The gamma-ray emission produced by protons that escape from supernova remnant G349.7+0.2

doi:10.1088/1674-4527/16/10/152

CORC > 新疆天文台 > 研究单元未命名 > 110米口径全可动射电望远镜（SmART） > 110米大口径全可动射电望远镜关键技术研究（973项目） > 课题1：大样本射电天体的观测和前沿问题研究

	The gamma-ray emission produced by protons that escape from supernova remnant G349.7+0.2
	Chen, Yang 1,2; Zhang, Xiao 2; Li, Hui 3
刊名	Research in Astronomy and Astrophysics
	2016-10-01
卷号	16 期号:10 页码:152-U126
关键词	Radiation Mechanisms: Non-thermal Ism: Individual Objects (g349.7+0.2) Ism: Super-nova Remnants Gamma-rays: Ism
ISSN号	1674-4527
DOI	10.1088/1674-4527/16/10/152
文献子类	Article
英文摘要	G349.7+0.2 is an interacting supernova remnant (SNR) expanding in a dense medium. Recently, a very strong gamma-ray source coincident with this SNR has been revealed by Fermi-LAT and H.E.S.S. observations which shows a broken power-law-like spectrum. An escaping-diffusion model, including the power-law and delta-function injection, is applied to this source which can naturally explain the spectral feature in both the GeV and TeV regime. We use the Markov Chain Monte Carlo method to constrain the model parameters and find that the correction factor of slow diffusion around this SNR, chi similar to 0.01 for power-law injection and chi similar to 0.1 for delta-function injection, can fit the data best with reasonable molecular cloud mass. This slow diffusion is also consistent with previous results from both phenomenological models and theoretical predication.
WOS关键词	diffusive shock acceleration ; galactic cosmic-rays ; molecular clouds ; tev emission ; high-energy ; rx j1713.7-3946 ; magnetic-field ; amplification ; particles ; spectrum
WOS研究方向	Astronomy & Astrophysics
项目编号	11233001 ; 2015CB857100 ; 20120091110048
语种	英语
WOS记录号	WOS:000385996000003
资助机构	National Natural Science Foundation of China ; 973 Program ; the Educational Ministry of China ; the program B for Outstanding PhD candidate of Nanjing University
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/1615]
专题	新疆天文台_110米口径全可动射电望远镜（SmART）_110米大口径全可动射电望远镜关键技术研究（973项目）_课题1：大样本射电天体的观测和前沿问题研究
通讯作者	Chen, Yang
作者单位	1.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, Nanjing 210023,China 2.School of Astronomy and Space Science, Nanjing University, Nanjing 210023, China 3.Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor,MI 48109, USA
推荐引用方式 GB/T 7714	Chen, Yang,Zhang, Xiao,Li, Hui. The gamma-ray emission produced by protons that escape from supernova remnant G349.7+0.2[J]. Research in Astronomy and Astrophysics,2016,16(10):152-U126.
APA	Chen, Yang,Zhang, Xiao,&Li, Hui.(2016).The gamma-ray emission produced by protons that escape from supernova remnant G349.7+0.2.Research in Astronomy and Astrophysics,16(10),152-U126.
MLA	Chen, Yang,et al."The gamma-ray emission produced by protons that escape from supernova remnant G349.7+0.2".Research in Astronomy and Astrophysics 16.10(2016):152-U126.