HINTS OF CORRELATION BETWEEN BROAD-LINE AND RADIO VARIATIONS FOR 3C 120

被引：4
作者：
Liu, H. T. [1 ,2 ]
Bai, J. M. [1 ,2 ]
Wang, J. M. [3 ,4 ]
Li, S. K. [1 ,2 ]
机构：
[1] Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
[2] Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
[3] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
[4] Chinese Acad Sci, Ctr Theoret Phys, Sci Facil, Beijing 100049, Peoples R China
来源：
ASTRONOMICAL JOURNAL | 2014年 / 147卷 / 01期
基金：
中国国家自然科学基金;
关键词：
galaxies: active; galaxies: individual (3C 120); galaxies: jets; quasars: emission lines; radio continuum: galaxies; ACTIVE GALACTIC NUCLEI; GAMMA-RAY EMISSION; HIGH-ENERGY EMISSION; SEYFERT; GALAXIES; OPTICAL CONTINUUM; LOUD QUASARS; OBSERVATIONAL EVIDENCE; RELATIVISTIC JET; ACCRETION-DISK; EXTENDED RADIO;
D O I：
10.1088/0004-6256/147/1/17
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this paper, we investigate the correlation between broad-line and radio variations for the broad-line radio galaxy 3C 120. By the z-transformed discrete correlation function method and the model-independent flux randomization/random subset selection (FR/RSS) Monte Carlo method, we find that broad H beta line variations lead the 15 GHz variations. The FR/RSS method shows that the H beta line variations lead the radio variations by a factor of tau(ob) = 0.34 +/- 0.01 yr. This time lag can be used to locate the position of the emitting region of radio outbursts in the jet, on the order of similar to 5 lt-yr from the central engine. This distance is much larger than the size of the broad-line region. The large separation of the radio outburst emitting region from the broad-line region will observably influence the gamma-ray emission in 3C 120.
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页数：6
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