The Allowed Parameter Space of a Long-lived Neutron Star as the Merger Remnant of GW170817
文献类型：期刊论文
| 作者 | Ai,Shunke1; Gao,He1; Dai,Zi-Gao2,3; Wu,Xue-Feng4; Li,Ang5; Zhang,Bing6,7,8; Li,Mu-Zi1 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2018-06-12 |
| 卷号 | 860期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | gamma-ray burst: general gravitational waves |
| DOI | 10.3847/1538-4357/aac2b7 |
| 英文摘要 | Abstract Due to the limited sensitivity of the current gravitational wave (GW) detectors, the central remnant of the binary neutron star (NS) merger associated with GW170817 remains an open question. In view of the relatively large total mass, it is generally proposed that the merger of GW170817 would lead to a short-lived hypermassive NS or directly produce a black hole (BH). There is no clear evidence to support or rule out a long-lived NS as the merger remnant. Here, we utilize the GW and electromagnetic (EM) signals to comprehensively investigate the parameter space that allows a long-lived NS to survive as the merger remnant of GW170817. We find that for some stiff equations of state, the merger of GW170817 could, in principle, lead to a massive NS, which has a millisecond spin period. The post-merger GW signal could hardly constrain the ellipticity of the NS. If the ellipticity reaches 10?3, in order to be compatible with the multi-band EM observations, the dipole magnetic field of the NS (Bp) is constrained to the magnetar level of ～1014 G. If the ellipticity is smaller than 10?4, Bp is constrained to the level of ～109–1011 G. These conclusions weakly depend on the adoption of the NS equation of state. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-860-1-AAC2B7 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/21964]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.Department of Astronomy, Beijing Normal University, Beijing 100875, People's Republic of China; gaohe@bnu.edu.cn 2.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People's Republic of China; dzg@nju.edu.cn 3.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, People's Republic of China 4.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China; xfwu@pmo.ac.cn 5.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, People's Republic of China; liang@xmu.edu.cn 6.Department of Physics and Astronomy, University of Nevada Las Vegas, Las Vegas, NV 89154, USA; zhang@physics.unlv.edu 7.Department of Astronomy, School of Physics, Peking University, Beijing 100871, People's Republic of China 8.Kavli Institute of Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Ai,Shunke,Gao,He,Dai,Zi-Gao,et al. The Allowed Parameter Space of a Long-lived Neutron Star as the Merger Remnant of GW170817[J]. The Astrophysical Journal,2018,860(1). |
| APA | Ai,Shunke.,Gao,He.,Dai,Zi-Gao.,Wu,Xue-Feng.,Li,Ang.,...&Li,Mu-Zi.(2018).The Allowed Parameter Space of a Long-lived Neutron Star as the Merger Remnant of GW170817.The Astrophysical Journal,860(1). |
| MLA | Ai,Shunke,et al."The Allowed Parameter Space of a Long-lived Neutron Star as the Merger Remnant of GW170817".The Astrophysical Journal 860.1(2018). |
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来源：紫金山天文台
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