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Echo Tomography of Sco X-1 using Bowen Fluorescence Lines | | J. Casares
; T. Mu~{n}oz-Darias
; I.G. Martinez-Pais
; R. Cornelisse
; P.A. Charles
; T.R. Marsh
; V.S. Dhillon
; D. Steeghs
; | | Date: |
3 Mar 2005 | | Subject: | astro-ph | | Affiliation: | 2,3), T.R. Marsh , V.S. Dhillon , D. Steeghs ( Instituto de Astrofisica de Canarias, Univ. of Southampton, SAAO, Univ. of Warwick, Univ. of Sheffield, Harvard-Smithsonian Center for Astrophysics | | 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/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. | | Source: | arXiv, astro-ph/0503073 | | Services: | Forum | Review | PDF | Favorites | |
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