Status of LIGO: Past, Present and Future

山本　博章（Hiroaki YAMAMOTO）
California Institute of Technology LIGO laboratory

After one hundred years since the prediction of the gravitational wave in the theory of general relativity by A. Einstein, the tiny ripple of the space was finally detected by LIGO, Laser Interferometer Gravitational-Wave Observatory, in US, on September 14, 2015, which was radiated by a merger of black holes. The GW signal from a merger of binary neutron starts was detected on August 17, 2017, together with very interesting EM signals by many EM observatories.
After spending a year and half to improve the sensitivity, a new observation run started on April 1, 2019. With the improved sensitivity, GW signals are detected almost one per week, and one signal candidate from a neutron star merger and one from a neutron start - black hole merger have been detected in two months' run.
This talk will cover continuous effects toward the discovery of the GW signals in LIGO and a future plan to make GW signals by ground-based interferometers to probe the astronomy and cosmology.

Place: A 2F Conf. hall（1236） / A棟２階会議場（1236号室）
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