Compton scattering effects observed in Sco X-1 and similar sources
Open Access
- 1 October 1979
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 188 (3) , 555-563
- https://doi.org/10.1093/mnras/188.3.555
Abstract
Comptonized thermal bremsstrahlung spectra have been fitted to data from Sco X-1, 4U 1702 – 36 (Sco X-2), 4U 1813 – 14 (GX 17 + 2) and 4U 1728 – 16 (GX 9 + 9). These spectral forms result in improved values of χ2 and give lower values of temperature when compared with pure bremsstrahlung spectra. We find an electron temperature for Sco X-1 of 2.4 keV (2.8 × 107 K). There is no evidence for the correlation of temperature with intensity, which has been reported by previous authors. Instead, we observe that the optical depth and intensity of Sco X-1 are correlated.Keywords
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