中国科学院紫金山天文台机构知识库
Advanced  
PMO OpenIR  > 南极天文中心  > 期刊论文
题名: SIGNATURE OF A SPIN-UP MAGNETAR FROM MULTI-BAND AFTERGLOW REBRIGHTENING OF GRB 100814A
作者: Yu, Y. B.1, 2; Huang, Y. F.1, 2; Wu, X. F.3, 4, 5; Xu, M.6; Geng, J. J.1, 2
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2015-06-01
卷号: 805, 期号:2, 页码:88
关键词: gamma-ray burst: general ; ISM: individual objects (GRB 100814A) ; ISM: jets and outflows
学科分类: 天文和天体物理
DOI: 10.1088/0004-637X/805/2/88
文章类型: Article
英文摘要: In 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.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: GAMMA-RAY BURST ; RELATIVISTIC WIND BUBBLES ; ENERGY INJECTION ; CENTRAL ENGINE ; NEUTRON-STAR ; LIGHT CURVES ; MILLISECOND PULSARS ; SWIFT OBSERVATIONS ; DYNAMICAL MODEL ; FIREBALL MODEL
收录类别: SCI
所属项目名称: PMO_LIB-IR
语种: 英语
WOS记录号: WOS:000356715400003
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/14883
Appears in Collections:南极天文中心_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
2015056.pdf(288KB)----限制开放View 联系获取全文

作者单位: 1.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
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Yu, Y. B.]'s Articles
[Huang, Y. F.]'s Articles
[Wu, X. F.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Yu, Y. B.]‘s Articles
[Huang, Y. F.]‘s Articles
[Wu, X. F.]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 2015056.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

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

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院紫金山天文台 - Feedback
Powered by CSpace