Strongly lensed gravitational waves and electromagnetic signals as powerful cosmic rulers
文献类型:期刊论文
作者 | Wei, Jun-Jie1,2; Wu, Xue-Feng1,3,4 |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
出版日期 | 2017-12-01 |
卷号 | 472期号:3页码:2906-2912 |
ISSN号 | 0035-8711 |
关键词 | gravitational lensing: strong gravitational waves cosmological parameters dark energy distance scale |
DOI | 10.1093/mnras/stx2210 |
英文摘要 | In this paper, we discuss the possibility of using strongly lensed gravitational waves (GWs) and their electromagnetic (EM) counterparts as powerful cosmic rulers. In the EM domain, it has been suggested that joint observations of the time delay (Delta tau) between lensed quasar images and the velocity dispersion (sigma) of the lensing galaxy (i.e. the combination Delta tau/sigma(2)) are able to constrain the cosmological parameters more strongly than Delta tau or sigma(2) separately. Here, for the first time, we propose that this Delta tau/sigma(2) method can be applied to the strongly lensed systems observed in both GW and EM windows. Combining the redshifts, images and sigma observed in the EM domain with the very precise Delta tau derived from lensed GW signals, we expect that accurate multimessenger cosmology can be achieved in the era of third-generation GW detectors. Comparing with the constraints from the Delta tau method, we prove that using Delta tau/sigma(2) can improve the discrimination between cosmological models. Furthermore, we demonstrate that with similar to 50 strongly lensed GW-EM systems, we can reach a constraint on the dark energy equation of state w comparable to the 580 Union2.1 Type Ia supernovae data. Much more stringent constraints on w can be obtained when combining the Delta tau and Delta tau/sigma(2) methods. |
WOS关键词 | BARYON ACOUSTIC-OSCILLATIONS ; EQUATION-OF-STATE ; HUBBLE CONSTANT ; TIME DELAYS ; COSMOLOGICAL CONSTRAINTS ; LENSING SYSTEMS ; GALAXIES ; UNIVERSE ; SUPERNOVAE ; MODEL |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000413088400034 |
源URL | [http://libir.pmo.ac.cn/handle/332002/22781] |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Wei, Jun-Jie; Wu, Xue-Feng |
作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China 3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China 4.Nanjing Univ, Joint Ctr Particle Nucl Phys & Cosmol, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wei, Jun-Jie,Wu, Xue-Feng. Strongly lensed gravitational waves and electromagnetic signals as powerful cosmic rulers[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,472(3):2906-2912. |
APA | Wei, Jun-Jie,&Wu, Xue-Feng.(2017).Strongly lensed gravitational waves and electromagnetic signals as powerful cosmic rulers.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,472(3),2906-2912. |
MLA | Wei, Jun-Jie,et al."Strongly lensed gravitational waves and electromagnetic signals as powerful cosmic rulers".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 472.3(2017):2906-2912. |
入库方式: OAI收割
来源:紫金山天文台
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。