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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., 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. doi:10.1016/j.asr.2005.10.056 ISSN 0273-1177.

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Official URL: http://dx.doi.org/10.1016/j.asr.2005.10.056

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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, Engineering and Medicine > 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
Official Date: 2006
Dates:
DateEvent
2006Published
Volume: No.38
Number: Vol.12
Number of Pages: 3
Page Range: pp. 2762-2764
DOI: 10.1016/j.asr.2005.10.056
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 15 December 2015
Date of first compliant Open Access: 15 December 2015

Data sourced from Thomson Reuters' Web of Knowledge

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