Computing the Light Periods of Blazars with the Periodogram Spectral Analysis Method

Details Computing the Light Periods of Blazars with the Periodogram Spectral Analysis Method Computing the Light Periods of Blazars with the Periodogram Spectral Analysis Method

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cha%26a..32..151t&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 32, Issue 2, p. 151-163.

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

The periodogram spectral analysis method applicable to equallyspaced time series is discussed, and the method is tested first with a simulated data series. It is confirmed that this method is effective for noisy series. Then, applying this method to the analysis of the light periods of the quasars 3C 279 and 3C 345 as well as the BL Lac objects OJ 287 and ON 231, we obtain their light periods to be 7.14 yr, 10.00 yr, 11.76 yr and 6.80 yr, respectively. These results obtained by periodogram spectral analysis are consistent with those obtained by the Jurkevich method in the literature. We have analyzed the effects of different window functions, and commented on their correct selection in practical applications.

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