We establish a generic, fully relativistic formalism to study gravitational-wave emission by
extreme-mass-ratio systems in spherically symmetric, nonvacuum black hole spacetimes …

Previous works have argued that future gravitational-wave detectors will be able to probe
the properties of astrophysical environments where binaries coalesce, including accretion …

Black holes located within a dark matter cloud can create overdensity regions known as dark
matter spikes. The presence of spikes modifies the gravitational-wave signals from binary …

We construct an inspiral-merger-ringdown eccentric gravitational-wave (GW) model for
binary black holes with non-precessing spins within the effective-one-body formalism. This …

We develop a numerical approach to find asymptotically flat black hole solutions coupled to
anisotropic fluids, described by generic density profiles. Our model allows for a variety of …

Orbital eccentricity is a crucial physical effect to unveil the origin of compact-object binaries
detected by ground-and spaced-based gravitational-wave (GW) observatories. Here, we …

The interaction of binary black hole mergers with their environments can be studied using
numerical relativity simulations. These start only a short finite time before merger, at which …

A topological approach has been successfully used to study the properties of the light ring
and the null circular orbit in a generic black hole background. However, for the equatorial …

Intermediate mass ratio inspirals (IMRIs) will be observable with space-based gravitational
wave detectors such as the Llaser interferometer space antenna. To this end, the …

While most binary inspirals are expected to have circularized before they enter the
LIGO/Virgo frequency band, a small fraction of those binaries could have non-negligible …