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Periodic radio variability in NRAO 530: phase dispersion minimization analysis
Lu JunChao1; Wang JunYi1; An Tao3; Lin JiMing1; Qiu HongBing1
2012
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume12Issue:6Pages:643
AbstractA 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.
KeywordTIME-SERIES ANALYSIS UNEVENLY SPACED DATA methods: statistical galaxies: active galaxies: quasar: individual: NRAO 530
Language英语
Funding Project[National Basic Research Program of China (973 Program)] ; [Guangxi Natural Science Foundation] ; [Science and Technology Commission of Shanghai Municipality] ; [Chinese Academy of Sciences] ; [Netherlands Science Foundation] ; [NSF] ; [NASA] ; [University of Michigan]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/69267
Collection中国科学院国家天文台
Affiliation1.上海市地震局
2.湘潭大学
3.中国科学院国家天文台
4.中国科学院紫金山天文台
Recommended Citation
GB/T 7714
Lu JunChao,Wang JunYi,An Tao,et al. Periodic radio variability in NRAO 530: phase dispersion minimization analysis[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2012,12(6):643.
APA Lu JunChao,Wang JunYi,An Tao,Lin JiMing,&Qiu HongBing.(2012).Periodic radio variability in NRAO 530: phase dispersion minimization analysis.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,12(6),643.
MLA Lu JunChao,et al."Periodic radio variability in NRAO 530: phase dispersion minimization analysis".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 12.6(2012):643.
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