When a numerical simulation has to handle a physics problem with a wide range of time-
dependent length scales, dynamically adaptive discretizations can be the method of choice …

As a first application of the new adaptive mesh functionality of the pseudospectral numerical
relativity code bamps, we evolve twist-free, axisymmetric gravitational waves close to the …

The good-bad-ugly-F model is a system of semilinear wave equations that mimics the
asymptotic form of the Einstein field equations in generalized harmonic gauge with specific …

We report on numerical simulations of critical phenomena near the threshold of black-hole
formation in the collapse of axisymmetric gravitational waves in vacuum. We discuss several …

We report on a numerical study of gravitational waves undergoing gravitational collapse due
to their self-interaction. We consider several families of asymptotically flat initial data which …

It has been three decades since the ground-breaking work by Choptuik on critical
phenomena in gravitational collapse involving a real massless scalar field minimally …

Binary black holes are the most abundant source of gravitational-wave observations.
Gravitational-wave observatories in the next decade will require tremendous increases in …

We report on critical phenomena in the gravitational collapse of electromagnetic waves.
Generalizing earlier results that focused on dipole electromagnetic waves, we compare here …

Motivated by studies of critical phenomena in the gravitational collapse of vacuum
gravitational waves we compare, at the linear level, two common approaches to constructing …

The Good-Bad-Ugly-F model is a system of semi-linear wave equations that mimics the
asymptotic form of the Einstein field equations in generalized harmonic gauge with specific …