4 papers
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…