A Study of Fermi-LAT GeV gamma-Ray Emission toward the Magnetar-harboring Supernova Remnant Kesteven 73 and Its Molecular Environment
文献类型：期刊论文
| 作者 | Liu, Bing1; Chen, Yang1,2; Zhang, Xiao1; Liu, Qian-Cheng1; He, Ting-Lan1,3; Zhou, Xin4 ; Zhou, Ping1,5; Su, Yang4
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2017-12-10 |
| 卷号 | 851期号:1页码:11 |
| ISSN号 | 0004-637X |
| 关键词 | acceleration of particles gamma rays: ISM ISM: individual objects (G27.4+0.0=Kes 73) ISM: molecules ISM: supernova remnants stars: magnetars (1E 1841-045) |
| DOI | 10.3847/1538-4357/aa97d9 |
| 通讯作者 | Chen, Yang() |
| 英文摘要 | We report our independent Gey gamma-ray study the young shell-type supernova remnant (SNR) Kes 73, which harbors a central magnetar, and CO-line millimeter observations toward the SNR. Using 7.6 years of Fermi-LAT observation data, we detected an extended gamma-ray source ("source A") with centroid on the west of the SNR, with a significance of 21 sigma in 0.1-300 GeV and an error circle of 5'.4n angular radius. The gamma-ray spectrum cannot be reproduced by a pure leptonic emission or a pure emission from the magnetar, and thus a hadronic emission component is needed. The CO-line observations reveal a molecular cloud (MC) at V-LSR similar to 90 km s(-1), which demonstrates morphological correspondence with the western boundary of the SNR brightened in multiwavelength. The (CO)-C-12 (J-1)/(CO)-C-12 (J-1-0)retioin the left (blue) wing 85-88 km s(-1) is prominently elevated to similar to 1.1 along the northwestern boundary, providing kinematic evidence of the SNR-MC interaction. This SNR-MC association yields a kinematic distance 9 kpc to Kes 73. The MC is shown to be capable of accounting for the hadronic gamma ray emission component. The gamma-ray spectrum can be interpreted with a pure hadronic emission or a magnetar+ hadronic hybrid emission. In the case of pure hadronic emission, the spectral index of the protons is 2.4, very similar to that of the radio-emitting electrons, essentially consistent with the diffusive shock acceleration theory. In the case of magnetar+ hadronic hybrid emission, a magnetic field decay rate. 1036 erg s(-1) is needed to power the magnetar's curvature radiation. |
| WOS关键词 | LARGE-AREA TELESCOPE ; GALACTIC PLANE ; CO SURVEY ; DISCOVERY ; DISTANCE ; MISSION ; CLOUDS ; W44 |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000417483700008 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/22112]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Chen, Yang |
| 作者单位 | 1.Nanjing Univ, Dept Astron, 163 Xianlin Ave, Nanjing 210023, Jiangsu, Peoples R China 2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210093, Jiangsu, Peoples R China 3.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 4.Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 5.Univ Amsterdam, Anton Pannekoek Inst, POB 94249, NL-1090 GE Amsterdam, Netherlands |
| 推荐引用方式 GB/T 7714 | Liu, Bing,Chen, Yang,Zhang, Xiao,et al. A Study of Fermi-LAT GeV gamma-Ray Emission toward the Magnetar-harboring Supernova Remnant Kesteven 73 and Its Molecular Environment[J]. ASTROPHYSICAL JOURNAL,2017,851(1):11. |
| APA | Liu, Bing.,Chen, Yang.,Zhang, Xiao.,Liu, Qian-Cheng.,He, Ting-Lan.,...&Su, Yang.(2017).A Study of Fermi-LAT GeV gamma-Ray Emission toward the Magnetar-harboring Supernova Remnant Kesteven 73 and Its Molecular Environment.ASTROPHYSICAL JOURNAL,851(1),11. |
| MLA | Liu, Bing,et al."A Study of Fermi-LAT GeV gamma-Ray Emission toward the Magnetar-harboring Supernova Remnant Kesteven 73 and Its Molecular Environment".ASTROPHYSICAL JOURNAL 851.1(2017):11. |
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来源：紫金山天文台
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