The gamma-ray emission produced by protons that escape from supernova remnant G349.7+0.2
文献类型：期刊论文
| 作者 | Chen, Yang1,2; Zhang, Xiao2; Li, Hui3 |
| 刊名 | Research in Astronomy and Astrophysics
 |
| 出版日期 | 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 |
| 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. |
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来源：新疆天文台
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