KMS of Xinjiang Astronomical Observatory, CAS
| The gamma-ray emission produced by protons that escape from supernova remnant G349.7+0.2 | |
| Zhang, Xiao1; Li, Hui2; Chen, Yang1,3 | |
| 2016-10-01 | |
| Source Publication | Research in Astronomy and Astrophysics
 |
| ISSN | 1674-4527 |
| Volume | 16Issue:10Pages:152-U126 |
| Abstract | 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. |
| Correspondent Email | ygchen@nju.edu.cn |
| Keyword | Radiation Mechanisms: Non-thermal Ism: Individual Objects (g349.7+0.2) Ism: Super-nova Remnants Gamma-rays: Ism |
| Subtype | Article |
| DOI | 10.1088/1674-4527/16/10/152 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | diffusive shock acceleration ; galactic cosmic-rays ; molecular clouds ; tev emission ; high-energy ; rx j1713.7-3946 ; magnetic-field ; amplification ; particles ; spectrum |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000385996000003 |
| Project Number | 11233001 ; 2015CB857100 ; 20120091110048 |
| Funding Organization | National Natural Science Foundation of China ; 973 Program ; the Educational Ministry of China ; the program B for Outstanding PhD candidate of Nanjing University |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/1615 |
| Collection | 110米口径全可动射电望远镜（QTT）_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 |
| Corresponding Author | Chen, Yang |
| Affiliation | 1.School of Astronomy and Space Science, Nanjing University, Nanjing 210023, China 2.Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor,MI 48109, USA 3.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, Nanjing 210023,China |
| Recommended Citation GB/T 7714 | Zhang, Xiao,Li, Hui,Chen, Yang. 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 | Zhang, Xiao,Li, Hui,&Chen, Yang.(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 | Zhang, Xiao,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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Zhang_2016_Res._Astr（159KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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