Gravitational-wave detections are enabling measurements of the rate of coalescences of
binaries composed of two compact objects—neutron stars and/or black holes. The …

The production of about half of the heavy elements found in nature is assigned to a specific
astrophysical nucleosynthesis process: the rapid neutron-capture process (r process) …

On 2017 August 17 a binary neutron star coalescence candidate (later designated
GW170817) with merger time 12: 41: 04 UTC was observed through gravitational waves by …

Abstract We report the INTernational Gamma-ray Astrophysics Laboratory (INTEGRAL)
detection of the short gamma-ray burst GRB 170817A (discovered by Fermi-GBM) with a …

Merging neutron stars offer an excellent laboratory for simultaneously studying strong-field
gravity and matter in extreme environments. We establish the physical association of an …

Abstract We present the Dark Energy Camera (DECam) discovery of the optical counterpart
of the first binary neutron star merger detected through gravitational-wave emission …

We compile observations of early-type binaries identified via spectroscopy, eclipses, long-
baseline interferometry, adaptive optics, common proper motion, etc. Each observational …

Abstract On 2017 August 17, the gravitational-wave event GW170817 was observed by the
Advanced LIGO and Virgo detectors, and the gamma-ray burst (GRB) GRB 170817A was …

Recent numerical simulations in general relativistic magnetohydrodynamics (GRMHD)
provide useful constraints for the interpretation of the GW170817 discovery. Combining the …

We summarize our current knowledge of neutron-star masses and radii. Recent
instrumentation and computational advances have resulted in a rapid increase in the …