Searching for Quasiperiodic Modulations in γ-Ray Active Galactic Nuclei
Zhang,Peng-fei1,2; Yan,Da-hai3,4; Zhou,Jia-neng5; Wang,Jian-cheng3,4; Zhang,Li1
Source PublicationThe Astrophysical Journal
AbstractAbstract We perform a systematic search of quasiperiodic variabilities in γ-ray active galactic nuclei in the third Fermi Large Area Telescope source catalog (3FGL). We employ two techniques, Lomb–Scargle Periodogram and Weighted Wavelet Z-transform, to obtain power spectra of γ-ray light curves covering from 2008 August to 2016 December. The results show that besides several objects that have been reported in previous works, an additional source, the flat spectrum radio quasars PKS 0601-70 has a possible quasiperiodic variability of 450 days in its γ-ray light curves with the significance of >3σ. The physical implications of our findings are discussed.
Keywordjets active galactic nuclei blazars Gamma-rays
WOS IDIOP:0004-637X-891-2-ab71fe
PublisherThe American Astronomical Society
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Document Type期刊论文
Affiliation1.Department of Astronomy, School of Physics and Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People’s Republic of China;
2.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China;
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People’s Republic of China
5.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People’s Republic of China;
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GB/T 7714
Zhang,Peng-fei,Yan,Da-hai,Zhou,Jia-neng,et al. Searching for Quasiperiodic Modulations in γ-Ray Active Galactic Nuclei[J]. The Astrophysical Journal,2020,891(2).
APA Zhang,Peng-fei,Yan,Da-hai,Zhou,Jia-neng,Wang,Jian-cheng,&Zhang,Li.(2020).Searching for Quasiperiodic Modulations in γ-Ray Active Galactic Nuclei.The Astrophysical Journal,891(2).
MLA Zhang,Peng-fei,et al."Searching for Quasiperiodic Modulations in γ-Ray Active Galactic Nuclei".The Astrophysical Journal 891.2(2020).
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