SIMBAD references

2016AJ....151...54S - Astron. J., 151, 54 (2016/March-0)

Quasi-periodicities at year-like timescales in blazars.


Abstract (from CDS):

We searched for quasi-periodicities on year-like timescales in the light curves of six blazars in the optical–near-infrared bands and we made a comparison with the high energy emission. We obtained optical/NIR light curves from Rapid Eye Mounting photometry plus archival Small & Moderate Aperture Research Telescope System data and we accessed the Fermi light curves for the γ-ray data. The periodograms often show strong peaks in the optical and γ-ray bands, which in some cases may be inter-related. The significance of the revealed peaks is then discussed, taking into account that the noise is frequency dependent. Quasi-periodicities on a year-like timescale appear to occur often in blazars. No straightforward model describing these possible periodicities is yet available, but some plausible interpretations for the physical mechanisms causing periodic variabilities of these sources are examined.

Abstract Copyright:

Journal keyword(s): BL Lacertae objects: general - BL Lacertae objects: individual: (PKS 0537-441, OJ 287, 3C 379, PKS 1510-089, PKS 2005-489, (PKS 2155-304) - galaxies: active - galaxies: statistics - galaxies: photometry

VizieR on-line data: <Available at CDS (J/AJ/151/54): table1.dat table2.dat>

Simbad objects: 12

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