Galactic nuclei harbouring a central supermassive black hole (SMBH), possibly surrounded
by a dense nuclear cluster (NC), represent extreme environments that house a complex …

The so-called Lidov-Kozai oscillation is very well known and applied to various problems in
solar system dynamics. This mechanism makes the orbital inclination and eccentricity of the …

All four circumbinary (CB) protoplanetary disks orbiting short-period (P< 20 days) double-
lined spectroscopic binaries (SB2s)—a group that includes UZ Tau E, for which we present …

Gravitational wave (GW) emissions from extreme-mass-ratio inspirals (EMRIs) are promising
sources for low-frequency GW detectors. They result from a compact object, such as a stellar …

The gravitational three-body problem is a fundamental problem in physics and has
significant applications to astronomy. Three-body configurations are often considered stable …

We use 23 yr of astrometric and radial velocity data on the orbit of the star S0-2 to constrain
a hypothetical intermediate-mass black hole orbiting the massive black hole Sgr A* at the …

It is usually thought that viscous torque works to align a circumbinary disc with the binary's
orbital plane. However, recent numerical simulations suggest that the disc may evolve to a …

With hydrodynamical simulations we examine the evolution of a highly misaligned
circumbinary disc around a black hole binary including the effects of general relativity. We …

The hierarchical nature of galaxy formation suggests that a supermassive black hole binary
could exist in our galactic center. We propose a new approach to constraining the possible …

The dominant mechanism for generating free-floating planets has so far remained elusive.
One suggested mechanism is that planets are ejected from planetary systems due to planet …