On September 14 2015, the two LIGO gravitational wave detectors in Hanford, Washington and Livingston, Louisiana registered a nearly simultaneous signal with time-frequency properties consistent with gravitational-wave emission by the merger of... two massive compact objects. Further analysis of the signals by the LIGO Scientific Collaboration and the Virgo Collaboration revealed that the gravitational waves detected by LIGO came from the merger of a binary black hole (BBH) system. This observation, followed by another one in December 2015, marked the beginning of gravitational wave astronomy. I will describe some details of the observation, the status of LIGO and Virgo ground-based interferometric detectors, and prospects for future observations.
Colloquium: Searching for -- and Finding! Gravitational Waves
Gabriela Gonzalez, Professor of Physics and Astronomy, Spokesperson for the LIGO Collaboration, Louisiana State University
November 16, 2016 - 4:00pm
Crow Hall, Room 204 - Coffee will be served at 3:30 in Compton Hall, Room 241