活动星系核中的准周期振荡现象  

Quasi-periodic Oscillations in Active Galactic Nucleis

作　　者：李根源 王仲翔 LI Gen-yuan;WANG Zhong-xiang(Department of Astronomy,School of Physics and Astronomy,Key Laboratory of Astroparticle Physics of Yunnan Province,Yunnan University,Kunming 650091,China;Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China)

机构地区：[1]云南大学物理与天文学院天文系,昆明650091 [2]中国科学院上海天文台,上海200030

出　　处：《天文学进展》2023年第2期169-180,共12页Progress In Astronomy

基　　金：云南省重点基金(202201AS070005);云南省科学项目基金(2022Y055)。

摘　　要：近年来,在活动星系核的光变曲线中越来越多的准周期振荡现象被发现并报道,而对此类现象的研究很有可能成为一种探索超大质量黑洞物理机制的特殊且有效的手段。首次收集了报道出的准周期振荡事例,并对其分不同波段进行了整理;此外还介绍了不同波段上显著事例的特点并阐明其相关的物理过程。根据所搜集的事例,讨论了它们的整体特点,其中所探测的周期具有很强的观测选择效应,并且至今高可信度的事例不多。目前考虑的准周期振荡的产生机制都与Lense-Thirring效应或双黑洞系统有关。相信在不久的将来,随着各类大型巡天项目的开展,会有大量的活动星系核准周期振荡现象被发现,这将有助于对该现象的深入研究。In recent years,many cases of the quasi-periodic oscillation penomenon have been discovered in the light curves of active galactic nuclei,and the study may provide a particularly useful way to explore the physics of the supermassive black holes in the center.We collect these reported quasi-periodic oscillation cases in different bands,and summarize them in this paper.Based on the collected cases,we discuss their overall characteristics,among which the detected periods have a strong observational selection effect and there are few cases with high significance so far.We briefly discuss the mechanisms for producing quasi-periodic oscillations currently under consideration,most of which are related to the Lenense-Thirring effect or binary nature of the central black hole systems.We believe that a large number of quasi-periodic oscillations will be discovered in the near future with the launch of various large-survey programs at different wavelength bands.

关 键 词：活动星系核 多波段 准周期振荡 类星体 

分 类 号：P157.6[天文地球—天文学]