Volume 381, Number 1, JanuaryI 2002
|Page(s)||1 - 5|
|Section||Cosmology (including clusters of galaxies)|
|Published online||15 January 2002|
Optical periodicity analysis for radio selected BL Lacertae objects (RBLs)*
National Astronomical Observatory, Chinese Academy of Sciences, Beijing, PR China
2 Center for Astrophysics, Guangzhou University, Guangzhou 510400, PR China
3 Department of Physics, Yunnan University, Kunming, PR China
4 Yunnan Observatory, Chinese Academy of Science, Kunming 650011, PR China
5 Department of Physics, Guangdong Industry University, Guangzhou, PR China
Corresponding author: J. H. Fan, firstname.lastname@example.org
Accepted: 9 August 2001
The recently compiled historical lightcurves of 10 RBLs are probed with the Jurkevich method in a search for periodic behaviour. Monte Carlo simulations of artificial lightcurves are used to detect spurious periods and evaluate sources of error in this kind of analysis. Additional analysis based on the discrete correlation function (DCF) provides confirmation for those periods that could have physical significance. We find that periods in the range 1.4–17.85 yr are present in nine objects of the sample.
Key words: methods: data analysis / galaxies: BL Lacertae objects: general / galaxies: photometry
© ESO, 2002
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