Scorpius X-1
E472725
Scorpius X-1 is a bright low-mass X-ray binary system and one of the strongest persistent X-ray sources in the sky, located in the constellation Scorpius.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
X-ray source
ⓘ
astronomical object ⓘ low-mass X-ray binary ⓘ |
| accretionDisk | present ⓘ |
| apparentMagnitudeV | about 12.3 ⓘ |
| belongsToClass | Z-source LMXB ⓘ |
| catalogDesignation |
4U 1617−15
NERFINISHED
ⓘ
GX 348+16 NERFINISHED ⓘ Sco X-1 NERFINISHED ⓘ |
| compactObject | neutron star ⓘ |
| compactObjectMass | about 1.4 solar masses ⓘ |
| constellation | Scorpius NERFINISHED ⓘ |
| declination | −15° 38′ 25″ ⓘ |
| discoveredBy |
Bruno Rossi
NERFINISHED
ⓘ
Frank R. Paolini NERFINISHED ⓘ Herbert Gursky NERFINISHED ⓘ Riccardo Giacconi NERFINISHED ⓘ |
| discoveryMethod | sounding rocket X-ray experiment ⓘ |
| discoveryYear | 1962 ⓘ |
| distanceFromEarth |
about 2.8 kiloparsecs
ⓘ
about 9,000 light-years ⓘ |
| emissionMechanism | accretion onto neutron star ⓘ |
| GalacticLatitude | +23.18° ⓘ |
| GalacticLongitude | 359.09° ⓘ |
| GalacticPopulation | Galactic halo object ⓘ |
| hostGalaxy | Milky Way NERFINISHED ⓘ |
| locatedInConstellation | Scorpius NERFINISHED ⓘ |
| massTransferMechanism | Roche lobe overflow ⓘ |
| notableAs |
brightest persistent extrasolar X-ray source in the sky
ⓘ
first extrasolar X-ray source discovered ⓘ |
| opticalCompanionMass | about 0.4 solar masses ⓘ |
| opticalCounterpartDesignation | V818 Scorpii NERFINISHED ⓘ |
| opticalVariability | present ⓘ |
| orbitalPeriod |
0.787 days
ⓘ
about 18.9 hours ⓘ |
| properMotion | high ⓘ |
| radialVelocity | large ⓘ |
| radioEmission | detected ⓘ |
| radioJets | present ⓘ |
| rightAscension | 16h 19m 55.1s ⓘ |
| spectralTypeOpticalCompanion | K-type subgiant ⓘ |
| systemType | low-mass X-ray binary (LMXB) ⓘ |
| usedFor |
studies of accretion physics
ⓘ
tests of general relativity in strong gravity regime ⓘ |
| variabilityType | X-ray variable source ⓘ |
| XrayBand |
hard X-rays
ⓘ
soft X-rays ⓘ |
| XrayLuminosity |
about 2×10^38 erg/s
ⓘ
of order Eddington luminosity for a neutron star ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.