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

doi:10.1093/mnras/stac061

	A spectral hardening in the Fermi-LAT Data of 1ES 0502+675
	Ceng YH(曾雨航)2,3; Yan DH(闫大海)2; Hu, Wen 1; Wang JC(王建成)2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2022-02-03
卷号	511 期号:1 页码:938-942
关键词	radiation mechanisms: non-thermal galaxies: active gamma-rays: galaxies
ISSN号	0035-8711
DOI	10.1093/mnras/stac061
产权排序	第1完成单位
文献子类	Article
英文摘要	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.
学科主题	天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
URL标识	查看原文
出版地	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
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]
WOS关键词	SPACE-TELESCOPE OBSERVATIONS ; GAMMA-RAY ; SYNCHROTRON-RADIATION ; PHYSICAL-PROPERTIES ; COMPTON ANALYSIS ; X-RAY ; BLAZARS ; MULTIWAVELENGTH ; CATALOG ; MODEL
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000770033600007
资助机构	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]
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/24978]
专题	云南天文台_高能天体物理研究组
通讯作者	Yan DH(闫大海)
作者单位	1.Department of Physics, Jinggangshan University, Jiangxi Province, Ji’an 343009, People’s Republic of China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China; 3.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China;
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.