The axion is a highly motivated elementary particle that could address two fundamental
questions in physics—the strong charge-parity (CP) problem and the dark matter mystery …

We review the current status of general relativistic studies for coalescences of black hole–
neutron star binaries. First, high-precision computations of black hole–neutron star binaries …

Using numerical relativity simulations with a subgrid dynamo prescription to generate strong
initial magnetic fields, we investigate the possibility of launching a jet-like outflow from the …

The most promising indirect search for the existence of axion dark matter uses radio
telescopes to look for narrow spectral lines generated from the resonant conversion of …

We study the long-term evolution of ejecta formed in a binary neutron star (NS) merger that
results in a long-lived remnant NS by performing a hydrodynamics simulation with the …

The coalescence of two neutron stars is accompanied by the emission of gravitational
waves, and can also feature electromagnetic counterparts powered by mass ejecta and the …

During the final stages of a compact object merger, if at least one of the binary components
is a magnetized neutron star (NS), then its orbital motion substantially expands the NS's …

The detection of gravitational waves from neutron star merger events has opened up a new
field of multimessenger astronomy linking gravitational-wave events to short gamma-ray …

We derive the upper limit to the ejecta mass of S190814bv, a black hole–neutron star (BH–
NS) merger candidate, through radiative transfer simulations for kilonovae with realistic …

It is an open question whether and how gravitational wave events involving neutron stars
can be preceded by electromagnetic counterparts. This Letter shows that the collision of two …