Turbulence is ubiquitous in astrophysics. It radically changes many astrophysical
phenomena, in particular, the propagation and acceleration of cosmic rays. We present the …

The nature of cosmic ray (CR) transport in the Milky Way remains elusive. The predictions of
current microphysical CR transport models in magnetohydrodynamic (MHD) turbulence are …

The Galactic center supermassive black hole Sagittarius A*(Sgr A*) is one of the most
promising targets to study the dynamics of black hole accretion and outflow via direct …

Radio images of the Galactic Center supermassive black hole, Sagittarius A*(Sgr A*), are
dominated by interstellar scattering. Previous studies of Sgr A* have adopted an anisotropic …

We present new high-resolution observations of Sagittarius A* at wavelengths of 17.4-23.8
cm with the Very Large Array in the A configuration with the Pie Town Very Long Baseline …

Abstract Observations of the Galactic Center supermassive black hole Sagittarius A*(Sgr A*)
with very long-baseline interferometry (VLBI) are affected by interstellar scattering along our …

The interstellar medium hosts a population of scattering screens, most of unknown origin.
Scintillation studies of pulsars provide a sensitive tool for resolving these scattering screens …

By following the Kazantsev theory and taking into account both microscopic and turbulent
diffusion of magnetic fields, we develop a unified treatment of the kinematic and nonlinear …

We show that surface waves along interstellar current sheets closely aligned with the line of
sight lead to pulsar scintillation properties consistent with those observed. This mechanism …

In the standard gravitational lensing scenario, rays from a background source are bent in the
direction of a foreground lensing mass distribution. Diverging lens behaviour produces …