THE ROLE OF THE DIFFUSIVE PROTONS IN THE GAMMA-RAY EMISSION OF SUPERNOVA REMNANT RX J1713.7-3946-A TWO-ZONE MODEL
文献类型：期刊论文
| 作者 | Chen, Yang1,2; Zhang, Xiao2 |
| 刊名 | Astrophysical Journal
 |
| 出版日期 | 2016-04-10 |
| 卷号 | 821期号:1页码:43 |
| ISSN号 | 0004-637X |
| 关键词 | Ism: Individual Objects (G347.3-0.5) Ism: Supernova Remnants Radiation Mechanisms:Nonthermal |
| DOI | 10.3847/0004-637x/821/1/43 |
| 文献子类 | Article |
| 英文摘要 | RX J1713.7-3946 is a prototype in the gamma-ray-bright supernova remnants (SNRs) and is in continuing debates on its hadronic versus leptonic origin of the gamma-ray emission. We explore the role played by the diffusive relativistic protons that escape from the SNR shock wave in the gamma-ray emission, apart from the high-energy particles' emission from the inside of the SNR. In the scenario that the SNR shock propagates in a clumpy molecular cavity, we consider that the gamma-ray emission from the inside of the SNR may arise either from the inverse Compton scattering or from the interaction between the trapped energetic protons and the shocked clumps. The dominant origin between them depends on the electron-to-proton number ratio. The diffusive protons that escaped from the shock wave during the expansion history can provide an outer hadronic gamma-ray component by bombarding the surrounding dense matter. The broadband spectrum can be well explained by this two-zone model, in which the gamma-ray emission from the inside governs the TeV band, while the outer emission component substantially contributes to the GeV gamma-rays. The two-zone model can also explain the TeV gamma-ray radial brightness profile that significantly stretches beyond the nonthermal X-ray-emitting region. In the calculation, we present a simplified algorithm for Li & Chen's "accumulative diffusion" model for escaping protons and apply the Markov Chain Monte Carlo method to constrain the physical parameters. |
| WOS关键词 | GALACTIC COSMIC-RAYS ; NONTHERMAL X-RAYS ; MOLECULAR CLOUDS ; PARTICLE-ACCELERATION ; SHOCK ACCELERATION ; SHELL ; TEV ; RADIATION ; GAS ; ELECTRONS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 项目编号 | 11233001 ; 2015CB857100 ; 20120091110048 |
| WOS记录号 | WOS:000373809000043 |
| 资助机构 | NSFC ; 973 Program ; Nanjing University ; Educational Ministry of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/1614]  |
| 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.Department of Astronomy, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China |
| 推荐引用方式 GB/T 7714 | Chen, Yang,Zhang, Xiao. THE ROLE OF THE DIFFUSIVE PROTONS IN THE GAMMA-RAY EMISSION OF SUPERNOVA REMNANT RX J1713.7-3946-A TWO-ZONE MODEL[J]. Astrophysical Journal,2016,821(1):43. |
| APA | Chen, Yang,&Zhang, Xiao.(2016).THE ROLE OF THE DIFFUSIVE PROTONS IN THE GAMMA-RAY EMISSION OF SUPERNOVA REMNANT RX J1713.7-3946-A TWO-ZONE MODEL.Astrophysical Journal,821(1),43. |
| MLA | Chen, Yang,et al."THE ROLE OF THE DIFFUSIVE PROTONS IN THE GAMMA-RAY EMISSION OF SUPERNOVA REMNANT RX J1713.7-3946-A TWO-ZONE MODEL".Astrophysical Journal 821.1(2016):43. |
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来源：新疆天文台
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