ASTROPHYSICS AND SPACE SCIENCE, vol.296, pp.209-220, 2005 (SCI-Expanded)
An analytically tractable method of transforming the problem of light curve analysis of eclipsing binaries from the time domain into the frequency domain was introduced by Kopal (1975, 1979, 1990). This method uses a new general formulation of eclipse functions alpha, the so-called moments A(2m), and their combinations as g(2m) = A(2m+2)/(A(2m)A(2m+4)) functions for the basic spherical model. In this paper, I will review the use of these functions in the light curve analysis of eclipsing binaries.