• Thumbnail for GW170817
    GW170817 was a gravitational wave (GW) signal observed by the LIGO and Virgo detectors on 17 August 2017, originating from the shell elliptical galaxy...
    100 KB (5,734 words) - 22:19, 13 July 2024
  • Thumbnail for Neutron star merger
    after multi-messenger event GW170817 was observed in 2017. On 17 August 2017, the LIGO and Virgo interferometers observed GW170817, a gravitational wave associated...
    22 KB (2,325 words) - 01:24, 11 July 2024
  • as predicted by general relativity and confirmed by observation of the GW170817 neutron star merger, is equal to the speed of light (c). The speed of gravitational...
    45 KB (5,578 words) - 08:50, 22 June 2024
  • Thumbnail for Kilonova
    collaborations announced the first simultaneous detections of gravitational waves (GW170817) and electromagnetic radiation (GRB 170817A and AT 2017gfo) and demonstrated...
    22 KB (2,193 words) - 13:01, 25 May 2024
  • gravitational wave observations from binary neutron star mergers (like GW170817) and the subsequent information from electromagnetic radiation (kilonova)...
    12 KB (2,080 words) - 08:10, 8 July 2024
  • Thumbnail for Neutron star
    gamma-ray bursts. In 2017, the LIGO and Virgo interferometer sites observed GW170817, the first direct detection of gravitational waves from such an event....
    113 KB (13,699 words) - 23:48, 12 July 2024
  • observations of gravitational waves emitted by the neutron-star merger GW170817 contravene predictions made by this model of gravity. Some have revised...
    5 KB (592 words) - 01:28, 25 May 2024
  • Thumbnail for Gravity
    (LIGO Scientific Collaboration & Virgo Collaboration) (October 2017). "GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral"...
    73 KB (7,516 words) - 21:55, 23 June 2024
  • Thumbnail for Virgo interferometer
    in 2017 (jointly with the two LIGO detectors), quickly followed by the GW170817 event, the only one to have also been observed with classical methods (optical...
    90 KB (9,962 words) - 18:36, 2 July 2024
  • Thumbnail for Hydra (constellation)
    galaxy is NGC 4993, an elliptical galaxy which was the source of events GW170817, GRB 170817A and SSS17a from the merger of two neutron stars. The Sigma...
    17 KB (1,866 words) - 17:27, 25 March 2024