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Using the Markov chain Monte Carlo method to study the physical properties of GeV-TeV BL Lac objects
Qin LH(秦龙华)1,2,3,4; Wang JC(王建成)1,3,4; Yang CY(杨初源)1,3,4; Yuan ZL(袁尊理)1,3,4; Mao JR(毛基荣)1,3,4; Kang, Shiju5
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2018
卷号70期号:1
DOI10.1093/pasj/psx150
产权排序第1完成单位
收录类别SCI ; EI
关键词Galaxies: Active Galaxies: Jets Gamma Rays: General Radiation Mechanism: Non-thermal
摘要

We fit the spectral energy distributions (SEDs) of 46 GeV-TeV BLLac objects in the frame of leptonic one-zone synchrotron self-Compton (SSC) model and investigate the physical properties of these objects. We use the Markov chain Monte Carlo (MCMC) method to obtain the basic parameters, such as magnetic field (B), the break energy of the relativistic electron distribution (gamma(b)'), and the electron energy spectral index. Based on the modeling results, we support the following scenarios for GeV-TeV BL Lac objects. (1) Some sources have large Doppler factors, implying other radiation mechanism should be considered. (2) Compared with flat spectrum quasars (FSRQs), GeV-TeV BL Lac objects have weaker magnetic fields and larger Doppler factors, which cause the ineffective cooling and shift the SEDs to higher bands. Their jet powers are around 4.0 x 10(45) erg s(-1), compared with radiation power, 5.0 x 10(42) erg s(-1), indicating that only a small fraction of jet power is transformed into the emission power. (3) For some BL Lacs with large Doppler factors, their jet components could have two substructures, e.g., the fast core and the slow sheath. For most GeV-TeV BL Lacs, Kelvin-Helmholtz instabilities are suppressed by their higher magnetic fields, leading to micro-variability or intro-day variability in the optical bands. (4) Combined with a sample of FSRQs, an anti-correlation between the peak luminosity, L-pk, and the peak frequency, nu(pk), is obtained, favoring the blazar sequence scenario. In addition, an anti-correlation between the jet power, P-jet, and the break Lorentz factor, gamma(b), also supports the blazar sequence.

资助项目National Natural Science Foundation of China[11673060] ; National Natural Science Foundation of China[11661161010] ; National Natural Science Foundation of China[11763005] ; Natural Science Foundation of Yunnan Province[2016FB003]
项目资助者National Natural Science Foundation of China[11673060, 11661161010, 11763005] ; Natural Science Foundation of Yunnan Province[2016FB003]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
WOS记录号WOS:000425504400007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]GAMMA-RAY EMISSION ; SIMULTANEOUS MULTIWAVELENGTH OBSERVATIONS ; EXTRAGALACTIC BACKGROUND LIGHT ; SPECTRAL ENERGY-DISTRIBUTIONS ; BLACK-HOLE MASSES ; X-RAY ; CORRELATED VARIABILITY ; RAPID VARIABILITY ; RELATIVISTIC JETS ; MAGIC TELESCOPES
EI入藏号20215211380035
EI主题词Gamma rays
EI分类号549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 657.2 Extraterrestrial Physics and Stellar Phenomena - 701.2 Magnetism: Basic Concepts and Phenomena - 922.1 Probability Theory - 922.2 Mathematical Statistics - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics
引用统计
被引频次:4[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/114a53/12131
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 LH(秦龙华)
作者单位1.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan Province 650011, China
2.University of Chinese Academy of Sciences, No. 19, Yuquan Road, Shijingshan District, Beijing 100049, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan Province 650011, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
5.School of Electrical Engineering, Liupanshui Normal University, Liupanshui, Guizhou, 553004, China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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GB/T 7714
Qin LH,Wang JC,Yang CY,et al. Using the Markov chain Monte Carlo method to study the physical properties of GeV-TeV BL Lac objects[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2018,70(1).
APA Qin LH,Wang JC,Yang CY,Yuan ZL,Mao JR,&Kang, Shiju.(2018).Using the Markov chain Monte Carlo method to study the physical properties of GeV-TeV BL Lac objects.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,70(1).
MLA Qin LH,et al."Using the Markov chain Monte Carlo method to study the physical properties of GeV-TeV BL Lac objects".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 70.1(2018).
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