PMO OpenIR
SOLVING THE 56Ni PUZZLE OF MAGNETAR-POWERED BROAD-LINED TYPE IC SUPERNOVAE
Wang,Ling-Jun1; Han,Yan-Hui1; Xu,Dong1; Wang,Shan-Qin2,3; Dai,Zi-Gao2,3; Wu,Xue-Feng4,5; Wei,Jian-Yan1
2016-10-26
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume831Issue:1
AbstractABSTRACT Broad-lined Type Ic supernovae (SNe Ic-BL) are of great importance because their association with long-duration gamma-ray bursts (LGRBs) holds the key to deciphering the central engine of LGRBs, which refrains from being unveiled despite decades of investigation. Among the two popularly hypothesized types of central engine, i.e., black holes and strongly magnetized neutron stars (magnetars), there is mounting evidence that the central engine of GRB-associated SNe (GRB-SNe) is rapidly rotating magnetars. Theoretical analysis also suggests that magnetars could be the central engine of SNe Ic-BL. What puzzled the researchers is the fact that light-curve modeling indicates that as much as of 56Ni was synthesized during the explosion of the SNe Ic-BL, which is unfortunately in direct conflict with current state-of-the-art understanding of magnetar-powered 56Ni synthesis. Here we propose a dynamic model of magnetar-powered SNe to take into account the acceleration of the ejecta by the magnetar, as well as the thermalization of the injected energy. Assuming that the SN kinetic energy comes exclusively from the magnetar acceleration, we find that although a major fraction of the rotational energy of the magnetar is to accelerate the SN ejecta, a tiny fraction of this energy deposited as thermal energy of the ejecta is enough to reduce the needed 56Ni to 0.06?M⊙ for both SN 1997ef and SN 2007ru. We therefore suggest that magnetars could power SNe Ic-BL in aspects both of energetics and of 56Ni synthesis.
Keywordstars: neutron supernovae: general supernovae: individual (SN 1997ef, SN 2007ru)
DOI10.3847/0004-637X/831/1/41
Language英语
WOS IDIOP:0004-637X-831-1-41
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23745
Collection中国科学院紫金山天文台
Affiliation1.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; wanglj@nao.cas.cn, wjy@nao.cas.cn
2.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China; dzg@nju.edu.cn
3.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093, China
4.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210008, China
5.Joint Center for Particle Nuclear Physics and Cosmology of Purple Mountain Observatory-Nanjing University, Chinese Academy of Sciences, Nanjing 210008, China
Recommended Citation
GB/T 7714
Wang,Ling-Jun,Han,Yan-Hui,Xu,Dong,et al. SOLVING THE 56Ni PUZZLE OF MAGNETAR-POWERED BROAD-LINED TYPE IC SUPERNOVAE[J]. The Astrophysical Journal,2016,831(1).
APA Wang,Ling-Jun.,Han,Yan-Hui.,Xu,Dong.,Wang,Shan-Qin.,Dai,Zi-Gao.,...&Wei,Jian-Yan.(2016).SOLVING THE 56Ni PUZZLE OF MAGNETAR-POWERED BROAD-LINED TYPE IC SUPERNOVAE.The Astrophysical Journal,831(1).
MLA Wang,Ling-Jun,et al."SOLVING THE 56Ni PUZZLE OF MAGNETAR-POWERED BROAD-LINED TYPE IC SUPERNOVAE".The Astrophysical Journal 831.1(2016).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang,Ling-Jun]'s Articles
[Han,Yan-Hui]'s Articles
[Xu,Dong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang,Ling-Jun]'s Articles
[Han,Yan-Hui]'s Articles
[Xu,Dong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang,Ling-Jun]'s Articles
[Han,Yan-Hui]'s Articles
[Xu,Dong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.