  The field of gravitational-wave astronomy has been opened up by
gravitational-wave observations made with interferometric detectors. This
review surveys the current state-of-the-art in gravitational-wave detectors and
data analysis methods currently used by the Laser Interferometer
Gravitational-Wave Observatory in the United States and the Virgo Observatory
in Italy. These analysis methods will also be used in the recently completed
KAGRA Observatory in Japan. Data analysis algorithms are developed to target
one of four classes of gravitational waves. Short duration, transient sources
include compact binary coalescences, and burst sources originating from poorly
modelled or unanticipated sources. Long duration sources include sources which
emit continuous signals of consistent frequency, and many unresolved sources
forming a stochastic background. A description of potential sources and the
search for gravitational waves from each of these classes are detailed.
