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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; Qin, Longhua(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China)
2018
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
卷号473期号:3页码:3755-3764
产权排序第1完成单位
摘要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.
关键词Galaxies: Active Galaxies: Jet Infrared: Diffuse Background Radiation Mechanism: Non-thermal
学科领域天文学
DOI10.1093/mnras/stx2388
项目资助者National 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
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收录类别SCI
语种英语
文章类型Article
WOS研究方向Astronomy & Astrophysics
WOS标题词Science & Technology ; Physical Sciences
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000423809400069
关键词[WOS]EXTRAGALACTIC BACKGROUND LIGHT ; HIGH-ENERGY EMISSION ; GAMMA-RAY OPACITY ; LACERTAE OBJECTS ; BLAZARS ; FERMI ; REDSHIFT ; ACCELERATION ; VARIABILITY ; UNIVERSE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12203
专题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
通讯作者Qin, Longhua(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China)
作者单位1.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
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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.,...&Qin, Longhua.(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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