Evidence for Magnetar Formation in Broad-lined Type Ic Supernovae1998bw and 2002ap

doi:10.3847/1538-4357/aa5ff5

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	Evidence for Magnetar Formation in Broad-lined Type Ic Supernovae1998bw and 2002ap
	Wang,L. J.3; Yu,H.1,4; Liu,L. D.1,4; Wang,S. Q.1,2,4; Han,Y. H.3; Xu,D.3; Dai,Z. G.1,4; Qiu,Y. L.3; Wei,J. Y.3
刊名	The Astrophysical Journal
	2017-03-10
卷号	837 期号:2
关键词	stars: neutron supernovae: general supernovae: individual (SNe 1998bw, 2002ap)
ISSN号	0004-637X
DOI	10.3847/1538-4357/aa5ff5
英文摘要	Abstract Broad-lined type Ic supernovae (SNe Ic-BL) are peculiar stellar explosions that are distinct from ordinary SNe. Some SNe Ic-BL are associated with long-duration ( ) gamma-ray bursts (GRBs). Black holes and magnetars are two types of compact objects that are hypothesized to be central engines of GRBs. In spite of decades of investigations, no direct evidence for the formation of black holes or magnetars has yet been found for GRBs. Here we report the finding that the early peak ( ) and late-time ( ) slow decay displayed in the light curves of SNe 1998bw (associated with GRB 980425) and 2002ap (not GRB-associated) can be attributed to magnetar spin-down with an initial rotation period , while the intermediate-time ( ) exponential decline is caused by the radioactive decay of 56Ni. The connection between the early peak and late-time slow decline in the light curves is unexpected in alternative models. We thus suggest that GRB 980425 and SN 2002ap were powered by magnetars.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-837-2-AA5FF5
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/36089]
专题	中国科学院国家天文台
作者单位	1.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China; dzg@nju.edu.cn 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;wanglj@nao.cas.cn, wjy@nao.cas.cn 4.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093, China
推荐引用方式 GB/T 7714	Wang,L. J.,Yu,H.,Liu,L. D.,et al. Evidence for Magnetar Formation in Broad-lined Type Ic Supernovae1998bw and 2002ap[J]. The Astrophysical Journal,2017,837(2).
APA	Wang,L. J..,Yu,H..,Liu,L. D..,Wang,S. Q..,Han,Y. H..,...&Wei,J. Y..(2017).Evidence for Magnetar Formation in Broad-lined Type Ic Supernovae1998bw and 2002ap.The Astrophysical Journal,837(2).
MLA	Wang,L. J.,et al."Evidence for Magnetar Formation in Broad-lined Type Ic Supernovae1998bw and 2002ap".The Astrophysical Journal 837.2(2017).