PMO OpenIR  > 南极天文中心
SIGNATURE OF A SPIN-UP MAGNETAR FROM MULTI-BAND AFTERGLOW REBRIGHTENING OF GRB 100814A
Yu, Y. B.1,2; Huang, Y. F.1,2; Wu, X. F.3,4,5; Xu, M.6; Geng, J. J.1,2
2015-06-01
Source PublicationASTROPHYSICAL JOURNAL
Volume805Issue:2Pages:88
AbstractIn recent years, more and more gamma-ray bursts (GRBs) with late rebrightenings in their multi-band afterglows have revealed the late-time activity of their central engines. GRB 100814A is a special case among the well-sampled events, with complex temporal and spectral evolution. The single power-law shallow decay index of the optical light curve observed by GROND between 640 s and 10 ks is alpha(opt) = 0.57 +/- 0.02, which apparently conflicts with expectations from the simple external shock model. In particular, there is remarkable rebrightening in the optical to near-infrared bands at late times, challenging the external shock model with synchrotron emission coming from the interaction of the blast wave with the surrounding interstellar medium. In this paper, we invoke a magnetar with spin evolution to explain the complex multi-band afterglow emission of GRB 100814A. The initial shallow decay phase in the optical bands and the plateau in the X-ray can be explained as being due to energy injection from a spin-down magnetar. At late times, with materials from the fall-back disk falling onto the central object of the burster, the angular momentum of the accreted materials is transferred to the magnetar, which leads to a spin up process. As a result, the magnetic dipole radiation luminosity will increase, resulting in significant rebrightening of the optical afterglow. We show that the model can well reproduce the observed multi-band afterglow emission.
KeywordGamma-ray Burst: General Ism: Individual Objects (Grb 100814a) Ism: Jets And Outflows
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/805/2/88
WOS KeywordGAMMA-RAY BURST ; RELATIVISTIC WIND BUBBLES ; ENERGY INJECTION ; CENTRAL ENGINE ; NEUTRON-STAR ; LIGHT CURVES ; MILLISECOND PULSARS ; SWIFT OBSERVATIONS ; DYNAMICAL MODEL ; FIREBALL MODEL
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000356715400003
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/14883
Collection南极天文中心
Affiliation1.Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China
2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing, Jiangsu, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
4.Chinese Acad Sci, Chinese Ctr Antarct Astron, Nanjing 210008, Jiangsu, Peoples R China
5.Chinese Acad Sci, Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210008, Jiangsu, Peoples R China
6.Normal Univ, Dept Phys Jiangxi Sci & Technol, Normal 330013, Peoples R China
Recommended Citation
GB/T 7714
Yu, Y. B.,Huang, Y. F.,Wu, X. F.,et al. SIGNATURE OF A SPIN-UP MAGNETAR FROM MULTI-BAND AFTERGLOW REBRIGHTENING OF GRB 100814A[J]. ASTROPHYSICAL JOURNAL,2015,805(2):88.
APA Yu, Y. B.,Huang, Y. F.,Wu, X. F.,Xu, M.,&Geng, J. J..(2015).SIGNATURE OF A SPIN-UP MAGNETAR FROM MULTI-BAND AFTERGLOW REBRIGHTENING OF GRB 100814A.ASTROPHYSICAL JOURNAL,805(2),88.
MLA Yu, Y. B.,et al."SIGNATURE OF A SPIN-UP MAGNETAR FROM MULTI-BAND AFTERGLOW REBRIGHTENING OF GRB 100814A".ASTROPHYSICAL JOURNAL 805.2(2015):88.
Files in This Item:
File Name/Size DocType Version Access License
2015056.pdf(288KB) 开放获取Apache LicenseView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yu, Y. B.]'s Articles
[Huang, Y. F.]'s Articles
[Wu, X. F.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yu, Y. B.]'s Articles
[Huang, Y. F.]'s Articles
[Wu, X. F.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yu, Y. B.]'s Articles
[Huang, Y. F.]'s Articles
[Wu, X. F.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2015056.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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