A 2 component X-ray spectrum from SMC X-1
Abstract
Both HEAO-1 A2 and Einstein 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 power sq cm to 10 to the 17th power sq cm. The hard X-ray component is pulsed; the phase averaged spectrum is a power law with alpha approximately 0.5 keV up to 17 keV above which it steepens. The SSS sets an upper limit of 4 x 10 to the 21st power H cm/2 to any absorption and is consistent with that expected from the wind of SK160. 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 SK160.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- September 1982
- Bibcode:
- 1982STIN...8315235M
- Keywords:
-
- Brightness Temperature;
- Eclipsing Binary Stars;
- Stellar Luminosity;
- Stellar Spectra;
- Supergiant Stars;
- X Ray Spectra;
- Black Body Radiation;
- Emission Spectra;
- Heao 1;
- Heao 2;
- Photoabsorption;
- Stellar Winds;
- Astronomy