Parameter estimation of eccentric gravitational waves with a decihertz observatory and its cosmological implications
文献类型：期刊论文
| 作者 | Yang, Tao; Cai, Rong-Gen ; Cao, Zhoujian3,4; Lee, Hyung Mok
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2023 |
| 卷号 | 107期号:4页码:43539 |
| ISSN号 | 2470-0010 |
| 关键词 | BARYON ACOUSTIC-OSCILLATIONS BLACK-HOLE BINARIES GAMMA-RAY BURSTS HUBBLE CONSTANT COMPACT BINARIES GALACTIC NUCLEI GALAXIES LIGO 1ST |
| DOI | 10.1103/PhysRevD.107.043539 |
| 英文摘要 | Eccentricity of compact binaries can improve the parameter estimation of gravitational waves (GWs), which is due to the fact that the multiple harmonics induced by eccentricity can provide more information and break the degeneracy between waveform parameters. In this paper, we first investigate the parameter estimation of eccentric GWs with decihertz observatory. We consider two scenarios for the configuration of DECIGO, i.e., the one cluster of DECIGO with its design sensitivity and B-DECIGO which also has one cluster but with inferior sensitivity as a comparison. We adopt the Fisher matrix to estimate the parameter errors. By mocking up the typical binaries in GWTC-3, we find a nonvanishing eccentricity can significantly improve the estimation for almost all waveform parameters. In particular, the localization of typical binary black holes (BBH) can achieve O(10-103.5) factors of improvement when the initial eccentricity e0 = 0.4 at 0.1 Hz. The precise localization of binary neutron stars (BNS) and neutron star- black hole binaries (NSBH), together with the large improvement of localization of BBH from eccentricity in the midband, inspire us to construct the catalogs of golden dark sirens whose host galaxies can be uniquely identified. We find that with only one cluster of DECIGO running 1 year in its design sensitivity, hundreds of golden dark BNS, NSBH, and tens of golden dark BBH can be observed. Eccentricity can greatly increase the population of golden dark BBH from -7(e0 = 0) to -65(e0 = 0.2). Such an increase of population of golden dark BBH events can improve the precision of Hubble constant measurement from 2.06% to 0.68%, matter density parameter from 64% to 16% in ?CDM model. Through the phenomenological parametrization of GW propagation, the constraints of modified gravity can be improved from 6.2% to 1.6%. Our results show the remarkable significance of eccentricity for the detection and parameter estimation of GW events, allowing us to probe the Universe precisely. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28043]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Seoul Natl Univ, Ctr Gravitat Wave Universe, Astron Program Dept Phys & Astron, 1 Gwanak ro, Seoul, South Korea 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Univ Chinese Acad Sci, Hangzhou Inst Adv Study HIAS, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Tao,Cai, Rong-Gen,Cao, Zhoujian,et al. Parameter estimation of eccentric gravitational waves with a decihertz observatory and its cosmological implications[J]. PHYSICAL REVIEW D,2023,107(4):43539. |
| APA | Yang, Tao,Cai, Rong-Gen,Cao, Zhoujian,&Lee, Hyung Mok.(2023).Parameter estimation of eccentric gravitational waves with a decihertz observatory and its cosmological implications.PHYSICAL REVIEW D,107(4),43539. |
| MLA | Yang, Tao,et al."Parameter estimation of eccentric gravitational waves with a decihertz observatory and its cosmological implications".PHYSICAL REVIEW D 107.4(2023):43539. |
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来源：理论物理研究所
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