论文标题
部分可观测时空混沌系统的无模型预测
Three Cases of Optical Periodic Modulation in Active Galactic Nuclei
论文作者
论文摘要
我们报告了在两个活性银河核（AGN）和一个候选AGN中发现的光学周期调制的情况。分析从大型瞬态调查获得的档案光学数据，即Catalina Real-Transient调查（CRT）和Zwicky Transient设施（ZTF），我们发现周期性的周期性为2169.7、2103.1和1462.6 \，日期为J0122+1032+1032+1032，J1007+1248（或PG 1248）（或PG〜1004） J2131 $ - $ 1127。前两个的光谱表明，第一个可能是大型的，第二个是1型Seyfert Galaxy，虽然没有光谱信息可用于第三个，但其整体属性表明它可能是AGN。此外，还分析了宽阔的红外勘探器（WISE）采集的三个来源的中红外（MIR）光曲线数据。光曲线显示出显着的变化，但与光学周期性无关。基于广泛讨论的超质量黑洞二进制（SMBHB）方案，我们讨论了光学调制的起源。在SMBHB场景中，还讨论了两个可能的有趣功能，即J2131 $ - $ 1127中的另外162天短的光学周期性 - $ 1127和一致性J1007+1248的X射线通量变化具有光学周期性。
We report on the case of optical periodic modulation discovered in two Active Galactic Nuclei (AGN) and one candidate AGN. Analyzing the archival optical data obtained from large transient surveys, namely the Catalina Real-Transient Survey (CRTS) and the Zwicky Transient Facility (ZTF), we find periodicities of 2169.7, 2103.1, and 1462.6\,day in sources J0122+1032, J1007+1248 (or PG~1004+1248), and J2131$-$1127, respectively. The optical spectra of the first two indicate that the first is likely a blazar and the second a type 1 Seyfert galaxy, and while no spectroscopic information is available for the third one, its overall properties suggest that it is likely an AGN. In addition, mid-infrared (MIR) light curve data of the three sources, taken by the Wide-field InfraredSurvey Explorer (WISE), are also analyzed. The light curves show significant variations, but not appearing related to the optical periodicities. Based on the widely-discussed super-massive black-hole binary (SMBHB) scenario, we discuss the origin of the optical modulation. Two possible interesting features, an additional 162-day short optical periodicity in J2131$-$1127 and the consistency the X-ray flux variations of J1007+1248 with its optical periodicity, are also discussed within the SMBHB scenario.
