Abstract
The study of rapid, small amplitude stellar variability is handicapped by scintillation and photon noise. Flickering on time scales corresponding to bandwidths B ≳ 0.1 Hz may be expected of a variety of irregular variables including dwarf novae and X-ray binaries. Stochastic variability is harder to detect than periodic variability because its spectrum is likely to be a continuum, not necessarily distinguishable from the spectrum of the noise due to scintillation, extinction variations, sky radiance variations and photon statistics. The proposed correlation technique provides a means whereby systematic errors may be largely eliminated and the full statistical threshold limit achieved. Simultaneous observations of a suspected variable by an array of two telescopes separated by a base line exceeding the noise correlation distance are proposed.
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© 1977 D. Reidel Publishing Company, Dordrecht, Holland
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Edwards, P.J., Hurst, R.B., Thomas, M. (1977). Cross Correlation Detection of Rapid Stellar Variability Using Two Telescopes. In: Friedjung, M. (eds) Novae and Related Stars. Astrophysics and Space Science Library, vol 65. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-1217-1_7
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DOI: https://doi.org/10.1007/978-94-010-1217-1_7
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-1219-5
Online ISBN: 978-94-010-1217-1
eBook Packages: Springer Book Archive