Broad-Band Spectral Indices Variability of BL Lacertae by Wavelet Method

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	Broad-Band Spectral Indices Variability of BL Lacertae by Wavelet Method
	Zhang HJ(张皓晶)1,2 ; Bai JM(白金明)1 ; Bao, YY 3; Zhang, X 2
刊名	JOURNAL OF ASTROPHYSICS AND ASTRONOMY
	2014-09
卷号	35 期号:3 页码:489-493
关键词	Galaxies: BL Lacertae objects individual: BL Lacertae: broad-band spectral indices periodic variation methods: numerical: wavelet analysis
ISSN号	0250-6335
通讯作者	Zhang, HJ (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ, Kunming 650011, Yunnan, Peoples R China.
产权排序	第一完成单位
英文摘要	BL Lacertae is one of the famous AGN that shows convincing evidence to support periodic variability. We compile R-band data and radio 22 GHz database from the available literature to build the light curves and to calculate broad-band spectral indices. This paper employs the wavelet periodic estimation method. The analysis results indicate that the most possible period is 7.02-7.36 yr in the selected wave-bands. The broad-band spectral indices have a possible period of 4.11 yr as a half value in selected wave-bands. The results confirm that the variability period in the radio 22 GHz is in agreement with the optical R band of about 7.01 yr, as also mentioned in other literatures.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	RAY-LOUD BLAZARS ; GAMMA-RAY ; LIGHT CURVES ; RADIO VARIABILITY ; DISTRIBUTIONS ; EMISSION ; OBJECTS
收录类别	SCI
原文出处	http://link.springer.com/article/10.1007%2Fs12036-014-9263-3
语种	英语
WOS记录号	WOS:000350481700067
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5441]
专题	云南天文台_丽江天文观测站（南方基地）
作者单位	1.Yunnan Astronomical Observatory, National Astronomical Observatory, Chinese Academy of Science, Kunming, Yunnan, 650011, China 2.College of Physics and Electronics, Yunnan Normal University, Kunming, Yunnan, 650092, China 3.Department of Physics, Yuxi Teachers’ College, Yuxi, Yunnan, 653100, China
推荐引用方式 GB/T 7714	Zhang HJ,Bai JM,Bao, YY,et al. Broad-Band Spectral Indices Variability of BL Lacertae by Wavelet Method[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2014,35(3):489-493.
APA	Zhang HJ,Bai JM,Bao, YY,&Zhang, X.(2014).Broad-Band Spectral Indices Variability of BL Lacertae by Wavelet Method.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,35(3),489-493.
MLA	Zhang HJ,et al."Broad-Band Spectral Indices Variability of BL Lacertae by Wavelet Method".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 35.3(2014):489-493.