X-Ray Emission Evolution of the Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124 during the 2017–2018 Outburst Observed by the MAXI GSC
文献类型：期刊论文
| 作者 | Sugizaki,Mutsumi1,2; Oeda,Motoki2; Kawai,Nobuyuki2; Mihara,Tatehiro3; Makishima,Kazuo3,4; Nakajima,Motoki5 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 896期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | Neutron stars Binary pulsars Accretion High mass x-ray binary stars |
| DOI | 10.3847/1538-4357/ab93c7 |
| 英文摘要 | Abstract This paper reports on the X-ray emission evolution of the ultraluminous Galactic X-ray pulsar Swift J0243.6+6124 during the giant outburst from 2017 October to 2018 January as observed by the MAXI GSC all-sky survey. The 2–30 keV light curve and the energy spectra confirm the source luminosity LX assuming an isotropic emission reached 2.5?×?1039 erg s?1, 10 times higher than the Eddington limit for a 1.4 M⊙ neutron star. When the source was luminous with LX???0. 9?×?1038 erg s?1, it generally exhibited a negative correlation on a hardness-intensity diagram. However, two hardness ratios, a soft color (=4–10 keV/2–4 keV) and a hard color (=10–20 keV/4–10 keV), showed somewhat different behavior across a characteristic luminosity of Lc???5?×?1038 erg s?1. The soft color changed more than the hard color when LX? |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-896-2-AB93C7 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/63590]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Beijing 100012, People's Republic of China 2.Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan; mutsumi@nao.cas.cn 3.High Energy Astrophysics Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan 4.Kavli IPMU, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan 5.School of Dentistry at Matsudo, Nihon University, 2-870-1 Sakaecho-nishi, Matsudo, Chiba 101-8308, Japan |
| 推荐引用方式 GB/T 7714 | Sugizaki,Mutsumi,Oeda,Motoki,Kawai,Nobuyuki,et al. X-Ray Emission Evolution of the Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124 during the 2017–2018 Outburst Observed by the MAXI GSC[J]. The Astrophysical Journal,2020,896(2). |
| APA | Sugizaki,Mutsumi,Oeda,Motoki,Kawai,Nobuyuki,Mihara,Tatehiro,Makishima,Kazuo,&Nakajima,Motoki.(2020).X-Ray Emission Evolution of the Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124 during the 2017–2018 Outburst Observed by the MAXI GSC.The Astrophysical Journal,896(2). |
| MLA | Sugizaki,Mutsumi,et al."X-Ray Emission Evolution of the Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124 during the 2017–2018 Outburst Observed by the MAXI GSC".The Astrophysical Journal 896.2(2020). |
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