56 citations · 283 across the 17 of their papers we have counts for
17 papers
A database of MMS bow shock crossings compiled using machine learning
A. Lalti, Yu. V. Khotyaintsev, A. P. Dimmock +3
Identifying collisionless shock crossings in data sent from spacecraft has so far been done manually. It is a tedious job that shock physicists have to go through if they want to c…
A comparison of methods for finding magnetic nulls in simulations and in situ observations of space plasmas
Vyacheslav Olshevsky, David Pontin, Benjamin Williams +5
Magnetic nulls are ubiquitous in space plasmas, and are of interest as sites of localized energy dissipation or magnetic reconnection. As such, a number of methods have been propos…
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…
The role of interactive super-computing in using HPC for urgent decision making
Nick Brown, Rupert Nash, Gordon Gibb +4
Technological advances are creating exciting new opportunities that have the potential to move HPC well beyond traditional computational workloads. In this paper we focus on the po…
Automated classification of plasma regions using 3D particle energy distributions
Vyacheslav Olshevsky, Yuri V. Khotyaintsev, Ahmad Lalti +8
We investigate the properties of the ion sky maps produced by the Dual Ion Spectrometers (DIS) from the Fast Plasma Investigation (FPI). We have trained a convolutional neural netw…
Multi-GPU Acceleration of the iPIC3D Implicit Particle-in-Cell Code
Chaitanya Prasad Sishtla, Steven W. D. Chien, Vyacheslav Olshevsky +2
iPIC3D is a widely used massively parallel Particle-in-Cell code for the simulation of space plasmas. However, its current implementation does not support execution on multiple GPU…
TensorFlow Doing HPC
Steven W. D. Chien, Stefano Markidis, Vyacheslav Olshevsky +3
TensorFlow is a popular emerging open-source programming framework supporting the execution of distributed applications on heterogeneous hardware. While TensorFlow has been initial…
Particle-in-Cell Simulations of Plasma Dynamics in Cometary Environment
Chaitanya Prasad Sishtla, Vyacheslav Olshevsky, Steven W. D. Chien +2
We perform and analyze global Particle-in-Cell (PIC) simulations of the interaction between solar wind and an outgassing comet with the goal of studying the plasma kinetic dynamics…
Properties of turbulence in the reconnection exhaust: numerical simulations compared with observations
F. Pucci, S. Servidio, L. Sorriso-Valvo +6
The properties of the turbulence which develops in the outflows of magnetic reconnection have been investigated using self-consistent plasma simulations, in three dimensions. As co…
Generation of turbulence in colliding reconnection jets
F. Pucci, W. H. Matthaeus, A. Chasapis +6
The collision of magnetic reconnection jets is studied by means of a three dimensional numerical simulation at kinetic scale, in the presence of a strong guide field. We show that…
Non-linear Waves and Instabilities Leading to Secondary Reconnection in Reconnection Outflows
Giovanni Lapenta, Francesco Pucci, Vyacheslav Olshevsky +4
Reconnection outflows are regions of intense recent scrutiny, from in situ observations and from simulations. These regions are host to a variety of instabilities and intense energ…
PolyPIC: the Polymorphic-Particle-in-Cell Method for Fluid-Kinetic Coupling
Stefano Markidis, Vyacheslav Olshevsky, Chaitanya Prasad Sishtla +3
Particle-in-Cell (PIC) methods are widely used computational tools for fluid and kinetic plasma modeling. While both the fluid and kinetic PIC approaches have been successfully use…
Slurm: fluid particle-in-cell code for plasma modeling
Vyacheslav Olshevsky, Fabio Bacchini, Stefaan Poedts +1
With the approach of exascale computing era, particle-based models are becoming the focus of research due to their excellent scalability. We present a new code, Slurm, which implem…
Magnetic null points in kinetic simulations of space plasmas
Vyacheslav Olshevsky, Jan Deca, Andrey Divin +5
We present a systematic attempt to study magnetic null points and the associated magnetic energy conversion in kinetic Particle-in-Cell simulations of various plasma configurations…
Role of Z-pinches in magnetic reconnection in space plasmas
Vyacheslav Olshevsky, Giovanni Lapenta, Stefano Markidis +1
A widely accepted scenario of magnetic reconnection in collisionless space plasmas is the breakage of magnetic field lines in X-points. In laboratory, reconnection is commonly stud…
Energy dissipation in magnetic null points at kinetic scales
Vyacheslav Olshevsky, Andrey Divin, Elin Eriksson +2
We use kinetic particle-in-cell and magnetohydrodynamic simulations supported by an observational dataset to investigate magnetic reconnection in clusters of null points in space p…
Turbulent convection in the Sun: modeling in unstructured meshes
Vyacheslav Olshevsky, Chunlei Liang, Frank Ham
We adopted an unstructured hydrodynamical solver CharLES to the problem of global convection in the Sun. With the aim to investigate the properties of solar turbulent convection an…