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Periodic radio variability in NRAO 530: phase dispersion minimization analysis
Lu, Jun-Chao1; Wang, Jun-Yi1,2; An, Tao3,4; Lin, Ji-Ming1; Qiu, Hong-Bing1; Lu,JC
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.
KeywordMethods: Statistical Galaxies: Active Galaxies: Quasar: Individual: Nrao 530
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000305848900004
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Document Type期刊论文
Corresponding AuthorLu,JC
Affiliation1.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
Recommended Citation
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,&Lu,JC.(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.
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