Accretion Disk Structure in Lmxbs: Multiwavelength Observations of SCO X-1
Abstract
Sco X-1 is the archetypal LMXB. It has a strong, variable UV emission lines. X-ray heating of the disk is a compelling source for the lines, but photoionziation models have been unable to match observed line fluxes and the expected correlation between X-ray and UV line fluxes has not been observed. We propose coordinated X-ray (RXTE/PCA), FUV (FUSE), and optical (ground-based) observations of Sco X-1 over a full orbital cycle (70 ksec) to study the structure of the accretion disk chromosphere and to probe the effects of X-ray photoionization and viscous heating by the disk on the line emission region. We will conduct high time resolution studies of correlations between X-ray fluxes and FUV and optical spectra.
- Publication:
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RXTE Proposal
- Pub Date:
- 2005
- Bibcode:
- 2005rxte.prop91012F