A Possible 3-Year Quasi-Periodic Oscillation in γ-Ray Emission from the FSRQ S5 1044+71

Abstract

Variability is a typical observation feature of Fermi blazars, sometimes it shows quasi-periodic oscillation (QPO). In this work, we obtained 5-day binned light curves (with a time coverage of $\sim$ 12.9 yr) for S5 1044+71 based on Fermi LAT data, adopted five different methods: Date-compensated Discrete Fourier Transform (DCDFT), Jurkevich (JV), Lomb-Scargle Periodogram (LSP), a Fortran 90 program (REDFIT) and the Weighted Wavelet Z-transform (WWZ) to the $\gamma$-ray light curve, and found a possible QPO of 3.06 $\pm$ 0.43 yr at the significance level of $\sim 3.6\sigma$. A binary black hole model including accretion model and dual-jets model is used to explain this quasi-periodic variability. We also estimated the Doppler factors and the apparent velocity for the two jet components. We speculate that this $\gamma$-ray quasi-periodic modulation suggest the presence of a binary supermassive black hole in S5 1044+71.

11 pages, 10 figures, accepted by APJ

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Cited by in corpus (8)

• Quasi-periodic oscillations in the $\gamma$-ray light curves of bright active galactic nuclei
• Two Transient Quasi-periodic Oscillations in $\gamma$-Ray Emission from the Blazar S4 0954+658
• Singular Spectrum Analysis of Fermi-LAT Blazar Light Curves: A Systematic Search for Periodicity and Trends in the Time Domain
• Repeated patterns of gamma-ray flares suggest structured jets of blazars as likely neutrino sources
• Revisiting radio variability of the blazar 3C 454.3
• The detection of possible $\gamma$-ray quasi-periodic modulation with $\sim$600 days from the blazar S2 0109+22
• SDSS J153231.80+420342.7: a triple black hole candidate with a close binary black hole
• A precessing jet from a supermassive black hole: multi-wavelength observations of S5 1044+71