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(李彦荣); Wang JM(王建民); Hu C(胡晨); 杜璞;Li, YR; Wang, JM; Hu, C; Du, P; Bai, JM
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2014
卷号	786 期号:1 页码:L6
关键词	galaxies: active methods: data analysis methods: statistical quasars: general
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
收录类别	SCI
WOS记录号	WOS:000334929600006
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224852]
专题	高能物理研究所_粒子天体物理中心
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):L6.
APA	李彦荣.,王建民.,胡晨.,杜璞；Li, YR.,Wang, JM.,...&Bai, JM.(2014).A BAYESIAN METHOD FOR THE INTERCALIBRATION OF SPECTRA IN REVERBERATION MAPPING.ASTROPHYSICAL JOURNAL LETTERS,786(1),L6.
MLA	李彦荣,et al."A BAYESIAN METHOD FOR THE INTERCALIBRATION OF SPECTRA IN REVERBERATION MAPPING".ASTROPHYSICAL JOURNAL LETTERS 786.1(2014):L6.