Fitting Blazhko light curves

Authors


E-mail: jurcsik@konkoly.hu

ABSTRACT

The correct amplitude and phase modulation formalism of the Blazhko modulation is given. The harmonic order dependent amplitude and phase modulation form is equivalent to the Fourier decomposition of multiplets. The amplitude and phase modulation formalism used in electronic transmission technique as introduced by Benkő, Szabó & Paparó for Blazhko stars oversimplifies the amplitude and phase modulation functions; thus, it does not describe the light variation in full detail.

The results of the different formalisms are compared and documented by fitting the light curve of a real Blazhko star, CM UMa.

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