| A pulsar wind nebula model applied to short grb 050724 | |
| Lin,Wei-Li1,2; Wang,Ling-Jun3; Dai,Zi-Gao1,2 | |
| 刊名 | The astrophysical journal
 |
| 2018-03-08 | |
| 卷号 | 855期号:1 |
| 关键词 | Gamma-ray burst: general Radiation mechanisms: non-thermal Stars: neutron |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aaab68 |
| 英文摘要 | Abstract a subset of short gamma-ray bursts (sgrbs) have been found to be characterized by near-infrared/optical bumps at ～1 days, some of which exhibit almost concurrent x-ray flares. although the near-infrared/optical bumps may be a signature of kilonovae, the x-ray flares are not consistent with kilonovae. it is widely believed that sgrbs are produced by the mergers of double compact objects, during which sub-relativistic ejecta are launched. in this paper, we propose that the above optical/x-ray features are indicative of the formation of long-lived magnetars following the mergers of double neutron stars. observations and theoretical works imply that the spin-down power of the magnetars is injected into the ejecta as ultra-relativistic electron–positron pairs, i.e., pulsar wind nebulae (pwne). here, we suggest such a pwn model and find that the optical bump and x-ray flare observed in grb 050724 can be well understood in this pwn model. we show that the optical bump and x-ray flare may have different origins. our results strengthen the evidence for the formation of magnetars in double neutron star mergers and justify the validity of the pwn model. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-855-1-AAAB68 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2175748 |
| 专题 | 高能物理研究所 |
| 作者单位 | 1.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People's Republic of China; dzg@nju.edu.cn 2.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093, People's Republic of China 3.Astroparticle Physics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Lin,Wei-Li,Wang,Ling-Jun,Dai,Zi-Gao. A pulsar wind nebula model applied to short grb 050724[J]. The astrophysical journal,2018,855(1). |
| APA | Lin,Wei-Li,Wang,Ling-Jun,&Dai,Zi-Gao.(2018).A pulsar wind nebula model applied to short grb 050724.The astrophysical journal,855(1). |
| MLA | Lin,Wei-Li,et al."A pulsar wind nebula model applied to short grb 050724".The astrophysical journal 855.1(2018). |
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