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The multi-wavelength correlations and the evolution of spectral index on the quasar 3C 273
Dai, Ben-Zhong1; Zhang, Bing-Kai1; Zhang L(张力)1,2
发表期刊NEW ASTRONOMY
2006-05
卷号11期号:7页码:471-480
DOI10.1016/j.newast.2005.11.005
产权排序第2完成单位
收录类别SCI ; EI
关键词Quasars : General Quasars : Individual (3c 273) Radio Continuum : Galaxies X-rays : Galaxies
摘要

The observed data from 2 keV to 5 GHz were complied to investigate possible correlations between different frequency variations by means of discrete correlation function (DCF) analysis. The results show that there are significant flux correlations between different radio bands and the weak correlations between radio and optical variability. The variations of higher frequency components would lead those of lower frequency components. Due to the sparse and uneven data in the X-ray band, the correlations between X-ray and the lower energy bands (radio and optical) cannot be confirmed. In addition, we give the spectral index evolution in each energy band and find out that there are strong anti-correlation between spectral index and flux, in the sense that the spectral index decreases with the flux increases. (c) 2005 Elsevier B.V. All rights reserved.

语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
学科门类理学 ; 理学::天文学
文章类型Article
ISSN1384-1076
URL查看原文
WOS记录号WOS:000237133600002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Active Galactic Nuclei ; Bl Lacertae Objects ; Ubvri Photopolarimetric Observations ; Radio Light Curves ; X-ray ; Optical Variability ; Blazars ; 3c-273 ; Sample ; Flux
EI入藏号2006179842888
EI主题词Astrophysics
EI分类号657.2extraterrestrial Physics And Stellar Phenomena - 921mathematics - 922.2mathematical Statistics - 932.1high Energy Physics - 933solid State Physics
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/4204
专题其他
通讯作者Dai, Ben-Zhong
作者单位1.Department of Physics, Yunnan University, Cuihu North Road 2, Kunming, Yunnan 650091, PR China
2.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, PR China
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GB/T 7714
Dai, Ben-Zhong,Zhang, Bing-Kai,Zhang L. The multi-wavelength correlations and the evolution of spectral index on the quasar 3C 273[J]. NEW ASTRONOMY,2006,11(7):471-480.
APA Dai, Ben-Zhong,Zhang, Bing-Kai,&Zhang L.(2006).The multi-wavelength correlations and the evolution of spectral index on the quasar 3C 273.NEW ASTRONOMY,11(7),471-480.
MLA Dai, Ben-Zhong,et al."The multi-wavelength correlations and the evolution of spectral index on the quasar 3C 273".NEW ASTRONOMY 11.7(2006):471-480.
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