Probing the Time Variation of the Effective Newton’s Constant with Optimal Redshift Weights
文献类型：期刊论文
| 作者 | Li,Jian3,4; Zhao,Gong-Bo1,2,4 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-05-21 |
| 卷号 | 877期号:1 |
| 关键词 | cosmological parameters cosmology: theory dark energy distance scale large-scale structure of universe |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab16eb |
| 英文摘要 | Abstract We propose a new method for probing the time variation of the effective Newton’s constant Geff, based on the optimal redshift weighting scheme, and demonstrate the efficacy using the DESI galaxy spectroscopic survey. We find that with the optimal redshift weights, the evolution of can be significantly better measured: the uncertainty of can be reduced by a factor of 2.2?～?12.8 using the DESI Bright Galaxy Survey sample at z???0.45, and by a factor of 1.3?～?4.4 using the DESI Emission Line Galaxies sample covering 0.65???z???1.65. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-877-1-AB16EB |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28885]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 3FX, UK 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China 3.University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China 4.National Astronomical Observatories, Chinese Academy of Science, Beijing, 100101, People's Republic of China; jli@nao.cas.cn, gbzhao@nao.cas.cn |
| 推荐引用方式 GB/T 7714 | Li,Jian,Zhao,Gong-Bo. Probing the Time Variation of the Effective Newton’s Constant with Optimal Redshift Weights[J]. The Astrophysical Journal,2019,877(1). |
| APA | Li,Jian,&Zhao,Gong-Bo.(2019).Probing the Time Variation of the Effective Newton’s Constant with Optimal Redshift Weights.The Astrophysical Journal,877(1). |
| MLA | Li,Jian,et al."Probing the Time Variation of the Effective Newton’s Constant with Optimal Redshift Weights".The Astrophysical Journal 877.1(2019). |
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来源：国家天文台
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