Centaurus X-3


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Centaurus X-3

An X-ray binary, the first of its type, discovered by the Uhuru satellite in 1971. The binary nature was determined from the observation of regular X-ray eclipses with a period of 2.09 days; in 1974 the optical companion star was identified as a 13th magnitude supergiant of spectral type O6.5, establishing Centaurus X-3 as a high-mass X-ray binary, or HMXB. Rapid pulsation of the X-ray source at a 4.8 second period is associated with the rotation of a magnetized neutron star. It may thus be regarded as an X-ray pulsar.

Centaurus X-3

[sen′tȯr·əs ‚eks ′thrē]
(astrophysics)
A source of x-rays that pulses with a period of 4.8 seconds and is eclipsed every 2.1 days; believed to be a binary star, one of whose members is a rotating neutron star. Abbreviated Cen X-3.
References in periodicals archive ?
New elements for three eclipsing X-Ray binary systems: HZ Herculis, Centaurus X-3 and VELA X-1.
New physical and geometrical elements of the X-ray eclipsing binary system Centaurus X-3 (Krzemenski's star) were found.
Specifications of the system Centaurus X-3 (Krzemenski's star):
Discovery of Periodic X-Ray Pulsations in Centaurus X-3 from HURU.
The identification and UBV photometry of the visible component of the Centaurus X-3 binary system.
Photoelectric observations of Krzeminski's star, the companion of Centaurus X-3.
Evidence for the Binary Nature of Centaurus X-3 from UHURU X-Ray Observations.
05 (Al-Wardat et al, Absorption and 1998) Re-emission Optical to X-Ray Lopt/Lx = 100 [+ or -] 5 (Al-Wardat et al, Luminosity Ratio 1998) Effective Teff = 38000 (Al-Wardat et al, Temperature of The K [+ or -] 1000 1998) Optical Star Table 2: New elements of Centaurus X-3 Mass Ratio of The System q = 0.
The present study focuses on the analysis of one such binary, Centaurus X-3, in a step to derive more reliable physical and geometrical elements.
Lamb of Iowa State University in Ames, radiation into the peta-electron-volt or 1,000-TeV range has recently been detected from the Vela pulsar, LMC X-4 and Centaurus X-3.