MHD turbulence: a biased review

AA Schekochihin - Journal of Plasma Physics, 2022 - cambridge.org
This review of scaling theories of magnetohydrodynamic (MHD) turbulence aims to put the
developments of the last few years in the context of the canonical time line (from Kolmogorov …

Magnetogenesis in a collisionless plasma: from Weibel instability to turbulent dynamo

M Zhou, V Zhdankin, MW Kunz… - The Astrophysical …, 2023 - iopscience.iop.org
We report on a first-principles numerical and theoretical study of plasma dynamo in a fully
kinetic framework. By applying an external mechanical force to an initially unmagnetized …

Reconnection-driven flares in 3D black hole magnetospheres-A scenario for hot spots around Sagittarius A

I El Mellah, B Cerutti, B Crinquand - Astronomy & Astrophysics, 2023 - aanda.org
Context. Low-luminosity supermassive and stellar-mass black holes (BHs) may be
embedded in a collisionless and highly magnetized plasma. They show nonthermal flares …

Cosmic-void observations reconciled with primordial magnetogenesis

DN Hosking, AA Schekochihin - Nature Communications, 2023 - nature.com
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 …

Reconnection-controlled decay of magnetohydrodynamic turbulence and the role of invariants

DN Hosking, AA Schekochihin - Physical Review X, 2021 - APS
We present a new theoretical picture of magnetically dominated, decaying turbulence in the
absence of a mean magnetic field. With direct numerical simulations, we demonstrate that …

Spontaneous magnetization of collisionless plasma

M Zhou, V Zhdankin, MW Kunz, NF Loureiro… - Proceedings of the …, 2022 - pnas.org
We study within a fully kinetic framework the generation of “seed” magnetic fields through
the Weibel instability, driven in an initially unmagnetized plasma by a large-scale shear …

Scaling of the Hosking integral in decaying magnetically dominated turbulence

H Zhou, R Sharma, A Brandenburg - Journal of Plasma Physics, 2022 - cambridge.org
The Saffman helicity invariant of Hosking & Schekochihin (Phys. Rev. X, vol. 11, issue 4,
2021, 041005), which we here call the Hosking integral, has emerged as an important …

Inverse cascading for initial magnetohydrodynamic turbulence spectra between Saffman and Batchelor

A Brandenburg, R Sharma… - Journal of Plasma Physics, 2023 - cambridge.org
Inverse cascading for initial magnetohydrodynamic turbulence spectra between Saffman and
Batchelor Page 1 J. Plasma Phys. (2023), vol. 89, 905890606 © The Author(s), 2023 …

Multi-scale dynamics of magnetic flux tubes and inverse magnetic energy transfer

M Zhou, NF Loureiro, DA Uzdensky - Journal of Plasma Physics, 2020 - cambridge.org
We report on an analytical and numerical study of the dynamics of a three-dimensional array
of identical magnetic flux tubes in the reduced-magnetohydrodynamic description of the …

Parameter study of decaying magnetohydrodynamic turbulence

A Armua, A Berera, J Calderón-Figueroa - Physical Review E, 2023 - APS
It is well known that helical magnetohydrodynamic (MHD) turbulence exhibits an inverse
transfer of magnetic energy from small to large scales, which is related to the approximate …