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 …

The hierarchical triple-body approximation has useful applications to a variety of systems
from planetary and stellar scales to supermassive black holes. In this approximation, the …

We report on the population properties of compact binary mergers inferred from gravitational-
wave observations of these systems during the first three LIGO-Virgo observing runs. The …

Binary black holes (BBHs) may form both through isolated binary evolution and through
dynamical interactions in dense stellar environments. The formation channel leaves an …

The direct detection of gravitational waves,,, from merging binary black holes opens up a
window into the environments in which binary black holes form. One signature of such …

Many close stellar binaries are accompanied by a faraway star. The" eccentric Kozai-
Lidov"(EKL) mechanism can cause dramatic inclination and eccentricity fluctuations …

The LIGO and Virgo detectors have directly observed gravitational waves from mergers of
pairs of stellar-mass black holes, along with a smaller number of mergers involving neutron …

It is possible to learn about the orientation of a star's rotation axis by combining
measurements of the star's rotation velocity (v) and its projection onto our line of sight (v sin …

Dynamical Formation of Close Binaries during the Pre-main-sequence Phase - IOPscience
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The orientation between a star's spin axis and a planet's orbital plane provides valuable
information about the system's formation and dynamical history. For non-transiting planets at …