Strong constraints on decay and annihilation of dark matter from heating of gas-rich dwarf galaxies

D Wadekar, Z Wang - Physical Review D, 2022 - APS
Gas-rich dwarf galaxies located outside the virial radius of their host are relatively pristine
systems and have ultralow gas cooling rates. This makes them very sensitive to heat …

Intracluster magnetic filaments and an encounter with a radio jet

L Rudnick, M Brüggen, G Brunetti… - The Astrophysical …, 2022 - iopscience.iop.org
Thin synchrotron-emitting filaments are increasingly seen in the intracluster medium (ICM).
We present the first example of a direct interaction between a magnetic filament, a radio jet …

Reconciling cosmic ray transport theory with phenomenological models motivated by Milky-Way data

P Kempski, E Quataert - Monthly Notices of the Royal …, 2022 - academic.oup.com
Phenomenological models of cosmic ray (CR) transport in the Milky Way can reproduce a
wide range of observations assuming that CRs scatter off of magnetic-field fluctuations with …

Cosmic-ray acceleration and magnetic fields in galaxy clusters and beyond: Insights from radio observations

D Wittor - Universe, 2023 - mdpi.com
The discovery of diffuse radio emission in galaxy clusters proved the existence of energetic
cosmic-ray electrons and cosmic magnetic fields on Mpc-scales in the Universe …

Particle transport through localized interactions with sharp magnetic field bends in MHD turbulence

M Lemoine - Journal of Plasma Physics, 2023 - cambridge.org
Particle transport through localized interactions with sharp magnetic field bends in MHD
turbulence Page 1 J. Plasma Phys. (2023), vol. 89, 175890501 © The Author(s), 2023 …

Superdiffusion of cosmic rays in compressible magnetized turbulence

Y Hu, A Lazarian, S Xu - Monthly Notices of the Royal …, 2022 - academic.oup.com
Owing to the complexity of turbulent magnetic fields, modelling the diffusion of cosmic rays is
challenging. Based on the current understanding of anisotropic magnetohydrodynamic …

Cosmic ray streaming in the turbulent interstellar medium

S Xu, A Lazarian - The Astrophysical Journal, 2022 - iopscience.iop.org
We study the streaming instability of GeV− 100 GeV cosmic rays (CRs) and its dam** in
the turbulent interstellar medium (ISM). We find that the dam** of streaming instability is …

Efficient micromirror confinement of sub-teraelectronvolt cosmic rays in galaxy clusters

P Reichherzer, AFA Bott, RJ Ewart, G Gregori… - Nature …, 2025 - nature.com
Cosmic rays (CRs) play a pivotal role in sha** the thermal and dynamical properties of
astrophysical environments, such as galaxies and galaxy clusters. Recent observations …

Mirror Acceleration of Cosmic Rays in a High-β Medium

A Lazarian, S Xu - The Astrophysical Journal, 2023 - iopscience.iop.org
In a weakly compressible high-β medium, pitch-angle scattering and the associated
scattering acceleration of cosmic rays (CRs) by anisotropic Alfvén and slow modes of …

Multiphase magnetic fields in the galaxy NGC 3627

M Liu, Y Hu, A Lazarian, S Xu… - Monthly Notices of the …, 2023 - academic.oup.com
Magnetic fields play an important role in the formation and evolution of a galaxy, but it is
challenging to measure them by observation. Here, we study the Seyfert galaxy NGC 3627's …