Fitting Blazhko light curves

B. Szeidl, J. Jurcsik, Á Sódor, G. Hajdu, P. Smitola

Research output: Contribution to journalArticle

6 Citations (Scopus)


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 Benko, 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.

Original languageEnglish
Pages (from-to)3094-3100
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Publication statusPublished - Aug 21 2012



  • Methods: data analysis
  • Stars: horizontal branch
  • Stars: individual: CM UMa
  • Stars: oscillations
  • Stars: variables: RR Lyrae
  • Techniques: photometric

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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