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相关论文: The redshift dependence of Alcock-Paczynski effect…

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The apparent shape of galaxy clustering depends on the adopted cosmology used to convert observed redshift to comoving distance, the $r(z)$ relation, as it changes the line elements along and across the line of sight differently. The…

宇宙学与河外天体物理 · 物理学 2023-08-16 Fuyu Dong , Changbom Park , Sungwook E. Hong , Juhan Kim , Ho Seong Hwang , Hyunbae Park , Stephen Appleby

The tomographic Alcock-Paczynski (AP) method utilizes the redshift evolution of the AP distortion to place constraints on cosmological parameters. It has proved to be a robust method that can separate the AP signature from the redshift…

宇宙学与河外天体物理 · 物理学 2020-01-08 Xiaolin Luo , Ziyong Wu , Xiao-Dong Li , Miao Li , Zhigang Li , Cristiano G. Sabiu

The tomographic Alcock-Paczynski(AP) method, developed over the past decade, exploits redshift evolution for cosmological determination, aiming to mitigate contamination from redshift distortions and capture nonlinear scale information.…

宇宙学与河外天体物理 · 物理学 2026-04-20 Liang Xiao , Limin Lai , Zhujun Jiang , Xiao-Dong Li , Le Zhang

The tomographic Alcock-Paczynski (AP) method can result in tight cosmological constraints by using small and intermediate clustering scales of the large scale structure (LSS) of the galaxy distribution. By focusing on the redshift…

宇宙学与河外天体物理 · 物理学 2019-06-26 Zhenyu Zhang , Gan Gu , Xiaoma Wang , Yun-He Li , Cristiano G. Sabiu , Hyunbae Park , Haitao Miao , Xiaolin Luo , Feng Fang , Xiao-Dong Li

The tomographic Alcock-Paczynski (AP) method is a promising method that uses the redshift evolution of the anisotropic clustering in redshift space to calibrate cosmology. It extends the applicable range of AP method to substantially…

宇宙学与河外天体物理 · 物理学 2022-12-28 Liang Xiao , Zhiqi Huang , Yi Zheng , Xin Wang , Xiaodong Li

The tomographic AP method is so far the best method in separating the Alcock-Paczynski (AP) signal from the redshift space distortion (RSD) effects and deriving powerful constraints on cosmological parameters using the $\lesssim40h^{-1}\…

宇宙学与河外天体物理 · 物理学 2020-06-11 Qinglin Ma , Yiqing Guo , Xiao-Dong Li , Xin Wang , Haitao Miao , Zhigang Li , Cristiano G. Sabiu , Hyunbae Park

We apply the methodology developed in \cite{Li2014,Li2015} to BOSS DR12 galaxies and derive cosmological constraints from the redshift dependence of the Alcock-Paczynski (AP) effect. The apparent anisotropy in the distribution of observed…

宇宙学与河外天体物理 · 物理学 2016-12-07 Xiao-Dong Li , Changbom Park , Cristiano G. Sabiu , Hyunbae Park , David H. Weinberg , Donald P. Schneider , Juhan Kim , Sungwook E. Hong

We present a large-scale Bayesian inference framework to constrain cosmological parameters using galaxy redshift surveys, via an application of the Alcock-Paczy\'nski (AP) test. Our physical model of the non-linearly evolved density field,…

宇宙学与河外天体物理 · 物理学 2019-03-27 Doogesh Kodi Ramanah , Guilhem Lavaux , Jens Jasche , Benjamin D. Wandelt

Cosmological tests based on the statistical analysis of galaxy distributions usually depend on source evolution. An exception is the Alcock-Paczynski (AP) test, which is based on the changing ratio of angular to spatial/redshift size of…

宇宙学与河外天体物理 · 物理学 2018-09-25 Fulvio Melia , Martin Lopez-Corredoira

We develop an improved Alcock-Paczynski (AP) test method that uses the redshift-space two-point correlation function (2pCF) of galaxies. Cosmological constraints can be obtained by examining the redshift dependence of the normalized 2pCF,…

宇宙学与河外天体物理 · 物理学 2019-09-04 Hyunbae Park , Changbom Park , Cristiano G. Sabiu , Xiao-dong Li , Sungwook E. Hong , Juhan Kim , Motonari Tonegawa , Yi Zheng

The geometry of the Universe may be probed using the Alcock-Paczynski (AP) effect, in which the observed redshift size of a spherical distribution of sources relative to its angular size varies according to the assumed cosmological model.…

宇宙学与河外天体物理 · 物理学 2021-03-10 Fulvio Melia , Jin Qin , Tong-Jie Zhang

We propose a method using the redshift dependence of the Alcock-Paczynski (AP) test and volume effect to measure the cosmic expansion history. The galaxy two-point correlation function as a function of angle, $\xi(\mu)$, is measured at…

宇宙学与河外天体物理 · 物理学 2015-07-07 Xiao-Dong Li , Changbom Park , Cristiano G. Sabiu , Juhan Kim

We report a tight Hubble constant constraint $67.78^{+1.21}_{-1.86}$ km s$^{-1}$ Mpc$^{-1}$ (2.26\% precision) derived from galaxy redshift surveys. We combine the BAO measurements from 6dFGS, the SDSS DR7 main galaxies, the BOSS DR12…

宇宙学与河外天体物理 · 物理学 2018-12-05 Xue Zhang , Qing-Guo Huang , Xiao-Dong Li

We apply an extended Alcock-Paczy\'nski (AP) test to the Sloan Digital Sky Survey data to constrain the dark energy models with the Chevallier-Polarski-Linder (CPL) parametrization of the dark energy equation of state. The extended AP test…

宇宙学与河外天体物理 · 物理学 2025-12-12 Fuyu Dong , Changbom Park

The Alcock-Paczynski (AP) effect is a geometrical distortion in three-dimensional observed galaxy statistics. In anticipation of precision cosmology based on ongoing and upcoming all-sky galaxy surveys, we build an efficient method to…

宇宙学与河外天体物理 · 物理学 2021-06-17 Maresuke Shiraishi , Kazuyuki Akitsu , Teppei Okumura

We propose a method based on the redshift dependence of the Alcock-Paczynski (AP) test to measure the expansion history of the Universe. It uses the isotropy of the galaxy density gradient field to constrain cosmological parameters. If the…

宇宙学与河外天体物理 · 物理学 2015-11-30 Xiao-Dong Li , Changbom Park , Jaime E. Forero-Romero , Juhan Kim

We investigate the Alcock Paczynski (AP) test applied to the Baryon Acoustic Oscillation (BAO) feature in the galaxy correlation function. By using a general formalism that includes relativistic effects, we quantify the importance of the…

宇宙学与河外天体物理 · 物理学 2017-02-27 Francesca Lepori , Enea Di Dio , Matteo Viel , Carlo Baccigalupi , Ruth Durrer

Recent development of galaxy surveys enables us to investigate the deep universe of high redshift. We quantitatively present the physical information extractable from the observable correlation function in deep redshift space in a framework…

天体物理学 · 物理学 2009-11-10 Takahiko Matsubara

We apply the Alcock-Paczynski (AP) test to the stacked voids identified using the large-scale structure galaxy catalog from the Baryon Oscillation Spectroscopic Survey (BOSS). This galaxy catalog is part of the Sloan Digital Sky Survey…

We perform an anisotropic clustering analysis of 1,133,326 galaxies from the Sloan Digital Sky Survey (SDSS-III) Baryon Oscillation Spectroscopic Survey (BOSS) Data Release (DR) 12 covering the redshift range $0.15<z<0.69$. The geometrical…

宇宙学与河外天体物理 · 物理学 2018-04-05 Xiao-Dong Li , Cristiano G. Sabiu , Changbom Park , Yuting Wang , Gong-bo Zhao , Hyunbae Park , Arman Shafieloo , Juhan Kim , Sungwook E. Hong
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