A two-component X-ray spectrum from SMC X-1

Details A two-component X-ray spectrum from SMC X-1 A two-component X-ray spectrum from SMC X-1

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...266..814m&link_type=abstract

Astrophysical Journal, Part 1, vol. 266, Mar. 15, 1983, p. 814-822.

Astronomy and Astrophysics

Astrophysics

26

Eclipsing Binary Stars, Magellanic Clouds, Pulsars, Stellar Spectrophotometry, X Ray Spectra, Absorption Spectra, Black Body Radiation, Emission Spectra, Energy Spectra, Heao 1, Heao 2, Radiant Flux Density, Solid State Devices, Stellar Temperature, Stellar Winds

Scientific paper

HEAO 1 A-2 and Einstein Solid State Spectrometer (SSS) observations of SMC X-1 are presented. An unpulsed soft component is found with a blackbody temperature of 0.16 keV and an area for the emission region of 10 to the 15th to 10 to the 17th sq cm. The hard X-ray component is pulsed; the phase-averaged spectrum is a power law with alpha of about 0.5 up to 17 keV, above which it steepens. The SSS sets an upper limit of less than 4 x 10 to the 21st H/sq cm to any absorption, and is consistent with that expected from the wind of Sk 160. Absorption dips with a timescale of several hundred seconds are seen immediately following an eclipse exit, and are probably caused by inhomogeneities in the wind of Sk 160.

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