Dynamical Dark Energy in Light of Cosmic Distance Measurements.Ⅰ.A Demonstration Using Simulated Datasets  

作　　者：Gan Gu Xiaoma Wang Xiaoyong Mu Shuo Yuan Gong-Bo Zhao 

机构地区：[1]National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China

出　　处：《Research in Astronomy and Astrophysics》2024年第6期7-14,共8页天文和天体物理学研究（英文版）

基　　金：supported by the National Key R&D Program of China(2023YFA1607800,2023YFA1607803);the National Natural Science Foundation of China (NSFC,Grant Nos.11925303 and11890691);supported by the National Natural Science Foundation of China (NSFC,Grant No.12203062);by a CAS Project for Young Scientists in Basic Research (No.YSBR-092);supported by science research grants from the China Manned Space Project with No.CMS-CSST-2021-B01;supported by the New Cornerstone Science Foundation through the XPLORER prize。

摘　　要：We develop methods to extract key dark energy information from cosmic distance measurements including the BAO scales and supernova(SN) luminosity distances.Demonstrated using simulated data sets of the complete DESI,LSST and Roman surveys designed for BAO and SN distance measurements,we show that using our method,the dynamical behavior of the energy,pressure,equation of state(with its time derivative) of dark energy and the cosmic deceleration function can all be accurately recovered from high-quality data,which allows for robust diagnostic tests for dark energy models.

关 键 词：(cosmology:)dark energy (cosmology:)large scale structure of universe (cosmology:)cosmic background radiation (cosmology:)cosmological parameters 

分 类 号：P159[天文地球—天文学]