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题名: PROBING THE BIRTH OF POST-MERGER MILLISECOND MAGNETARS WITH X-RAY AND GAMMA-RAY EMISSION
作者: Wang, Ling-Jun1, 2, 3; Dai, Zi-Gao2, 3; Liu, Liang-Duan2, 3; Wu XueFeng(吴雪峰)4, 5
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2016-05-20
卷号: 823, 期号:1
关键词: gamma-ray burst: general ; radiation mechanisms: non-thermal ; stars: neutron
DOI: 10.3847/0004-637X/823/1/15
文章类型: Article
英文摘要: There is growing evidence that a stable magnetar could be formed from the coalescence of double neutron stars. In previous papers, we investigated the signature of formation of stable millisecond magnetars in radio and optical/ultraviolet bands by assuming that the central rapidly rotating magnetar deposits its rotational energy in the form of a relativistic leptonized wind. We found that the optical transient PTF11agg could be the first evidence for the formation of post-merger millisecond magnetars. To enhance the probability of finding more evidence for the postmerger magnetar formation, it is better to extend the observational channel to other photon energy bands. In this paper, we propose to search the signature of post-merger magnetar formation in X-ray and especially gamma-ray bands. We calculate the synchrotron self-Compton (SSC) emission of the reverse shock powered by post-merger millisecond magnetars. We find that the SSC component peaks at 1 GeV in the spectral energy distribution and extends to greater than or similar to 10 TeV for typical parameters. These energy bands are quite suitable for Fermi Large Area Telescope and Cherenkov Telescope Array (CTA), which, with their current observational sensitivities, can detect the SSC emission powered by post-merger magnetars up to1 Gpc. NuSTAR, which is sensitive in X-ray bands, can detect the formation of post-merger millisecond magnetars at redshift z similar to 1. Future improvements in the sensitivity of CTA can also allow us to probe the birth of post-merger millisecond magnetars at redshift z similar to 1. However, because of the gamma-gamma collisions, strong high-energy emission is clearly predicted only for ejecta masses lower than 10(-3) M-circle dot.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: PULSAR-WIND NEBULAE ; NEUTRON-STAR MERGERS ; COMPACT OBJECT MERGERS ; ACCRETION-INDUCED COLLAPSE ; REVERSE SHOCK EMISSION ; GRAVITATIONAL-WAVE BURSTS ; R-PROCESS NUCLEOSYNTHESIS ; SUPERNOVA LIGHT CURVES ; LARGE-AREA TELESCOPE ; WHITE-DWARF MODELS
收录类别: SCI
项目资助者: National Basic Research Program ("973" Program) of China(2014CB845800 ; National Natural Science Foundation of China(11573014 ; Youth Innovation Promotion Association(2011231) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; 2013CB834900) ; U1331202 ; 11322328)
语种: 英语
WOS记录号: WOS:000377216300015
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16230
Appears in Collections:南极天文中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China
2.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
3.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China
4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
5.Joint Ctr Particle Nucl Phys & Cosmol Purple Mt O, Chinese Acad Sci, Nanjing 210008, Jiangsu, Peoples R China
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