35 citations · 44 across the 10 of their papers we have counts for
10 papers
Generative Diffusion Surrogates with Analytical Variance Schedule
Patrick Reichherzer, Gianluca Gregori, David N. Hosking +1
Stochastic transport describes physical systems in which an initially structured distribution spreads under unresolved forcing, scattering, or heterogeneous media. Useful surrogate…
Explosive eruption cycles in a rotating Z-pinch
David N. Hosking, Luca Swinnerton, Rahul Kesavan
A transonic shear flow directed along magnetic field lines can linearly stabilize a steep pressure gradient in a confined magnetohydrodynamic (MHD) plasma. In Z-pinch geometry, we…
Conservation of magnetic-helicity fluctuations due to spatial decorrelation of fluxes in decaying MHD turbulence
Justin Kin Jun Hew, David N. Hosking, Christoph Federrath +2
Hosking & Schekochihin (2021, Phys. Rev. X 11, 041005) have proposed that statistically isotropic decaying MHD turbulence without net magnetic helicity conserves the mean square fl…
Forced 3D reconnection in an exponentially separating magnetic field
David N. Hosking, Ian G. Abel, Steven C. Cowley
We present a solvable scenario for 3D reconnection in a sheared magnetic field. We consider a localized external force that is applied slowly to a flux tube and then maintained, ge…
Metastability of stratified magnetohydrostatic equilibria and their relaxation
David N. Hosking, David Wasserman, Steven C. Cowley
Motivated by explosive releases of energy in fusion, space and astrophysical plasmas, we consider the nonlinear stability of stratified magnetohydrodynamic (MHD) equilibria against…
Cosmic-void observations reconciled with primordial magnetogenesis
David N. Hosking, Alexander A. Schekochihin
It has been suggested that the weak magnetic field hosted by the intergalactic medium in cosmic voids could be a relic from the early Universe. However, accepted models of turbulen…
Emergence of long-range correlations and thermal spectra in forced turbulence
David N. Hosking, Alexander A. Schekochihin
Recent numerical studies have shown that forced, statistically isotropic turbulence develops a `thermal equilibrium' spectrum, , at large scales. This b…
Reconnection-controlled decay of magnetohydrodynamic turbulence and the role of invariants
David N. Hosking, Alexander A. Schekochihin
We present a new theoretical picture of magnetically dominated, decaying turbulence in the absence of a mean magnetic field. We demonstrate that such turbulence is governed by the…
A First-Principle Model for Polarization Swings during Reconnection-Powered Flares
David N. Hosking, Lorenzo Sironi
We show that magnetic reconnection in a magnetically-dominated fast-cooling plasma can naturally produce bright flares accompanied by rotations in the synchrotron polarization vect…
Elasticity of tangled magnetic fields
D. N. Hosking, A. A. Schekochihin, S. A. Balbus
The fundamental difference between incompressible ideal magnetohydrodynamics and the dynamics of a non-conducting fluid is that magnetic fields exert a tension force that opposes t…