Swift Observations of SMC X-3 during Its 2016-2017 Super-Eddington Outburst
文献类型：期刊论文
| 作者 | Weng, Shan-Shan1,2; Ge, Ming-Yu3; Zhao, Hai-Hui1,2; Wang, Wei4,5; Zhang, Shuang-Nan3,5,6; Bian, Wei-Hao1,2; Yuan, Qi-Rong1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2017-07-01 |
| 卷号 | 843期号:1 |
| 关键词 | accretion, accretion disks pulsars: general stars: neutron X-rays: binaries X-rays: individual (SMC X-3) |
| 英文摘要 | The Be X-ray pulsar SMC X-3 underwent a giant outburst from 2016 August to 2017 March, which was monitored with the Swift satellite. During the outburst, its broadband flux increased dramatically, and the unabsorbed X-ray luminosity reached an extreme value of similar to 10(39) erg s(-1) around August 24. Using the Swift/XRT data, we measured the observed pulse frequency of the neutron star to compute the orbital parameters of the binary system. After applying the orbital corrections to Swift observations, we found that the spin frequency increased steadily from 128.02 mHz on August 10 and approached the spin equilibrium of similar to 128.74 mHz in 2017 January with an unabsorbed luminosity of L-X similar to 2 x 10(37) erg s(-1), indicating a strong dipolar magnetic field of B similar to 6.8 x 10(12) G at the neutron star surface. The spin-up rate is tightly correlated with its X-ray luminosity during the super-Eddington outburst. The pulse profile in the Swift/XRT data is variable, showing double peaks at the early stage of outburst and then merging into a single peak at low luminosity. Additionally, we report that a low-temperature (kT similar to 0.2 keV) thermal component emerges in the phase-averaged spectra as the flux decays, and it may be produced from the outer truncated disk or the boundary layer between the exterior flow and the magnetosphere. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SMALL-MAGELLANIC-CLOUD ; X-RAY BINARIES ; MAGNETIZED NEUTRON-STARS ; NUSTAR J095551+6940.8 ; ACCRETION LUMINOSITY ; ECLIPSING BINARIES ; GIANT OUTBURST ; MILKY-WAY ; PULSARS ; EVOLUTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000404847500005 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8816]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Nanjing Normal Univ, Dept Phys, Nanjing 210023, Jiangsu, Peoples R China 2.Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210023, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 4.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 6.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Weng, Shan-Shan,Ge, Ming-Yu,Zhao, Hai-Hui,et al. Swift Observations of SMC X-3 during Its 2016-2017 Super-Eddington Outburst[J]. ASTROPHYSICAL JOURNAL,2017,843(1). |
| APA | Weng, Shan-Shan.,Ge, Ming-Yu.,Zhao, Hai-Hui.,Wang, Wei.,Zhang, Shuang-Nan.,...&Yuan, Qi-Rong.(2017).Swift Observations of SMC X-3 during Its 2016-2017 Super-Eddington Outburst.ASTROPHYSICAL JOURNAL,843(1). |
| MLA | Weng, Shan-Shan,et al."Swift Observations of SMC X-3 during Its 2016-2017 Super-Eddington Outburst".ASTROPHYSICAL JOURNAL 843.1(2017). |
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来源：国家天文台
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