A BAYESIAN METHOD FOR THE INTERCALIBRATION OF SPECTRA IN REVERBERATION MAPPING

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	A BAYESIAN METHOD FOR THE INTERCALIBRATION OF SPECTRA IN REVERBERATION MAPPING
	Li, YR 1; Wang, JM1,2 ; Hu, C 1; Du, P 1; Bai JM(白金明)3,4
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2014-05-01
卷号	786 期号:1
关键词	galaxies: active methods: data analysis methods: statistical quasars: general
ISSN号	2041-8205
通讯作者	Li, YR (reprint author), Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China.
产权排序	第三完成单位
英文摘要	Flux calibration of spectra in reverberation mapping (RM) is most often performed by assuming the flux constancy of some specified narrow emission lines, which stem from an extended region that is sometimes partially spatially resolved, in contrast to the point-like broad-line region and the central continuum source. The inhomogeneous aperture geometries used among different observation sets in a joint monitoring campaign introduce systematic deviations to the fluxes of broad lines and central continuum, and intercalibration over these data sets is required. As an improvement to the previous empirical correction performed by comparing the (nearly) contemporaneous observation points, we describe a feasible Bayesian method that obviates the need for (nearly) contemporaneous observations, naturally incorporates physical models of flux variations, and fully takes into account the measurement errors. In particular, it fits all the data sets simultaneously regardless of samplings and makes use of all of the information in the data sets. A Markov Chain Monte Carlo implementation is employed to recover the parameters and uncertainties for intercalibration. Application to the RM data sets of NGC 5548 with joint monitoring shows the high fidelity of our method.
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]	ACTIVE GALACTIC NUCLEI ; BROAD-LINE REGION ; ACCRETING BLACK-HOLES ; DAMPED RANDOM-WALK ; SDSS STRIPE 82 ; OPTICAL VARIABILITY ; TIME VARIABILITY ; SEYFERT-GALAXIES ; QUASARS ; SIZE
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/2041-8205/786/1/L6/meta
语种	英语
WOS记录号	WOS:000334929600006
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5445]
专题	云南天文台_丽江天文观测站（南方基地）云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China 2.National Astronomical Observatories of China, Chinese Academy of Sciences, 20A Datun Road, Beijing 100020, China 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
推荐引用方式 GB/T 7714	Li, YR,Wang, JM,Hu, C,et al. A BAYESIAN METHOD FOR THE INTERCALIBRATION OF SPECTRA IN REVERBERATION MAPPING[J]. ASTROPHYSICAL JOURNAL LETTERS,2014,786(1).
APA	Li, YR,Wang, JM,Hu, C,Du, P,&Bai JM.(2014).A BAYESIAN METHOD FOR THE INTERCALIBRATION OF SPECTRA IN REVERBERATION MAPPING.ASTROPHYSICAL JOURNAL LETTERS,786(1).
MLA	Li, YR,et al."A BAYESIAN METHOD FOR THE INTERCALIBRATION OF SPECTRA IN REVERBERATION MAPPING".ASTROPHYSICAL JOURNAL LETTERS 786.1(2014).