Turbulent processes and mean-field dynamo

A Brandenburg, D Elstner, Y Masada, V Pipin - Space Science Reviews, 2023 - Springer
Mean-field dynamo theory has important applications in solar physics and galactic
magnetism. We discuss some of the many turbulence effects relevant to the generation of …

Computational approaches to modeling dynamos in galaxies

MJ Korpi-Lagg, MM Mac Low, FA Gent - Living Reviews in Computational …, 2024 - Springer
Galaxies are observed to host magnetic fields with a typical total strength of around 15 μ G.
A coherent large-scale field constitutes up to a few microgauss of the total, while the rest is …

The coherent magnetic field of the Milky Way

M Unger, GR Farrar - The Astrophysical Journal, 2024 - iopscience.iop.org
We present a suite of models of the coherent magnetic field of the Galaxy based on new
divergence-free parametric functions describing the global structure of the field. The model …

[HTML][HTML] Disentangling the Faraday rotation sky

S Hutschenreuter, M Haverkorn, P Frank… - Astronomy & …, 2024 - aanda.org
Context. Magnetic fields permeate the diffuse interstellar medium (ISM) of the Milky Way,
and are essential to explain the dynamical evolution and current shape of the Galaxy …

Intergalactic medium rotation measure of primordial magnetic fields

S Mtchedlidze, P Domínguez-Fernández… - The Astrophysical …, 2024 - iopscience.iop.org
The Faraday rotation effect, quantified by the rotation measure (RM), is a powerful probe of
the large-scale magnetization of the Universe—tracing magnetic fields not only on galaxy …

Strong turbulence and magnetic coherent structures in the interstellar medium

E Ntormousi, L Vlahos, A Konstantinou… - Astronomy & …, 2024 - aanda.org
Context. Magnetic turbulence is classified as weak or strong based on the relative amplitude
of the magnetic field fluctuations compared to the mean field. These two classes have …

Unified treatment of mean-field dynamo and angular-momentum transport in magnetorotational instability-driven turbulence

T Mondal, P Bhat - Physical Review E, 2023 - APS
Magnetorotational instability–driven (MRI-driven) turbulence and dynamo phenomena are
analyzed using direct statistical simulations. Our approach begins by developing a unified …

Structure functions with higher-order stencils as a probe to separate small-and large-scale magnetic fields

A Seta, C Federrath - Monthly Notices of the Royal Astronomical …, 2024 - academic.oup.com
Magnetic fields are an energetically important component of star formation galaxies, but it is
often difficult to measure their properties from observations. One of the complexities stems …

General-relativistic gauge-invariant magnetic helicity transport: Basic formulation and application to neutron star mergers

J Wu, ER Most - Physical Review D, 2024 - APS
Dynamo processes are ubiquitous in astrophysical systems. In relativistic astrophysical
systems, such as accretion disks around black holes or neutron stars, they may critically …

Polarized dust emission in Arp220: magnetic fields in the core of an ultraluminous infrared Galaxy

DL Clements, Q Zhang, K Pattle… - Monthly Notices of …, 2025 - academic.oup.com
Arp 220 is the prototypical ultraluminous infrared Galaxy (ULIRG), and one of the brightest
objects in the extragalactic far-infrared sky. It is the result of a merger between two gas rich …