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Observational manifestations of the change in the tilt of the accretion disk to the orbital plane in her X-1/HZ her with phase of its 35-day period
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Klochkov, D. K., Shakura, N. I., Postnov, K. A., Staubert, R., Wilms, J. and Ketsaris, N. A.. (2006) Observational manifestations of the change in the tilt of the accretion disk to the orbital plane in her X-1/HZ her with phase of its 35-day period. ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 32 (12). pp. 804-815. ISSN 1063-7737
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Official URL: http://dx.doi.org/10.1134/S1063773706120024
Abstract
We analyze and interpret the RXTE/ASM X-ray light curves for the close binary system Her X-1/HZ Her obtained from February 1996 to September 2004. Some of the features found previously in the averaged X-ray light curves are confirmed by the new RXTE/ASM data. In particular, the anomalous dips and post-eclipse recoveries in two successive orbits in the short-on state are clearly distinguishable and are stable features of the X-ray light curves. We argue that to account for these features, the tilt of the accretion disk to the orbital plane must be assumed to change with phase of the 35-day period. We present a numerical model that can reproduce the observed features of the light curves.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QB Astronomy |
| Journal or Publication Title: | ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS |
| Publisher: | MAIK NAUKA/INTERPERIODICA/SPRINGER |
| ISSN: | 1063-7737 |
| Date: | December 2006 |
| Volume: | 32 |
| Number: | 12 |
| Number of Pages: | 12 |
| Page Range: | pp. 804-815 |
| Identification Number: | 10.1134/S1063773706120024 |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/32718 |
Data sourced from Thomson Reuters' Web of Knowledge
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