Damle, S. V. ; Kunte, P. K. ; Leahy, D. A. ; Naranan, S. ; Sreekantan, B. V. ; Venkatesan, D. (1988) High energy X-ray timing and spectral observations of SCO X-1, CYG X-1, GX 5-1, CYG X-3 and GX 1+4 Advances in Space Research, 8 (2-3). pp. 415-419. ISSN 0273-1177
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0273-1177(88)90439-5
Abstract
A high energy X-ray astronomy payload with phoswich scintillation detectors was flown from Hyderabad, India on December 18, 1984. Five galactic X-ray sources, Sco X-1, Cyg X-1, Gx 5-1, Cyg X-3 and GX I+4 were observed. The timing data, with a high time resolution of 40 µs, were analysed for periodicities and quasi-periodic oscillations (QPO's). GX 1+4 was in a low luminosity state and showed pulsations with a period of 95.9 s. Its period derivative was calculated. Sco X-1 was found not to exhibit QPO's in 18-40 keV X-rays with a 90% confidence limit of 0.20 on amplitude. Spectra are presented for Sco X-1, Cyg X-1 and GX 5-1.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 50015 |
| Deposited On: | 21 Jul 2011 09:02 |
| Last Modified: | 21 Jul 2011 09:02 |
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