Abstract The Laser Interferometer Space Antenna (LISA) will be a transformative experiment
for gravitational wave astronomy, and, as such, it will offer unique opportunities to address …

This work aims to present our current best physical understanding of common-envelope
evolution (CEE). We highlight areas of consensus and disagreement, and stress ideas …

We report discovery of a bright, nearby () Sun-like star orbiting a dark object. We identified
the system as a black hole candidate via its astrometric orbital solution from the Gaia …

Double neutron star (DNS) systems represent extreme physical objects and the endpoint of
an exotic journey of stellar evolution and binary interactions. Large numbers of DNS systems …

The first gravitational wave detections of mergers between black holes and neutron stars
represent a remarkable new regime of high-energy transient astrophysics. The signals …

Most massive stars are members of a binary or a higher-order stellar system, where the
presence of a binary companion can decisively alter their evolution via binary interactions …

Aims. During the last~ 50 years, the population of black hole candidates in X-ray binaries
has increased considerably, with 59 Galactic objects being detected in transient low-mass X …

Introduction Neutron stars with masses above 1.8 solar masses (M☉), possess extreme
gravitational fields, which may give rise to phenomena outside general relativity. These …

Neutron stars are composed of the densest form of matter known to exist in our Universe, the
composition and properties of which are still theoretically uncertain. Measurements of the …

With the advent of more sensitive all-sky instruments, the transient universe is being probed
in greater depth than ever before. Taking advantage of available resources, we have …