A visual band light curve for Aquila X-1 during a July 1996 outburst, adapted from Garcia et al. (1999)[1] | |
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Aquila |
Right ascension | 19h 11m 16.05720s[2] |
Declination | +00° 35′ 05.8767″[2] |
Characteristics | |
Spectral type | K4[3] |
Variable type | LMXB[4] |
Other designations | |
Database references | |
SIMBAD | data |
Aquila X-1 (frequently abbreviated to Aql X-1) is a low-mass x-ray binary (LMXB) and the most luminous X-Ray source in the constellation Aquila. It was first observed by the satellite Vela 5B which detected several outbursts from this source between 1969 and 1976.[4] Its optical counterpart is variable, so it was named V1333 Aql according to the IAU standards. The system hosts a neutron star that accretes matter from a main sequence star of spectral type K4.[3] The binary's orbital period is 18.9479 hours.[1]
The neutron star radiation flux is slightly variable due to the nuclear burning of the accreted helium on the surface.[6]
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