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A Monte Carlo Approach to Magnetar-powered Transients. I. Hydrogen-deficient Superluminous Supernovae
Liu,Liang-Duan1,2; Wang,Shan-Qin1,2,3; Wang,Ling-Jun4; Dai,Zi-Gao1,2; Yu,Hai1,2; Peng,Zong-Kai1,2
2017-06-08
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume842Issue:1
AbstractAbstract 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.
Keywordstars: magnetars supernovae: general
DOI10.3847/1538-4357/aa73d9
Language英语
WOS IDIOP:0004-637X-842-1-aa73d9
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/35981
Collection中国科学院国家天文台
Affiliation1.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China; dzg@nju.edu.cn
2.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, China
3.Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA
4.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
Recommended Citation
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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