Primordial features from linear to nonlinear scales
Physical Review Research, 2019 Sharp features in the primordial power spectrum are a powerful window into the inflationary epoch. To date, the cosmic microwave background (CMB) has offered the most sensitive avenue to search for these signatures.
Florian Beutler +4 more
doaj +1 more source
Observational Evidence of the Accelerated Expansion of the Universe [PDF]
, 2012 The discovery of cosmic acceleration is one of the most important developments in modern cosmology. The observation, thirteen years ago, that type Ia supernovae appear dimmer that they would have been in a decelerating universe followed by a series of ...
Astier, Pierre, Pain, Reynald
core +4 more sources
Baryon acoustic oscillation methods for generic curvature: application to the SDSS-III Baryon Oscillation Spectroscopic Survey [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 We develop methods for investigating baryon acoustic oscillation (BAO) features in cosmological models with non-trivial (but slowly varying) averaged spatial curvature: models that are not necessarily flat, close to flat, nor with constant spatial curvature.
Heinesen A +3 more
openaire +4 more sources
Galaxy Clustering and Baryon Acoustic Oscillations [PDF]
Proceedings of 2nd World Summit: Exploring the Dark Side of the Universe — PoS(EDSU2018), 2018 We present measurements of Baryon Acoustic Oscillation (BAO) distances used as an uncalibrated standard ruler that determine $\Omega_{\textrm{de}}(a)$, $\Omega_k$, $\Omega_m$, and $d_{\textrm{BAO}} \equiv r_* H_0 / c$; and BAO distances used as a calibrated standard ruler $r_*$ that constrains a combination of $\sum m_\nu$, $h$, and $\Omega_b h^2$.
openaire +1 more source
The Hubble Tension Resolved by the DESI Baryon Acoustic Oscillations Measurements
The Astrophysical Journal LettersThe 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 +1 more source
Scale-Dependent Bias of Galaxies from Baryonic Acoustic Oscillations [PDF]
, 2010 Baryonic acoustic oscillations (BAOs) modulate the density ratio of baryons to dark matter across large regions of the Universe. We show that the associated variation in the mass-to-light ratio of galaxies should generate an oscillatory, scale-dependent ...
Abraham Loeb +18 more
core +1 more source
C3: Cluster Clustering Cosmology. ii. First Detection of the Baryon Acoustic Oscillations Peak in the Three-point Correlation Function of Galaxy Clusters [PDF]
, 2021 M. Moresco +4 more
openalex +1 more source
Baryonic Acoustic Oscillations in Simulated Galaxy Redshift Surveys
The Astrophysical Journal, 2005 Baryonic acoustic oscillations imprinted in the galaxy power spectrum provide a promising tool for probing the cosmological distance scale and dark energy. We present results from a suite of cosmological N-body simulations aimed at investigating possible systematic errors in the recovery of cosmological distances.
Seo, Hee-Jong, Eisenstein, Daniel J.
openaire +2 more sources
Decaying dark energy in light of the latest cosmological dataset
, 2018 Decaying Dark Energy models modify the background evolution of the most common observables, such as the Hubble function, the luminosity distance and the Cosmic Microwave Background temperature-redshift scaling relation.
de Martino, Ivan
core +1 more source
Testing CCC+TL Cosmology with Observed Baryon Acoustic Oscillation Features
The Astrophysical JournalThe primary purpose of this paper is to see how well a recently proposed new model fits (a) the position of the baryon acoustic oscillation (BAO) features observed in the large-scale distribution of galaxies and (b) the angular size measured for the ...
Rajendra P. Gupta
doaj +1 more source