A New Consistency Test forΛCDM Cosmology Using Galaxy Surveys

作     者：Jinglan Zheng Gong-Bo Zhao Yuting Wang Xiaoyong Mu Ruiyang Zhao Weibing Zhang Shuo Yuan David Bacon Kazuya Koyama Jinglan Zheng;Gong-Bo Zhao;Yuting Wang;Xiaoyong Mu;Ruiyang Zhao;Weibing Zhang;Shuo Yuan;David Bacon;Kazuya Koyama

作者机构：National Astronomy ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space ScienceUniversity of Chinese Academy of SciencesBeijing 100049China Institute of Cosmology and GravitationUniversity of PortsmouthDennis Sciama BuildingPortsmouth PO13FXUK 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2022年第22卷第6期

页      面：183-189页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the Chinese Scholarship Council STFC supported by NSFC grants 11925303,11720101004 and 11890691 supported by NSFC Grant 11890691 by the Youth Innovation Promotion Association CAS by the Nebula Talents Program of NAOC supported by the National Key Basic Research and Development Program of China a grant of CAS Interdisciplinary Innovation Team the science research grants from the China Manned Space Project with No.CMS-CSST-2021-B01 

主　　题：Cosmology-(cosmology:)dark energy-galaxies distances and redshifts 

摘      要：We propose a new consistency test for theΛCDM cosmology using baryonic acoustic oscillations(BAO)and redshift space distortion(RSD)measurements from galaxy redshift ***,we determine the peak position of fσ8(z)in redshift z offered by an RSD measurement,and compare it to the one predicted by the BAO observables assuming a flatΛCDM *** demonstrate this new test using the simulated data for the DESI galaxy survey,and argue that this test complements those using the background observables alone,and is less subject to systematics in the RSD analysis,compared to traditional methods using values of fσ8(z)directly.