When the primary star in a close binary system evolves into a giant and engulfs its
companion, its core and the companion temporarily orbit each other inside a common …

It is generally believed that long-duration gamma-ray bursts (GRBs) are associated with
massive star core collapse, whereas short-duration GRBs are associated with mergers of …

The mergers of binary compact objects such as neutron stars and black holes are of central
interest to several areas of astrophysics, including as the progenitors of gamma-ray bursts …

Context. Many stars do not live alone, but instead have one or more stellar companions.
Observations show that these binaries, triples, and higher-order multiples are common …

Context. The recent gravitational wave measurements have demonstrated the existence of
stellar mass black hole binaries. It is essential for our understanding of massive star …

Abstract Using the Zwicky Transient Facility alert stream, we are conducting a large
spectroscopic campaign to construct a complete, volume-limited sample of transients …

The spins of merging binary black holes offer insights into their formation history. Recently it
has been argued that in the isolated binary evolution of two massive stars the firstborn black …

Population inference of gravitational-wave catalogues is a useful tool to translate
observations of black hole mergers into constraints on compact-binary formation. Different …

The gamma-ray burst GRB 211211A and its associated kilonova-like emission were
reported recently. A significant difference between this association event and GRB …

We present panchromatic observations and modeling of the Calcium-rich supernova (SN)
2019ehk in the star-forming galaxy M100 (d≈ 16.2 Mpc) starting 10 hr after explosion and …