The determination of time lags using SOLA

Details The determination of time lags using SOLA The determination of time lags using SOLA

1996-07-17

arxiv.org/abs/astro-ph/9607082v1

Astronomy and Astrophysics

Astrophysics

13 pages, including figures, uses epsf.tex and mn.tex submitted to MNRAS

Scientific paper

A common problem in astronomy is the determination of the time shift between two otherwise identical time series of measured flux from a variable source, in short the determination of a time lag. Two examples of where this problem occurs are in the determination of the Hubble constant from multiple images of gravitationally lensed variable quasars and also in the determination of distances to OH/IR stars. It is shown here that this problem can be seen as a restricted inversion problem. It therefore can be solved using the subtractive optimally localized averages (SOLA) method for inversion which has been described elsewhere (Pijpers & Thompson 1992, 1994 ; Pijpers & Wanders 1994).

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