Periodic radio variability in NRAO 530: phase dispersion minimization analysis

	Periodic radio variability in NRAO 530: phase dispersion minimization analysis
	Lu, Jun-Chao 1; Wang, Jun-Yi 1,2; An, Tao3,4 ; Lin, Ji-Ming 1; Qiu, Hong-Bing 1
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2012-06-01
卷号	12 期号:6 页码:643-650
关键词	methods: statistical galaxies: active galaxies: quasar: individual: NRAO 530
英文摘要	A periodicity analysis of the radio light curves of the blazar NRAO 530 at 14.5, 8.0, and 4.8 GHz is presented employing an improved phase dispersion minimization technique. The result, which shows two persistent periodic components of similar to 6 and similar to 10 yr at all three frequencies, is consistent with the results obtained with the Lomb-Scargle periodogram and weighted wavelet Z-transform algorithms. The reliability of the derived periodicities is confirmed by the Monte Carlo numerical simulations which show a high statistical confidence. (Quasi-)Periodic fluctuations of the radio luminosity of NRAO 530 might be associated with the oscillations of the accretion disk triggered by hydrodynamic instabilities of the accreted flow.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	TIME-SERIES ANALYSIS ; UNEVENLY SPACED DATA
收录类别	SCI
语种	英语
WOS记录号	WOS:000305848900004
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/18123]
专题	上海天文台_VLBI研究室
作者单位	1.Guilin Univ Elect Technol, Minist Educ, Key Lab Cognit Radio & Informat Proc, Guilin 541004, Peoples R China 2.Xiangtan Univ, Sch Math & Computat Sci, Xiangtan 411105, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Lu, Jun-Chao,Wang, Jun-Yi,An, Tao,et al. Periodic radio variability in NRAO 530: phase dispersion minimization analysis[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2012,12(6):643-650.
APA	Lu, Jun-Chao,Wang, Jun-Yi,An, Tao,Lin, Ji-Ming,&Qiu, Hong-Bing.(2012).Periodic radio variability in NRAO 530: phase dispersion minimization analysis.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,12(6),643-650.
MLA	Lu, Jun-Chao,et al."Periodic radio variability in NRAO 530: phase dispersion minimization analysis".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 12.6(2012):643-650.