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The Baryon Acoustic Oscillations (BAO) are one of the most used probes to understand the accelerated expansion of the Universe. Traditional methods rely on fiducial model information within their statistical analysis, which may be a problem…

Cosmology and Nongalactic Astrophysics · Physics 2024-05-08 Paula S. Ferreira , Ribamar R. R. Reis

Recently, Leauthaud et al discovered that the small-scale lensing signal of Baryon Oscillation Spectroscopic Survey (BOSS) galaxies is up to 40% lower than predicted by the standard models of the galaxy-halo connections that reproduced the…

Cosmology and Nongalactic Astrophysics · Physics 2020-10-08 Ying Zu

The combination of Baryonic Acoustic Oscillation (BAO) data together with light element abundance measurements from Big Bang Nucleosynthesis (BBN) has been shown to constrain the cosmological expansion history to an unprecedented degree.…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-23 N. Schöneberg , L. Verde , H. Gil-Marín , S. Brieden

We present a framework for self-consistent cosmological analyses of the full-shape anisotropic bispectrum, including the quadrupole $(\ell=2)$ and hexadecapole $(\ell=4)$ moments. This features a novel window-free algorithm for extracting…

Cosmology and Nongalactic Astrophysics · Physics 2023-04-26 Mikhail M. Ivanov , Oliver H. E. Philcox , Giovanni Cabass , Takahiro Nishimichi , Marko Simonović , Matias Zaldarriaga

We present a measurement of the baryon acoustic oscillation (BAO) scale at redshift $z=2.35$ from the three-dimensional correlation of Lyman-$\alpha$ (Ly$\alpha$) forest absorption and quasars. The study uses 266,590 quasars in the redshift…

We analyse the BOSS DR12 galaxy power spectrum data jointly with BAO data for three models of dark energy. We use recent measurements using a windowless estimator, and an independent and fast pipeline based on EFTofLSS implemented via the…

Cosmology and Nongalactic Astrophysics · Physics 2023-02-01 Pedro Carrilho , Chiara Moretti , Alkistis Pourtsidou

An axion-like field comprising $\sim 10\%$ of the energy density of the universe near matter-radiation equality is a candidate to resolve the Hubble tension; this is the "early dark energy" (EDE) model. However, as shown in Hill et al.…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-04 Mikhail M. Ivanov , Evan McDonough , J. Colin Hill , Marko Simonović , Michael W. Toomey , Stephon Alexander , Matias Zaldarriaga

We forecast constraints on cosmological parameters with primary CMB anisotropy information and weak lensing reconstruction with a future post-Planck CMB experiment, the Cosmic Origins Explorer (COrE), using oscillation data on the neutrino…

Cosmology and Nongalactic Astrophysics · Physics 2012-09-04 Alex C. Hall , Anthony Challinor

The canonical $\Lambda$CDM cosmological model makes precise predictions for the clustering and lensing properties of galaxies. It has been shown that the lensing amplitude of galaxies in the Baryon Oscillation Spectroscopic Survey (BOSS) is…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-03 Johannes U. Lange , Alexie Leauthaud , Sukhdeep Singh , Hong Guo , Rongpu Zhou , Tristan L. Smith , Francis-Yan Cyr-Racine

We update cosmological constraints on two decaying dark matter models in light of BOSS-DR12 data analyzed under the Effective Field Theory of Large-Scale Structures (EFTofLSS) formalism, together with Planck, Pantheon and other BOSS…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-10 Théo Simon , Guillermo Franco Abellán , Peizhi Du , Vivian Poulin , Yuhsin Tsai

We present a measurement of two-dimensional (2D) redshift-space power spectrum for the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 11 CMASS galaxies in the North Galactic Cap (NGC) based on the method developed by Jing &…

Cosmology and Nongalactic Astrophysics · Physics 2017-10-11 Zhigang Li , Y. P. Jing , Pengjie Zhang , Dalong Cheng

We present high signal-to-noise galaxy-galaxy lensing measurements of the BOSS CMASS sample using 250 square degrees of weak lensing data from CFHTLenS and CS82. We compare this signal with predictions from mock catalogs trained to match…

We measure the void probability function (VPF) of galaxies in the Baryon Oscillation Spectroscopic Survey (BOSS). The VPF provides complementary information to standard two-point statistics in that it is sensitive to galaxy bias in the most…

Cosmology and Nongalactic Astrophysics · Physics 2019-05-20 Kilian Walsh , Jeremy Tinker

We present, for the first time, an observational test of the consistency relation for the large-scale structure (LSS) of the Universe through a joint analysis of the anisotropic two- and three-point correlation functions (2PCF and 3PCF) of…

Cosmology and Nongalactic Astrophysics · Physics 2023-07-18 Naonori S. Sugiyama , Daisuke Yamauchi , Tsutomu Kobayashi , Tomohiro Fujita , Shun Arai , Shin'ichi Hirano , Shun Saito , Florian Beutler , Hee-Jong Seo

We present cosmological parameters measurements from the full combination of DESI DR1 galaxy clustering data described with large-scale structure effective field theory. By incorporating additional datasets (photometric galaxies and CMB…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-23 Mikhail M. Ivanov , James M. Sullivan , Shi-Fan Chen , Anton Chudaykin , Mark Maus , Oliver H. E. Philcox

In this study, we probe the transition to cosmic homogeneity in the Large Scale Structure (LSS) of the Universe using the CMASS galaxy sample of BOSS spectroscopic survey which covers the largest effective volume to date, $3\ h^{-3}\…

We present the large-scale 3-point correlation function (3PCF) of the SDSS DR12 CMASS sample of $777,202$ Luminous Red Galaxies, the largest-ever sample used for a 3PCF or bispectrum measurement. We make the first high-significance…

We present results from the analysis of cosmic microwave background (CMB), large scale structure (galaxy redshift survey) and X-ray galaxy cluster (baryon fraction and X-ray luminosity function) data, assuming a geometrically flat…

Astrophysics · Physics 2009-11-10 S. W. Allen , R. W. Schmidt , S. L. Bridle
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