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Multiband echo tomography of Sco X-1
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Muñoz-Darias, T., Martínez-Paris, I. G., Casares, J., Marsh, T. R., Cornelisse, R., Steeghs, D. (Danny), 1972-, Dhillon, V. S. and Charles, P. A.. (2006) Multiband echo tomography of Sco X-1. Advances in space research, No.38 (Vol.12). pp. 2762-2764. ISSN 0273-1177
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Official URL: http://dx.doi.org/10.1016/j.asr.2005.10.056
Abstract
We present preliminary results of a simultaneous X-ray/optical campaign of the prototypical LMXB Sco X-1 at 1-10 Hz time resolution. Lightcurves of the high excitation Bowen/Hell emission lines and a red continuum at lambda(c) similar to 6000 angstrom were obtained through narrow interference filters with ULTRACAM, and these were cross-correlated with simultaneous RXTE X-ray lightcurves. We find evidence for correlated variability, in particular when Sco X-1 enters the Flaring branch. The Bowen/Hell lightcurves lag the X-ray lightcurves with a light travel time which is consistent with reprocessing in the companion star while the continuum lightcurves have shorter delays consistent with reprocessing in the accretion disc.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QB Astronomy |
| Divisions: | Faculty of Science > Physics |
| Library of Congress Subject Headings (LCSH): | Double stars |
| Journal or Publication Title: | Advances in space research |
| Publisher: | Elsevier Science BV |
| ISSN: | 0273-1177 |
| Date: | 2006 |
| Volume: | No.38 |
| Number: | Vol.12 |
| Number of Pages: | 3 |
| Page Range: | pp. 2762-2764 |
| Identification Number: | 10.1016/j.asr.2005.10.056 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| References: | [1] Casares J., Charles P.A. & Kuulkers E. 1998, ApJ, 493, L39. [2] Dhillon V.S. & Marsh T.R. 2001, NewA Rev., 45(1-2), 91. [3] Munoz-Darias T., Martınez-Pais I.G. & Casares J. 2005, in INTERACTING BINARIES: Accretion, Evolution and Outcomes, eds. L.A. Antonelli et al. [4] O’Brien K., Horne K., Hynes R.I., Chen W., Haswell C.A. & Still M.D. 2002, MNRAS, 334, 426. [5] Steeghs D. & Casares J. 2002, ApJ, 568, 273. |
| URI: | http://wrap.warwick.ac.uk/id/eprint/32620 |
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