The strong magnetic field of neutron stars is intimately coupled to the observed temperature
and spectral properties, as well as to the observed timing properties (distribution of spin …

Many evolution problems in physics are described by partial differential equations on an
infinite domain; therefore, one is interested in the solutions to such problems for a given …

Axions are some of the best motivated particles beyond the Standard Model. We show how
the attractive self-interactions of dark matter (DM) axions over a broad range of masses, from …

The majority of extensions to general relativity (GR) display mathematical pathologies—
higher derivatives, character change in equations that can be classified within partial …

Gravitational-wave observations of black hole ringdowns are commonly used to characterize
binary merger remnants and to test general relativity. These analyses assume linear black …

Solitonic boson stars are stable objects made of a complex scalar field with a compactness
that can reach values comparable to that of neutron stars. A recent study of the collision of …

We study the merger of binary neutron stars using different realistic, microphysical nuclear
equations of state, as well as incorporating magnetic field and neutrino cooling effects. In …

A new numerical scheme to solve the Einstein field equations based upon the generalized
harmonic decomposition of the Ricci tensor is introduced. The source functions driving the …

One of the major obstacles to testing alternative theories of gravity with gravitational-wave
data from merging binaries of compact objects is the formulation of their field equations …

The coalescence of supermassive black holes—a natural outcome when galaxies merge—
should produce gravitational waves and would likely be associated with energetic …