GW170817
E734728
GW170817 is the first observed gravitational-wave signal from a binary neutron star merger, famously accompanied by electromagnetic counterparts across the spectrum.
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical event
ⓘ
binary neutron star merger ⓘ gravitational-wave event ⓘ |
| announcementDate | 2017-10-16 ⓘ |
| binaryComponentType | neutron star ⓘ |
| componentMassRange | about 1.1 to 1.6 solar masses ⓘ |
| detectedBy |
LIGO
NERFINISHED
ⓘ
Virgo NERFINISHED ⓘ |
| distanceFromEarth |
about 130 million light-years
ⓘ
about 40 megaparsecs ⓘ |
| enabledMeasurement | Hubble constant ⓘ |
| eventDate | 2017-08-17 ⓘ |
| gravitationalWaveFrequencyRange | about 30 to 3000 hertz ⓘ |
| hasDiscoveryMethod |
electromagnetic observation
ⓘ
gravitational-wave detection ⓘ |
| hasElectromagneticCounterpart |
AT 2017gfo
NERFINISHED
ⓘ
GRB 170817A NERFINISHED ⓘ X-ray afterglow ⓘ infrared transient ⓘ kilonova ⓘ optical transient ⓘ radio afterglow ⓘ short gamma-ray burst ⓘ |
| hasHostGalaxy | NGC 4993 NERFINISHED ⓘ |
| hasSignificance |
first gravitational-wave detection from a binary neutron star merger
ⓘ
first multi-messenger observation combining gravitational waves and light from the same source ⓘ |
| hostGalaxyConstellation | Hydra NERFINISHED ⓘ |
| hostGalaxyType | lenticular galaxy ⓘ |
| numberOfComponents | 2 ⓘ |
| observedBy |
Chandra X-ray Observatory
NERFINISHED
ⓘ
Fermi Gamma-ray Space Telescope NERFINISHED ⓘ Hubble Space Telescope NERFINISHED ⓘ INTEGRAL NERFINISHED ⓘ many ground-based telescopes worldwide ⓘ |
| observedIn |
X-rays
ⓘ
gamma rays ⓘ gravitational waves ⓘ infrared ⓘ optical ⓘ radio ⓘ ultraviolet ⓘ |
| produced |
gold
ⓘ
platinum ⓘ r-process heavy elements ⓘ |
| providedEvidenceFor |
kilonova emission from r-process nucleosynthesis
ⓘ
origin of short gamma-ray bursts in binary neutron star mergers ⓘ |
| signalDuration | about 100 seconds ⓘ |
| tested | general relativity NERFINISHED ⓘ |
| totalMass | about 2.7 solar masses ⓘ |
| usedAs | standard siren ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.