Description
Recent observations of gravitational waves (GWs) have opened up a new branch of astronomy. During their first three observing runs, LIGO and Virgo observed around a hundred compact binary mergers involving black holes and neutron stars. Recently, pulsar timing arrays also obtained evidence of a nano-Hz gravitational-wave background. As the sensitivity of the GW detectors improves and new detectors join the network, we will detect new sources and phenomena. There is also an ongoing international effort to expand the frequency band of GW observations and to build the next-generation detectors. This talk will summarise the current results from GW observations and future expectations.
