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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; Li, YR (reprint author), Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2014-05-01
卷号786期号:1
DOI10.1088/2041-8205/786/1/L6
产权排序第3完成单位
收录类别SCI
关键词Galaxies: Active Methods: Data Analysis Methods: Statistical Quasars: General
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.
项目资助者China-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]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN2041-8205
URL查看原文
WOS记录号WOS:000334929600006
WOS研究方向Astronomy & Astrophysics
WOS类目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
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被引频次:3[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/114a53/5445
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
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.
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
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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,&Li, YR .(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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