FERMI STUDY OF 5–300 GeV EMISSION FROM THE HIGH-MASS PULSAR BINARY PSR B1259-63/LS 2883
文献类型：期刊论文
| 作者 | Xing,Yi2; Wang,Zhongxiang2; Takata,Jumpei1 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2016-08-31 |
| 卷号 | 828期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | gamma-rays: stars pulsars: individual (PSR B1259-63) |
| DOI | 10.3847/0004-637X/828/1/61 |
| 英文摘要 | ABSTRACT We report the results from our detailed analysis of the Fermi Large Area Telescope data for the pulsar binary PSR?B1259?63/LS?2883. During the GeV flares that occurred when the pulsar was in the periastron passages, we have detected a 5–300 GeV component at ?5σ in emission from the binary. The detection verifies the presence of the component that has been marginally found in previous studies of the binary. Furthermore, we have discovered that this component was marginally present even in the quiescent state of the binary, specifically the mean anomaly phase 0.7–0.9. The component can be described by a power law with a photon index Γ?～?1.4, and the flux in the flares is approximately one order of magnitude higher than that in quiescence. We discuss the origin of this component. It likely arises from the inverse-Compton process: due to the interaction between the winds from the pulsar and its massive companion, high-energy particles from the shock scatter the seed photons from the companion to GeV/TeV energies. Based on this scenario, model fits to the broad-band X-ray to TeV spectra of the binary in the flaring and quiescent states are provided. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-828-1-61 |
| 源URL | [http://119.78.226.72/handle/331011/32153]  |
| 专题 | 中国科学院上海天文台 |
| 作者单位 | 1.Physics Department, Huazhong University of Science and Technology, Wuhan, China 2.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China |
| 推荐引用方式 GB/T 7714 | Xing,Yi,Wang,Zhongxiang,Takata,Jumpei. FERMI STUDY OF 5–300 GeV EMISSION FROM THE HIGH-MASS PULSAR BINARY PSR B1259-63/LS 2883[J]. The Astrophysical Journal,2016,828(1). |
| APA | Xing,Yi,Wang,Zhongxiang,&Takata,Jumpei.(2016).FERMI STUDY OF 5–300 GeV EMISSION FROM THE HIGH-MASS PULSAR BINARY PSR B1259-63/LS 2883.The Astrophysical Journal,828(1). |
| MLA | Xing,Yi,et al."FERMI STUDY OF 5–300 GeV EMISSION FROM THE HIGH-MASS PULSAR BINARY PSR B1259-63/LS 2883".The Astrophysical Journal 828.1(2016). |
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来源：上海天文台
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