The high-energy X-ray spectrum of Centaurus XR-3 observed from OSO 8

Details The high-energy X-ray spectrum of Centaurus XR-3 observed from OSO 8 The high-energy X-ray spectrum of Centaurus XR-3 observed from OSO 8

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...278..266d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 278, March 1, 1984, p. 266-269.

Astronomy and Astrophysics

Astrophysics

3

Binary Stars, Energy Spectra, Stellar Spectra, X Ray Sources, Roche Limit, Satellite-Borne Instruments, Stellar Winds, X Ray Spectra

Scientific paper

Observations of the X-ray binary Cen XR-3 in the 20-120 keV energy range by means of OSO 8's high energy X-ray spectrometer, during July 16-19, 1975, and July 5-14 and 28-29, 1978, indicate that the source was in a high luminosity state during 1975 and a low luminosity one in 1978. While mean orbital light curves appear similar in shape in both years, orbit-to-orbit intensity variations are noted. Spectral, luminosity, and the 4.84 sec modulation are characterized. Cen XR-3 may be a system in which mass transfer by Roche lobe overflow, and by accretion from a stellar wind, are both effective in the production of observable X-ray radiation.

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