92 citations · 396 across the 19 of their papers we have counts for
19 papers
Can plasma physics establish a significant bound on long range dark matter interactions?
K. Schoeffler, N. Shukla, L. O. Silva
Dark matter has been theorized to be charged under its own "dark electromagnetism" (dark-EM). Under this hypothesis, dark matter can behave like a cold collisionless plasma of self…
Magnetic field generation in laser-solid interactions at strong-field QED relevant intensities
Brandon K. Russell, Marija Vranic, Paul T. Campbell +4
Magnetic field generation in ultra-intense laser-solid interactions is studied over a range of laser intensities relevant to next-generation laser facilities () using…
High-energy synchrotron flares powered by strongly radiative relativistic magnetic reconnection: 2D and 3D PIC simulations
K. M. Schoeffler, T. Grismayer, D. Uzdensky +1
The time evolution of high-energy synchrotron radiation generated in a relativistic pair plasma energized by reconnection of strong magnetic fields is investigated with two- and th…
Slowdown of interpenetration of two counterpropagating plasma slab due to collective effects
N. Shukla, K. Schoeffler, J. Vieira +3
The nonlinear evolution of electromagnetic instabilities driven by the interpenetration of two plasma clouds is explored using {\it ab initio} kinetic plasma simulations…
Anisotropic heating and magnetic field generation due to Raman scattering in laser-plasma interactions
Thales Silva, Kevin Schoeffler, Jorge Vieira +3
We identify a mechanism for magnetic field generation in the interaction of intense electromagnetic waves and underdense plasmas. We show that Raman scattered plasma waves trap and…
High-order harmonic generation in an electron-positron-ion plasma
W. L. Zhang, T. Grismayer, K. M. Schoeffler +2
The laser interaction with an electron-positron-ion mixed plasma is studied, from the perspective of the associated high-order harmonic generation. For an idealized mixed plasma wh…
The effects of collisions on the generation and suppression of temperature anisotropies and the Weibel instability
K. M. Schoeffler, L. O. Silva
The expansion of plasma with non-parallel temperature and density gradients, and the generation of magnetic field via the Biermann battery is modeled using particle-in-cell simulat…
Interplay between the Weibel instability and the Biermann battery in realistic laser-solid interactions
N. Shukla, K. Schoeffler, E. Boella +3
A novel setup allows the Weibel instability and its interplay with the Biermann battery to be probed in laser-driven collisionless plasmas. Ab initio particle-in-cell (PIC) simulat…
Extreme Plasma Astrophysics
D. Uzdensky, M. Begelman, A. Beloborodov +22
This is a science white paper submitted to the Astro-2020 and Plasma-2020 Decadal Surveys. The paper describes the present status and emerging opportunities in Extreme Plasma Astro…
Magnetized Current Filaments as a Source of Circularly Polarized Light
U. Sinha, J. Martins, J. Vieira +3
We show that the Weibel or currente filamentation instability can lead to the emission of circularly polarized radiation. Using particle-in-cell (PIC) simulations and a radiation p…
Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields
K. M. Schoeffler, T. Grismayer, D. Uzdensky +2
Strong magnetic fields in magnetospheres of neutron stars (especially magnetars) and other astrophysical objects may release their energy in violent, intense episodes of magnetic r…
Interaction between electrostatic collisionless shocks generates strong magnetic fields
E. Boella, K. Schoeffler, N. Shukla +3
The head-on collision between electrostatic shocks is studied via multi-dimensional Particle-In-Cell simulations. It is found that the shock velocities drop significantly and a str…
General kinetic solution for the Biermann battery with an associated pressure anisotropy generation
K. M. Schoeffler, L. O. Silva
Fully kinetic analytic calculations of an initially Maxwellian distribution with arbitrary density and temperature gradients exhibit the development of temperature anisotropies and…
The fully kinetic Biermann battery and associated generation of pressure anisotropy
K. M. Schoeffler, N. F. Loureiro, L. O. Silva
The dynamical evolution of a fully kinetic, collisionless system with imposed background density and temperature gradients is investigated analytically. The temperature gradient le…
The generation of magnetic fields by the Biermann battery and the interplay with the Weibel instability
K. M. Schoeffler, N. F. Loureiro, R. A. Fonseca +1
An investigation of magnetic fields generated in an expanding bubble of plasma with misaligned temperature and density gradients (driving the Biermann battery mechanism) is perform…
Magnetic field generation and amplification in an expanding plasma
K. M. Schoeffler, N. F. Loureiro, R. A. Fonseca +1
Particle-in-cell simulations are used to investigate the formation of magnetic fields, B, in plasmas with perpendicular electron density and temperature gradients. For system sizes…
Scaling of the growth rate of magnetic islands in the heliosheath
K. M. Schoeffler, J. F. Drake, M. Swisdak
Current sheets thinner than the ion inertial length are unstable to the tearing instability and will develop magnetic islands that grow due to magnetic reconnection. We investigate…
The effects of plasma beta and anisotropy instabilities on the dynamics of reconnecting magnetic fields in the heliosheath
K. M. Schoeffler, J. F. Drake, M. Swisdak
The plasma β (the ratio of the plasma pressure to the magnetic pressure) of a system can have a large effect on its dynamics as high β enhances the effects of pressure anisotropies…
Is the magnetic field in the heliosheath laminar or a turbulent bath of bubbles?
M. Opher, J. F. Drake, M. Swisdak +4
All the current global models of the heliosphere are based on the assumption that the magnetic field in the heliosheath, in the region close to the heliopause is laminar. We argue…