Now that detection of gravitational-wave signals from the coalescence of extra-galactic
compact binary star mergers has become nearly routine, it is intriguing to consider other …

Gravitational wave science should transform in this decade from a study of what has not
been seen to a full-fledged field of astronomy in which detected signals reveal the nature of …

Seven years after the first direct detection of gravitational waves, from the collision of two
black holes, the field of gravitational wave astronomy is firmly established. A first detection of …

We report on an all-sky search for continuous gravitational waves in the frequency band 20–
2000 Hz and with a frequency time derivative in the range of [-1.0,+ 0.1]× 10-8 Hz/s. Such a …

Non-axisymmetrical deformations of the crust on rapidly rotating neutron stars are one of the
main targets of searches for continuous gravitational waves. The maximum ellipticity, or …

The next galactic core-collapse supernova (CCSN) has already exploded, and its
electromagnetic (EM) waves, neutrinos, and gravitational waves (GWs) may arrive at any …

Pulsars are spinning, magnetized neutron stars with slowly decreasing rotation rates. In the
model of a triaxial ellipsoid star, a deformation (possibly from shear strains in the solid part …

As the era of gravitational-wave astronomy has well and truly begun, gravitational radiation
from rotating neutron stars remains elusive. Rapidly spinning neutron stars are the main …

Rapidly spinning, deformed neutron stars have long been considered potential gravitational-
wave emitters. However, so far only upper limits on the size of the involved quadrupole …

Gravitational wave searches for continuous-wave signals from neutron stars are especially
challenging when the star's spin frequency is unknown a priori from electromagnetic …