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A BAYESIAN METHOD FOR THE INTERCALIBRATION OF SPECTRA IN REVERBERATION MAPPING
Li, YR1; Wang, JM1,2; Hu, C1; Du, P1; Bai JM(白金明)3,4
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2014-05-01
Volume786Issue:1
DOI10.1088/2041-8205/786/1/L6
Contribution Rank第3完成单位
Indexed BySCI
KeywordGalaxies: Active Methods: Data Analysis Methods: Statistical Quasars: General
Abstract

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.

Funding ProjectChina-Israel NSFC-ISF[11361140347] ; Strategic Priority Research Program, The Emergence of Cosmological Structures, of the Chinese Academy of Sciences[XDB09000000] ; [NSFC-11133006] ; [11173023] ; [11233003] ; [11303026]
Funding OrganizationChina-Israel NSFC-ISF[11361140347] ; Strategic Priority Research Program, The Emergence of Cosmological Structures, of the Chinese Academy of Sciences[XDB09000000] ; [NSFC-11133006] ; [11173023] ; [11233003] ; [11303026]
Language英语
Subject Area天文学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN2041-8205
URL查看原文
WOS IDWOS:000334929600006
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordACTIVE GALACTIC NUCLEI ; BROAD-LINE REGION ; ACCRETING BLACK-HOLES ; DAMPED RANDOM-WALK ; SDSS STRIPE 82 ; OPTICAL VARIABILITY ; TIME VARIABILITY ; SEYFERT-GALAXIES ; QUASARS ; SIZE
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5445
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorLi, YR
Affiliation1.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
Recommended Citation
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).
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