A spectral hardening in the Fermi-LAT Data of 1ES 0502+675

doi:10.1093/mnras/stac061

YNAO OpenIR > 高能天体物理研究组

	A spectral hardening in the Fermi-LAT Data of 1ES 0502+675
	Ceng YH(曾雨航)1,2 ; Yan DH(闫大海)1 ; Hu, Wen 3; Wang JC(王建成)1
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2022-02-03
卷号	511 期号:1 页码:938-942
DOI	10.1093/mnras/stac061
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	radiation mechanisms: non-thermal galaxies: active gamma-rays: galaxies
摘要	The gamma-ray spectral feature of the blazar 1ES 0502+675 is investigated by using Fermi Large Area Telescope Pass 8 data (between 100 MeV and 300 GeV) covering from 2008 August to 2021 April. A significant (similar to 4 sigma) hardening at similar to 1 GeV is found in the gamma-ray spectrum during a moderately flaring state (MJD 55050-55350). The photon index below and above the break energy is Gamma(1) = 2.36 +/- 0.31 and Gamma(2) = 1.33 +/- 0.11, respectively. In the rest of the observations, the gamma-ray spectrum can be described by a power-law form with the photon index of approximate to 1.6. In the frame of a one-zone synchrotron self-Compton (SSC) model, the spectral hardening is interpreted as the transition between the synchrotron component and the SSC component. This could be the result of a slight increase of the break or maximum Lorentz factor of the electrons.
资助项目	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[NSFC-11803081] ; CAS Youth Innovation Promotion Association ; Basic research Program of Yunnan Province[202001AW070013]
项目资助者	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[NSFC-11803081] ; CAS Youth Innovation Promotion Association ; Basic research Program of Yunnan Province[202001AW070013]
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
文章类型	Article
出版者	OXFORD UNIV PRESS
出版地	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN	0035-8711
URL	查看原文
WOS记录号	WOS:000770033600007
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	SPACE-TELESCOPE OBSERVATIONS ; GAMMA-RAY ; SYNCHROTRON-RADIATION ; PHYSICAL-PROPERTIES ; COMPTON ANALYSIS ; X-RAY ; BLAZARS ; MULTIWAVELENGTH ; CATALOG ; MODEL
EI入藏号	20225113263678
EI主题词	Gamma rays
EI分类号	537.1 Heat Treatment Processes - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/24978
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	Yan DH(闫大海)
作者单位	1.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China; 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; 3.Department of Physics, Jinggangshan University, Jiangxi Province, Ji’an 343009, People’s Republic of 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
推荐引用方式 GB/T 7714	Ceng YH,Yan DH,Hu, Wen,et al. A spectral hardening in the Fermi-LAT Data of 1ES 0502+675[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2022,511(1):938-942.
APA	Ceng YH,Yan DH,Hu, Wen,&Wang JC.(2022).A spectral hardening in the Fermi-LAT Data of 1ES 0502+675.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,511(1),938-942.
MLA	Ceng YH,et al."A spectral hardening in the Fermi-LAT Data of 1ES 0502+675".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 511.1(2022):938-942.

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