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GeV-TeV gamma-ray energy spectral break of BL Lac objects
Zhong, W.1; Liu, W. G.1; Zheng YG(郑永刚)1,2,3; Zheng YG(郑永刚), Email: ynzyg@ynu.edu.cn
发表期刊ASTROPHYSICS AND SPACE SCIENCE
2018-09-01
卷号363期号:9
DOI10.1007/s10509-018-3397-8
产权排序第2完成单位
收录类别SCI
关键词Bl Lacertae Objects: General Radiation Mechanisms: Non-thermal Methods: Statistical
摘要In this paper, we compile the very-high-energy and high-energy spectral indices of 43 BL Lac objects from the literature. Based on a simple math model, , we present evidence for the origin of an observed spectral break that is denoted by the difference between the observed very-high-energy and high-energy spectral indices, . We find by linear regression analysis that and . These results suggest that the extragalactic background light attenuation and the intrinsic curvature dominate on the GeV-TeV -ray energy spectral break of BL Lac objects. We argue that the extragalactic background light attenuation is an exclusive explanation for the redshift evolution of the observed spectral break.
项目资助者National Natural Science Foundation of China(11463007, 11673060) ; Natural Science Foundation of Yunnan Province(2017FD072)
语种英语
学科领域天文学
文章类型Article
ISSN0004-640X
URL查看原文
WOS记录号WOS:000440618100002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EXTRAGALACTIC BACKGROUND LIGHT ; OPTICAL DEPTH ; BLAZARS ; DISCOVERY ; EMISSION ; HESS ; RADIATION ; DISTRIBUTIONS ; EVOLUTION ; UNIVERSE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/17392
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Zheng YG(郑永刚), Email: ynzyg@ynu.edu.cn
作者单位1.Department of Physics, Yunnan Normal University, Kunming, China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, China
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Zhong, W.,Liu, W. G.,Zheng YG,et al. GeV-TeV gamma-ray energy spectral break of BL Lac objects[J]. ASTROPHYSICS AND SPACE SCIENCE,2018,363(9).
APA Zhong, W.,Liu, W. G.,Zheng YG,&Zheng YG.(2018).GeV-TeV gamma-ray energy spectral break of BL Lac objects.ASTROPHYSICS AND SPACE SCIENCE,363(9).
MLA Zhong, W.,et al."GeV-TeV gamma-ray energy spectral break of BL Lac objects".ASTROPHYSICS AND SPACE SCIENCE 363.9(2018).
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