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 …

We present results of an all-sky search for continuous gravitational waves (CWs), which can
be produced by fast spinning neutron stars with an asymmetry around their rotation axis …

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 …

There have been several previous searches for persistent (or continuous) quasi-
monochromatic gravitational waves emitted by a selection of known pulsars using data from …

Gravitational wave astronomy opened dramatically in September 2015 with the LIGO
discovery of a distant and massive binary black hole coalescence. The more recent …

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 …

Einstein's special theory of relativity revolutionized physics by teaching us that space and
time are not separate entities, but join as' spacetime'. His general theory of relativity further …

Model waveforms are used in gravitational wave data analysis to detect and then to
measure the properties of a source by matching the model waveforms to the signal from a …

Significant progress has been made in recent years on the development of gravitational-
wave detectors. Sources such as coalescing compact binary systems, neutron stars in low …

Gravitational waves astronomy allows us to study objects and events invisible in
electromagnetic waves. It is crucial to validate the theories and models of the most …