Results 121 to 130 of about 13,060 (254)

Baryon acoustic oscillations from a different angle

Monthly Notices of the Royal Astronomical Society
ABSTRACT This paper presents an alternative way of analysing baryon acoustic oscillation (BAO) distance measurements via rotations to define new quantities ${\cal D}^{\rm perp}$ and ${\cal D}^{\rm par}$. These quantities allow simple tests of consistency with the Planck  $\Lambda$cold dark matter (Λ CDM) cosmology.1 The parameter ${\cal ...
openaire   +3 more sources

Quantification of 2D vs 3D BAO tension using SNIa as a redshift interpolator and test of the Etherington relation

Physics Letters B
Several studies in the literature have found a disagreement between compressed data on Baryon Acoustic Oscillations (BAO) derived using two distinct methodologies: the two-dimensional (2D, transverse or angular) BAO, which extracts the BAO signal from ...
Arianna Favale, Adrià Gómez-Valent, Marina Migliaccio   +2 more
doaj   +1 more source

Dark Energy Constraints from Baryon Acoustic Oscillations [PDF]

The Astrophysical Journal, 2006
Baryon acoustic oscillations (BAO) in the galaxy power spectrum allows us to extract the scale of the comoving sound horizon at recombination, a cosmological standard ruler accurately determined by the cosmic microwave background anisotropy data. We examine various issues important in the use of BAO to probe dark energy.
openaire   +2 more sources

GALAXY BIAS AND ITS EFFECTS ON THE BARYON ACOUSTIC OSCILLATION MEASUREMENTS [PDF]

, 2011
Kushal Mehta, Hee‐Jong Seo, Jonathan Eckel, Daniel J. Eisenstein, M. Metchnik, Philip A. Pinto, Xiaoying Xu   +6 more
openalex   +1 more source

Analysing baryon acoustic oscillations in sparse spectroscopic samples via cross-correlation with dense photometry [PDF]

, 2018
Anna Patej, Daniel J. Eisenstein
openalex   +1 more source

Observational constraints on entropic cosmology

Physics Letters B
In this work, we derive a generalized modified Friedmann equation based on an entropy-area relation that incorporates established modifications, such as volumetric, linear, and logarithmic terms, in addition to novel entropic modifications that might ...
Javier Chagoya, I. Díaz-Saldaña, Mario H. Amante, J.C. López-Domínguez, M. Sabido   +4 more
doaj   +1 more source

Neutrino cosmology and Planck

New Journal of Physics, 2014
Relic neutrinos play an important role in the evolution of the Universe, modifying some of the cosmological observables. We summarize the main aspects of cosmological neutrinos and describe how the precision of present cosmological data can be used to ...
Julien Lesgourgues, Sergio Pastor
doaj   +1 more source

Measuring the Redshift-space Distortions by Cross-correlating the Density Fields Before and After Reconstruction

The Astrophysical Journal
In this work, we develop a theoretical model for the cross-power spectrum of the matter density field before and after standard baryonic acoustic oscillation reconstruction.
Weibing Zhang, Ruiyang Zhao, Xiaoyong Mu, Kazuya Koyama, Ryuichi Takahashi, Yuting Wang, Gong-Bo Zhao   +6 more
doaj   +1 more source

Nonlinear evolution of baryon acoustic oscillations from improved perturbation theory in real and redshift spaces [PDF]

, 2009
Atsushi Taruya, Takahiro Nishimichi, Shun Saito, Takashi Hiramatsu   +3 more
openalex   +1 more source

Cosmological Constraints on the Coupling Model from Observational Hubble Parameter and Baryon Acoustic Oscillation Measurements [PDF]

, 2021
Shulei Cao, Tong-Jie Zhang, Xinya Wang, Tingting Zhang   +3 more
openalex   +1 more source