We review recent works on the dynamics of circumbinary accretion, including time variability,
angular momentum transfer between the disk and the binary, and the secular evolution of …

The rotation of a star and the revolutions of its planets are not necessarily aligned. This
article reviews the measurement techniques, key findings, and theoretical interpretations …

Observational advances over the last decade have enabled high-resolution, interferometric
studies of forming multiple systems, statistical surveys of multiplicity in star-forming regions …

Black hole and neutron star X-ray binary systems routinely show quasi-periodic oscillations
(QPOs) in their X-ray flux. Despite being strong, easily measurable signals, their physical …

Gas falling into a black hole (BH) from large distances is unaware of BH spin direction, and
misalignment between the accretion disc and BH spin is expected to be common. However …

We present Phantom, a fast, parallel, modular, and low-memory smoothed particle
hydrodynamics and magnetohydrodynamics code developed over the last decade for …

In this paper, we revisit the issue of the propagation of warps in thin and viscous accretion
discs. In this regime, warps are known to propagate diffusively, with a diffusion coefficient …

We characterize the infall rate onto protostellar systems forming in self-gravitating radiation-
hydrodynamics simulations. Using two dimensionless parameters to determine the disks' …

In a recent paper, we have shown that the evolution of a misaligned disc around a spinning
black hole can result in tearing the disc into many distinct planes. Tearing discs with random …

We study the radiation-driven warping of accretion discs in the context of X-ray binaries. The
latest evolutionary equations are adopted, which extend the classical alpha theory to time …