconnection
Michael Shay, Subash Adhikari, Naoki Beesho +22
Simulations have played a critical role in the advancement of our knowledge of magnetic reconnection. However, due to the inherently multiscale nature of reconnection, it is imposs…
MESSENGER observations of Mercury's planetary ion escape rates and their dependence on true anomaly angle
Weijie Sun, Ryan M. Dewey, Xianzhe Jia +11
This study investigates the escape of Mercury's sodium-group ions (Na+-group, including ions with m/q from 21 to 30 amu/e) and their dependence on true anomaly angle (TAA), i.e., M…
A kinetic-magnetohydrodynamic model with adaptive mesh refinement for modeling heliosphere neutral-plasma interaction
Yuxi Chen, Gabor Toth, Erick Powell +4
The charge exchange between the interstellar medium (ISM) and the solar wind plasma is crucial for determining the structures of the heliosphere. Since both the neutral-ion and neu…
Numerical Study of Magnetic Island Coalescence Using Magnetohydrodynamics With Adaptively Embedded Particle-In-Cell Model
Dion Li, Yuxi Chen, Chuanfei Dong +2
Collisionless magnetic reconnection typically requires kinetic treatments that are, in general, computationally expensive compared to fluid-based models. In this study, we use the…
Magnetohydrodynamic with Adaptively Embedded Particle-in-Cell model: MHD-AEPIC
Yinsi Shou, Valeriy Tenishev, Yuxi Chen +2
Space plasma simulations have seen an increase in the use of magnetohydrodynamic (MHD) with embedded Particle-in-Cell (PIC) models. This combined MHD-EPIC algorithm simulates some…
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…
Kinetic Modeling of Magnetospheres
Stefano Markidis, Vyacheslav Olshevsky, Gabor Toth +4
This paper presents the state of the art of kinetic modeling techniques for simulating plasma kinetic dynamics in magnetospheres. We describe the critical numerical techniques for…
Magnetohydrodynamic with embedded particle-in-cell simulation of the Geospace Environment Modeling dayside kinetic processes challenge event
Yuxi Chen, Gabor Toth, Heli Hietala +7
We use the MHD with embedded particle-in-cell model (MHD-EPIC) to study the Geospace Environment Modeling (GEM) dayside kinetic processes challenge event at 01:50-03:00 UT on 2015-…
Validation of the Alfvén Wave Solar atmosphere Model (AWSoM) with Observations from the Low Corona to 1 AU
N. Sachdeva, B. van der Holst, W. B. Manchester +9
We perform a validation study of the latest version of the Alfvén Wave Solar atmosphere Model (AWSoM) within the Space Weather Modeling Framework (SWMF). To do so, we compare the s…
Studying dawn-dusk asymmetries of Mercury's magnetotail using MHD-EPIC simulations
Yuxi Chen, Gabor Toth, Xianzhe Jia +5
MESSENGER has observed a lot of dawn-dusk asymmetries in Mercury's magnetotail, such as the asymmetries of the cross-tail current sheet thickness and the occurrence of flux ropes,…
A Six-moment Multi-fluid Plasma Model
Zhenguang Huang, Gabor Toth, Bart van der Holst +2
We present a six-moment multi-fluid model, which solves the governing equations for both ions and electrons, with pressure anisotropy along and perpendicular to the magnetic field…
Gauss's Law Satisfying Energy-Conserving Semi-Implicit Particle-in-Cell Method
Yuxi Chen, Gabor Toth
The Energy Conserving Semi-Implicit Method (ECSIM) introduced by Lapenta (2017) has many advantageous properties compared to the classical semi-implicit and explicit PIC methods. M…
Global three-dimensional simulation of Earth's dayside reconnection using a two-way coupled magnetohydrodynamics with embedded particle-in-cell model: initial results
Yuxi Chen, Gabor Toth, Paul Cassak +6
We perform a three-dimensional (3D) global simulation of Earth's magnetosphere with kinetic reconnection physics to study the flux transfer events (FTEs) and dayside magnetic recon…