Results 1 to 10 of about 12,766 (215)

Systematic treatment of non-linear effects in Baryon Acoustic Oscillations

open access: yesEPJ Web of Conferences, 2016
In this contribution we will discuss the non-linear effects in the baryon acoustic oscillations and present a systematic and controllable way to account for them within time-sliced perturbation theory.
Ivanov Mikhail M.
doaj   +3 more sources

Detecting Baryon Acoustic Oscillations [PDF]

open access: bronze, 2011
Baryon Acoustic Oscillations are a feature imprinted in the galaxy distribution by acoustic waves traveling in the plasma of the early universe. Their detection at the expected scale in large-scale structures strongly supports current cosmological models
A. Labatie   +22 more
core   +3 more sources

Isocurvature modes and Baryon Acoustic Oscillations [PDF]

open access: green, 2010
The measurement of Baryonic Acoustic Oscillations from galaxy surveys is well known to be a robust and powerful tool to constrain dark energy. This method relies on the knowledge of the size of the acoustic horizon at radiation drag derived from Cosmic ...
  +27 more
core   +4 more sources

The Hubble Tension Resolved by the DESI Baryon Acoustic Oscillations Measurements

open access: goldThe Astrophysical Journal Letters
The Lambda cold dark matter (ΛCDM) cosmological model provides a good description of a wide range of astrophysical and cosmological observations. However, severe challenges to the phenomenological ΛCDM model have emerged recently, including the Hubble ...
X. D. Jia   +4 more
doaj   +2 more sources

Gravitational wave induced baryon acoustic oscillations

open access: yesSciPost Physics, 2022
We study the impact of gravitational waves originating from a first order phase transition on structure formation. To do so, we perform a second order perturbation analysis in the $1+3$ covariant framework and derive a wave equation in which second ...
Christian Döring, Salvador Centelles Chuliá, Manfred Lindner, Bjoern Malte Schaefer, Matthias Bartelmann
doaj   +1 more source

Probing Cosmology with Baryon Acoustic Oscillations Using Gravitational Waves

open access: yesThe Astrophysical Journal, 2023
The third-generation (3G) gravitational wave (GW) detectors such as the Einstein Telescope or Cosmic Explorer are expected to play an important role in cosmology. With the help of 3G detectors, we will be able to probe large-scale structure features such
Sumit Kumar
doaj   +1 more source

Baryon Acoustic Oscillations from Integrated Neutral Gas Observations: an instrument to observe the 21cm hydrogen line in the redshift range 0.13 < z < 0.45 – status update

open access: yesAnais da Academia Brasileira de Ciências, 2021
BINGO (BAO from Integrated Neutral Gas Observations) is a unique radio telescope designed to map the intensity of neutral hydrogen distribution at cosmological distances, making the first detection of Baryon Acoustic Oscillations (BAO) in the frequency ...
CARLOS A. WUENSCHE   +50 more
doaj   +1 more source

Low-redshift estimates of the absolute scale of baryon acoustic oscillations

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Measurements of the characteristic length scale $$r_s$$ r s of the baryon acoustic oscillations (BAO) provide a robust determination of the distance-redshift relation.
Thais Lemos   +3 more
doaj   +1 more source

Living on the Fermi edge: On baryon transport and Fermi condensation

open access: yesPhysics Letters B, 2022
The transfer function of the baryon power spectrum from redshift z≈1100 to today has recently been, for the first time, determined from data by Pardo and Spergel.
Andreas Trautner
doaj   +1 more source

Bayesian comparison of interacting modified holographic Ricci dark energy scenarios

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We perform a Bayesian model selection analysis for interacting scenarios of dark matter and modified holographic Ricci dark energy (MHRDE) with linear interacting terms.
Antonella Cid   +3 more
doaj   +1 more source

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