Sparking Dynamic, Relativistic Magnetic Reconnection in a Twisted Flux Tube
A local disturbance sparks reconnection in a twisted magnetic flux tube, generating intermittent currents and plasma heating. Led by CITA graduate student Michael Grehan.
Oct 15, 2026
Local relaxation and scale-dependent alignment in compressible, magnetized turbulence
Accepted in PRL! Simulations reveal how turbulent plasma forms locally aligned patches and how that alignment changes across scales.
Sep 15, 2026
Conservation of magnetic-helicity fluctuations due to spatial decorrelation of fluxes in decaying MHD turbulence
The Hosking invariant is only conditionally an invariant! (lead author: Justin Kin Jun Hew)
Nov 1, 2025
The growth of magnetic energy during the nonlinear phase of the subsonic and supersonic small-scale dynamo
The nonlinear turbulent dynamo is highly universal! (lead author: Neco Kriel)
Sep 15, 2025
The spectrum of magnetized turbulence in the interstellar medium
The energy spectrum and key turbulence statistics from ISM-style turbulence.
May 16, 2025
Comparison of magnetic diffusion and reconnection in ideal and resistive relativistic magnetohydrodynamics, ideal magnetodynamics and resistive force-free electrodynamics
Relativistic reconnection is very similar across a broad range of plasma models! (lead author: Michael Grehan)
Mar 25, 2025
Fundamental MHD scales -- II: the kinematic phase of the supersonic small-scale dynamo
The supersonic turbulent dynamo, relevant to the cold ISM and thin accretion disks, is very different from the incompressible Kazanstev theory. (lead author: Neco Kriel)
Jan 31, 2025
Magnetized compressible turbulence with a fluctuation dynamo and Reynolds numbers over a million
The results from the world's largest MHD turbulence simulation are on the arXiv -- everything from cascades, scale-dependent alignment, to anisotropy and plasmoid instabilities.
May 29, 2024
Growth or Decay - I: universality of the turbulent dynamo saturation
The saturation of the turbulent dynamo is universal to the initial seed magnetic field!
Sep 1, 2023
The density distribution and physical origins of intermittency in supersonic, highly magnetized turbulence with diverse modes of driving
The mass density distribution function of supersonic turbulence is approximately lognormal. Here we review some of the most popular nonlognormal models.
Dec 1, 2022