Distance indicator · Geometric rung
Standard Sirens
Gravitational-wave sources whose distance can be read directly from the shape of the waveform, with no calibration ladder at all — the gravitational analogue of a standard candle. A merging neutron-star pair with an electromagnetic counterpart yielded the first standard-siren measurement of the Hubble constant.
Highlights
- ›A distance straight from the gravitational waveform
Methods, objects & facilities
Knowledge connections
- Associated withGravitational-Wave Detection
- Associated withKilonova
- Associated withThe Hubble Constant
- Associated withParameter Estimation
Sources
The primary and reference sources this topic draws on.
- LIGO Scientific CollaborationLIGO Scientific Collaboration & Virgo Collaboration
Direct detections of gravitational waves from compact-object mergers.