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Constraining the red shifts of TeV BL Lac objects
Qin LH(秦龙华)1,2,3,4; Wang JC(王建成)1,3,4; Yan DH(闫大海)1,3,4; Yang CY(杨初源)1,3,4; Yuan ZL(袁尊理)1,3,4; Zhou M(周明)1,3,4
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2018
Volume473Issue:3Pages:3755-3764
DOI10.1093/mnras/stx2388
Contribution Rank第1完成单位
Indexed BySCI
KeywordGalaxies: Active Galaxies: Jet Infrared: Diffuse Background Radiation Mechanism: Non-thermal
Abstract

We present a model-dependent method to estimate the red shifts of three TeV BL Lac objects (BL Lacs) through fitting their (quasi-) simultaneous multi-waveband spectral energy distributions (SEDs) with a one-zone leptonic synchrotron self-Compton model. Considering the impact of electron energy distributions (EEDs) on the results, we use three types of EEDs to fit the SEDs: a power-law EED with exponential cut-off (PLC), a log-parabola (PLLP) EED and the broken power-law (BPL) EED. We also use a parameter alpha to describe the uncertainties of the extragalactic background light models, as in Abdo et al. We then use a Markov chain Monte Carlo method to explore the multi-dimensional parameter space and obtain the uncertainties of the model parameters based on the observational data. We apply our method to obtain the red shifts of three TeV BL Lac objects in the marginalized 68 per cent confidence, and find that the PLC EED does not fit the SEDs. For 3C66A, the red shift is 0.14-0.31 and 0.16-0.32 in the BPL and PLLP EEDs. For PKS1424+240, the red shift is 0.55-0.68 and 0.55-0.67 in the BPL and PLLP EEDs. For PG1553+113, the red shift is 0.22-0.48 and 0.22-0.39 in the BPL and PLLP EEDs. We also estimate the red shift of PKS1424+240 in the high stage to be 0.46-0.67 in the PLLP EED, roughly consistent with that in the low stage.

Funding ProjectNational Aeronautics and Space Administration ; National Natural Science Foundation of China[11673060] ; National Natural Science Foundation of China[11661161010] ; National Natural Science Foundation of China[11603066] ; Natural Science Foundation of Yunnan Province[2016FB003] ; Light of West China Programme of the Chinese Academy of Sciences
Funding OrganizationNational Aeronautics and Space Administration ; National Natural Science Foundation of China[11673060, 11661161010, 11603066] ; Natural Science Foundation of Yunnan Province[2016FB003] ; Light of West China Programme of the Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000423809400069
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEXTRAGALACTIC BACKGROUND LIGHT ; HIGH-ENERGY EMISSION ; GAMMA-RAY OPACITY ; LACERTAE OBJECTS ; BLAZARS ; FERMI ; REDSHIFT ; ACCELERATION ; VARIABILITY ; UNIVERSE
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12203
Collection高能天体物理研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorQin LH(秦龙华); Wang JC(王建成); Yan DH(闫大海)
Affiliation1.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan Province 650011, PR China
2.University of Chinese Academy of Sciences, Beijing, PR China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, PR China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qin LH,Wang JC,Yan DH,et al. Constraining the red shifts of TeV BL Lac objects[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,473(3):3755-3764.
APA Qin LH,Wang JC,Yan DH,Yang CY,Yuan ZL,&Zhou M.(2018).Constraining the red shifts of TeV BL Lac objects.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,473(3),3755-3764.
MLA Qin LH,et al."Constraining the red shifts of TeV BL Lac objects".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 473.3(2018):3755-3764.
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