BRIGHT BROADBAND AFTERGLOWS OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS
文献类型：期刊论文
| 作者 | Gao, He1,2; Ding, Xuan1; Wu, Xue-Feng1,3,4 ; Zhang, Bing2,5,6; Dai, Zi-Gao7
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2013-07-10 |
| 卷号 | 771期号:2页码:0 |
| 关键词 | gravitational waves hydrodynamics radiation mechanisms: non-thermal shock waves stars: magnetars stars: neutron |
| ISSN号 | 0004-637X |
| 通讯作者 | Gao, H (reprint author), Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China. Email: xfwu@pmo.ac.cn ; zhang@physics.unlv.edu ; dzg@nju.edu.cn |
| 英文摘要 | If double neutron star mergers leave behind a massive magnetar rather than a black hole, then a bright early afterglow can follow the gravitational wave burst (GWB) even if there is no short gamma-ray burst (SGRB)-GWB association or if there is an association but the SGRB does not beam toward Earth. Besides directly dissipating the proto-magnetar wind, as suggested by Zhang, here we suggest that the magnetar wind could push the ejecta launched during the merger process and, under certain conditions, would reach a relativistic speed. Such a magnetar-powered ejecta, when interacting with the ambient medium, would develop a bright broadband afterglow due to synchrotron radiation. We study this physical scenario in detail and present the predicted X-ray, optical, and radio light curves for a range of magnetar and ejecta parameters. We show that the X-ray and optical light curves usually peak around the magnetar spin-down timescale (similar to 10(3)-10(5) s), reaching brightnesses readily detectable by wide-field X-ray and optical telescopes, and remain detectable for an extended period. The radio afterglow peaks later, but is much brighter than the case without a magnetar energy injection. Therefore, such bright broadband afterglows, if detected and combined with GWBs in the future, would be a probe of massive millisecond magnetars and stiff equations of state for nuclear matter. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | GAMMA-RAY BURSTS ; COMPACT OBJECT MERGERS ; EARLY X-RAY ; ENERGY INJECTION ; MILLISECOND MAGNETAR ; GENERAL-RELATIVITY ; LIGHT CURVES ; FLARES ; PULSAR ; MODEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000321340700011 |
| 公开日期 | 2014-01-08 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/9886]  |
| 专题 | 紫金山天文台_宇宙伽马暴、中子星及相关物理研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA 3.Chinese Acad Sci, Chinese Ctr Antarctic Astron, Nanjing 210008, Jiangsu, Peoples R China 4.Nanjing Univ, Joint Ctr Particle Nucl Phys & Cosmol, Purple Mt Observ, Chinese Acad Sci, Nanjing 210008, Jiangsu, Peoples R China 5.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 6.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 7.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, He,Ding, Xuan,Wu, Xue-Feng,et al. BRIGHT BROADBAND AFTERGLOWS OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS[J]. ASTROPHYSICAL JOURNAL,2013,771(2):0. |
| APA | Gao, He,Ding, Xuan,Wu, Xue-Feng,Zhang, Bing,&Dai, Zi-Gao.(2013).BRIGHT BROADBAND AFTERGLOWS OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS.ASTROPHYSICAL JOURNAL,771(2),0. |
| MLA | Gao, He,et al."BRIGHT BROADBAND AFTERGLOWS OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS".ASTROPHYSICAL JOURNAL 771.2(2013):0. |
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来源：紫金山天文台
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