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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
发表期刊ASTROPHYSICAL JOURNAL
2016-11-10
卷号831期号:2
DOI10.3847/0004-637X/831/2/206
产权排序第3完成单位
收录类别SCI
关键词Galaxies: Active Quasars: General Methods: Data Analysis Methods: Statistical
摘要

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.

资助项目Strategic 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]
项目资助者Strategic 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]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000400474900009
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACTIVE 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
引用统计
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/114a53/10179
专题丽江天文观测站(南方基地)
通讯作者Li, Yan-Rong
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, 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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