A Monte Carlo Approach to Magnetar-powered Transients. I. Hydrogen-deficient Superluminous Supernovae
文献类型：期刊论文
| 作者 | Liu,Liang-Duan1,4; Wang,Shan-Qin1,2,4; Wang,Ling-Jun3; Dai,Zi-Gao1,4; Yu,Hai1,4; Peng,Zong-Kai1,4 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2017-06-08 |
| 卷号 | 842期号:1 |
| 关键词 | stars: magnetars supernovae: general |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aa73d9 |
| 英文摘要 | Abstract In this paper we collect 19 hydrogen-deficient superluminous supernovae (SLSNe) and fit their light curves, temperature evolution, and velocity evolution based on the magnetar-powered model. To obtain the best-fitting parameters, we incorporate the Markov chain Monte Carlo approach. We get rather good fits for seven events (χ2/dof?=?0.24–0.96) and good fits for another seven events (χ2/dof?=?1.37–3.13). We find that the initial periods (P0) and magnetic strength (Bp) of the magnetars that supposedly power these SLSNe are in the range of ～1.2–8.3 ms and G, respectively; the inferred masses of the ejecta of these SLSNe are between 1 and , and the values of the gamma-ray opacity are between 0.01 and 0.82 cm2 g?1. We also calculate the fraction of the initial rotational energy of the magnetars harbored in the centers of the remnants of these SLSNe that is converted to the kinetic energy of the ejecta and find that the fraction is ～19%–97% for different values of P0 and Bp, indicating that the acceleration effect cannot be neglected. Moreover, we find that the initial kinetic energies of most of these SLSNe are so small ( erg) that they can be easily explained by the neutrino-driven mechanism. These results can help clarify some important issues related to the energy-source mechanisms and explosion mechanisms and reveal the nature of SLSNe. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-842-1-AA73D9 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/35980]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, China 2.Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA 3.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 4.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China; dzg@nju.edu.cn |
| 推荐引用方式 GB/T 7714 | Liu,Liang-Duan,Wang,Shan-Qin,Wang,Ling-Jun,et al. A Monte Carlo Approach to Magnetar-powered Transients. I. Hydrogen-deficient Superluminous Supernovae[J]. The Astrophysical Journal,2017,842(1). |
| APA | Liu,Liang-Duan,Wang,Shan-Qin,Wang,Ling-Jun,Dai,Zi-Gao,Yu,Hai,&Peng,Zong-Kai.(2017).A Monte Carlo Approach to Magnetar-powered Transients. I. Hydrogen-deficient Superluminous Supernovae.The Astrophysical Journal,842(1). |
| MLA | Liu,Liang-Duan,et al."A Monte Carlo Approach to Magnetar-powered Transients. I. Hydrogen-deficient Superluminous Supernovae".The Astrophysical Journal 842.1(2017). |
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来源：国家天文台
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