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A NON-PARAMETRIC APPROACH TO CONSTRAIN THE TRANSFER FUNCTION IN REVERBERATION MAPPING
Li, Yan-Rong1; Wang, Jian-Min1,2; Bai JM(白金明)3,4
Source PublicationASTROPHYSICAL JOURNAL
2016-11-10
Volume831Issue:2
DOI10.3847/0004-637X/831/2/206
Contribution Rank第3完成单位
Indexed BySCI
KeywordGalaxies: Active Quasars: General Methods: Data Analysis Methods: Statistical
Abstract

Broad emission lines of active galactic nuclei stem from a spatially extended region (broad-line region, BLR) that is composed of discrete clouds and photoionized by the central ionizing continuum. The temporal behaviors of these emission lines are blurred echoes of continuum variations (i.e., reverberation mapping, RM) and directly reflect the structures and kinematic information of BLRs through the so-called transfer function (also known as the velocity-delay map). Based on the previous works of Rybicki and Press and Zu et al., we develop an extended, non-parametric approach to determine the transfer function for RM data, in which the transfer function is expressed as a sum of a family of relatively displaced Gaussian response functions. Therefore, arbitrary shapes of transfer functions associated with complicated BLR geometry can be seamlessly included, enabling us to relax the presumption of a specified transfer function frequently adopted in previous studies and to let it be determined by observation data. We formulate our approach in a previously well-established framework that incorporates the statistical modeling of continuum variations as a damped random walk process and takes into account long-term secular variations which are irrelevant to RM signals. The application to RM data shows the fidelity of our approach.

Funding ProjectStrategic Priority Research Program - The Emergence of Cosmological Structures of the Chinese Academy of Sciences[XDB09000000] ; NSFC[NSFC-11173023] ; NSFC[NSFC-11133006] ; NSFC[NSFC11233003] ; NSFC[NSFC-11303026] ; NSFC[NSFC-11573026] ; NSFC[NSFC-U1431228] ; Ministry of Science and Technology of China[2016YFA0400702]
Funding OrganizationStrategic Priority Research Program - The Emergence of Cosmological Structures of the Chinese Academy of Sciences[XDB09000000] ; NSFC[NSFC-11173023, NSFC-11133006, NSFC11233003, NSFC-11303026, NSFC-11573026, NSFC-U1431228] ; Ministry of Science and Technology of China[2016YFA0400702]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学 ; 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
ISSN0004-637X
URL查看原文
WOS IDWOS:000400474900009
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordACTIVE GALACTIC NUCLEI ; BROAD-LINE REGION ; VELOCITY-DELAY MAPS ; DAMPED RANDOM-WALK ; BLACK-HOLE MASSES ; AGN LIGHT CURVES ; H-BETA ; OPTICAL VARIABILITY ; SEYFERT-GALAXIES ; DYNAMICAL MODELS
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10179
Collection丽江天文观测站(南方基地)
Corresponding AuthorLi, Yan-Rong
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, Yan-Rong,Wang, Jian-Min,Bai JM. A NON-PARAMETRIC APPROACH TO CONSTRAIN THE TRANSFER FUNCTION IN REVERBERATION MAPPING[J]. ASTROPHYSICAL JOURNAL,2016,831(2).
APA Li, Yan-Rong,Wang, Jian-Min,&Bai JM.(2016).A NON-PARAMETRIC APPROACH TO CONSTRAIN THE TRANSFER FUNCTION IN REVERBERATION MAPPING.ASTROPHYSICAL JOURNAL,831(2).
MLA Li, Yan-Rong,et al."A NON-PARAMETRIC APPROACH TO CONSTRAIN THE TRANSFER FUNCTION IN REVERBERATION MAPPING".ASTROPHYSICAL JOURNAL 831.2(2016).
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