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Echo tomography of Sco X-1 using Bowen fluorescence lines

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Casares, J., Muñoz-Darias, T., Martinez-Pais, I. G., Cornelisse, R., Charles, P. A., Marsh, T. R., Dhillon, V. S. and Steeghs, D. (Danny), 1972- (2005) Echo tomography of Sco X-1 using Bowen fluorescence lines. In: Interacting binaries, Cefalu, Sicily, 4-10 Jul 2004. Published in: AIP Conference Proceedings, Vol.797 pp. 365-370.

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Abstract

We present preliminary results of a simultaneous X‐ray/optical campaign of the proto‐typical LMXB Sco X‐1 at 1–10 Hz time resolution. Lightcurves of the high excitation Bowen/HeII emission lines were obtained through narrow interference filters with ULTRACAM, and these were cross‐correlated with X‐ray lightcurves. We find evidence for correlated variability, in particular when Sco X‐1 enters the Flaring Branch. The Bowen/HeII lightcurves lag the X‐ray lightcurves with a light travel time which is consistent with reprocessing in the companion star.

Item Type: Conference Item (Paper)
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): X-ray binaries, Neutron stars
Journal or Publication Title: AIP Conference Proceedings
Publisher: American Institute of Physics
ISSN: 0094-243X
Book Title: AIP Conference Proceedings
Official Date: 2005
Volume: Vol.797
Page Range: pp. 365-370
Identification Number: 10.1063/1.2130255
Status: Peer Reviewed
Publication Status: Published
Funder: Spain. Ministerio de Ciencia y Tecnología (MCT)
Conference Paper Type: Paper
Title of Event: Interacting binaries
Type of Event: Conference
Location of Event: Cefalu, Sicily
Date(s) of Event: 4-10 Jul 2004
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URI: http://wrap.warwick.ac.uk/id/eprint/50077

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