中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 大样本恒星演化研究组
Cosmological distance forecasts for the CSST Galaxy Survey using BAO peaks

文献类型：期刊论文

作者Shi, Feng15,16; Tian, Jieyi15,16; Ding, Zhejie14; Yang, Xiaohu12,13; Gu, Yizhou12,13; Saulder, Christoph10,11; Li, Xiaoping15,16; Liu, Yanming15,16; Wang, Zitong15,16; Zhan, Hu8,9
刊名SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
出版日期2025-04
卷号68期号:4
关键词large-scale structure distance scale cosmology
ISSN号1674-7348
DOI10.1007/s11433-024-2603-8
产权排序第12完成单位
文献子类Article
英文摘要The measurement of cosmological distances using baryon acoustic oscillations (BAO) is crucial for studying the universe's expansion. The China Space Station Telescope (CSST) galaxy redshift survey, with its vast volume and sky coverage, provides an opportunity to address key challenges in cosmology. However, redshift uncertainties in galaxy surveys can degrade both angular and radial distance estimates. In this study, we forecast the precision of BAO distance measurements using mock CSST galaxy samples, applying a two-point correlation function (2PCF) wedge approach to mitigate redshift errors. We simulate redshift uncertainties of sigma(0) = 0.003 and sigma(0) = 0.006, representative of expected CSST errors, and examine their effects on the BAO peak and distance scaling factors,alpha(perpendicular to) and alpha(parallel to), across redshift bins within 0.0 < z <= 1.0. The wedge 2PCF method proves more effective in detecting the BAO peak compared with the monopole 2PCF, particularly for sigma(0) = 0.006. Constraints on the BAO peaks show that alpha(perpendicular to )is well constrained around 1.0, regardless of sigma(0) , with precision between 1% and 3% across redshift bins. In contrast, alpha(parallel to) measurements are more sensitive to increases in sigma(0) . For sigma(0) = 0.003, the results remain close to the fiducial value, with uncertainties ranging between 4% and 9%; for sigma(0) = 0.006, significant deviations from the fiducial value are observed. We also study the ability to measure parameters (Omega m, H0rd) using distance measurements, proving robust constraints as a cosmological probe under CSST-like redshift uncertainties. These findings demonstrate that the CSST survey enables few-percent precision measurements of DA using the wedge 2PCF method, highlighting its potential to place tight constraints on the universe's expansion history and contribute to high-precision cosmological studies.
学科主题天文学 ; 星系与宇宙学
URL标识查看原文
出版地16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
WOS关键词OSCILLATION SPECTROSCOPIC SURVEY ; BARYON ACOUSTIC-OSCILLATIONS ; DARK ENERGY ; REDSHIFT SURVEY ; POWER-SPECTRUM ; GROWTH-RATE ; COVARIANCE ; EVOLUTION ; RECONSTRUCTION ; CONSTRAINTS
资助项目National SKA Program of China[2022SKA0110200]; National SKA Program of China[2022SKA0110202]; National Key Research and Development Program of China[2023YFA1607800]; National Key Research and Development Program of China[2023YFA1607802]; National Key Research and Development Program of China[2023YFA1607804]; National Key Research and Development Program of China[2022YFF0503400]; National Natural Science Foundation of China[12103037]; National Natural Science Foundation of China[12273020]; The 111 Project[B20019]; Shanghai Natural Science Foundation[19ZR1466800]; China Manned Space Project[CMS-CSST-2021-A02]; China Manned Space Project[CMS-CSST-2021-A03]; China Manned Space Project[CMS-CSST-2021-B01]; Fundamental Research Funds for the Central Universities[XJS221312]; Science Research Project of Hebei Education Department[BJK2024134]; High-Performance Computing Platform of Xidian University
WOS研究方向Physics
语种英语
WOS记录号WOS:001439701200001
出版者SCIENCE PRESS
资助机构National SKA Program of China[2022SKA0110200, 2022SKA0110202] ; National Key Research and Development Program of China[2023YFA1607800, 2023YFA1607802, 2023YFA1607804, 2022YFF0503400] ; National Natural Science Foundation of China[12103037, 12273020] ; The 111 Project[B20019] ; Shanghai Natural Science Foundation[19ZR1466800] ; China Manned Space Project[CMS-CSST-2021-A02, CMS-CSST-2021-A03, CMS-CSST-2021-B01] ; Fundamental Research Funds for the Central Universities[XJS221312] ; Science Research Project of Hebei Education Department[BJK2024134] ; High-Performance Computing Platform of Xidian University
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28189]  
专题云南天文台_大样本恒星演化研究组
作者单位1.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210023, China;
2.Tsung-Dao Lee Institute and Key Laboratory for Particle Physics, Astrophysics and Cosmology, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 201210, China
3.School of Astronomy and Space Sciences, University of Science and Technology of China, Hefei, 230026, China;
4.Department of Astronomy, Tsinghua University, Beijing, 100084, China;
5.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China;
6.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Shanghai, 200030, China;
7.College of Physics, Hebei Normal University, Shijiazhuang, 050024, China;
8.The Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, 100871, China;
9.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China;
10.Universitäts-Sternwarte München, Munich, 81679, Germany;
推荐引用方式
GB/T 7714		 Shi, Feng,Tian, Jieyi,Ding, Zhejie,et al. Cosmological distance forecasts for the CSST Galaxy Survey using BAO peaks[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2025,68(4).
APA Shi, Feng.,Tian, Jieyi.,Ding, Zhejie.,Yang, Xiaohu.,Gu, Yizhou.,...&Zhou, Xingchen.(2025).Cosmological distance forecasts for the CSST Galaxy Survey using BAO peaks.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,68(4).
MLA Shi, Feng,et al."Cosmological distance forecasts for the CSST Galaxy Survey using BAO peaks".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 68.4(2025).

入库方式： OAI收割

来源：云南天文台

浏览0
下载0
收藏0
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。