Abstract The German–British laser-interferometric gravitational wave detector GEO 600 is in
its 14th year of operation since its first lock in 2001. After GEO 600 participated in science …

Spacetime is foliated by spatial hypersurfaces in the 3+ 1 split of general relativity. The initial
value problem then consists of specifying initial data for all fields on one such a spatial …

We present the results of a weakly modeled burst search for gravitational waves from
mergers of nonspinning intermediate mass black holes in the total mass range 100–450 M⊙ …

The two 4 km long gravitational wave detectors operated by the Laser Interferometer
Gravitational-wave Observatory (LIGO) were modified in 2008 to read out the gravitational …

Abstract The German/British gravitational wave detector GEO 600 is in the process of being
upgraded. The upgrading process of GEO 600, called GEO-HF, will concentrate on the …

We study the prospects for using interferometers in gravitational-wave detectors as tools to
search for photon-sector violations of Lorentz symmetry. Existing interferometers are shown …

We propose a novel type of gravitational-wave antenna, formed by two bar-shaped test
masses and laser-interferometric sensors to monitor their differential angular fluctuations …

In general neutron stars in binaries are spinning. Recently, a new quasi-equilibrium
approximation that includes a rotational velocity piece for each star has been proposed to …

In general neutron stars in binaries are spinning. Because of the existence of millisecond
pulsars we know that these spins can be substantial. We argue that spins with periods on …

We present a new numerical method for the generation of binary neutron star initial data
using a method along the lines of the Wilson–Mathews or the closely related conformal thin …