Results 51 to 60 of about 13,060 (254)
Can Baryonic Features Produce the Observed 100 Mpc Clustering? [PDF]
, 1997 We assess the possibility that baryonic acoustic oscillations in adiabatic models may explain the observations of excess power in large-scale structure on 100h^-1 Mpc scales. The observed location restricts models to two extreme areas of parameter space.
Alexander S. Szalay +8 more
core +2 more sources
Physical constraints on interacting dark energy models
European Physical Journal C: Particles and Fields, 2018 Physical limits on the equation-of-state (EoS) parameter of a dark energy component non-minimally coupled with the dark matter field are examined in light of the second law of thermodynamics and the positiveness of entropy.
J. E. Gonzalez +3 more
doaj +1 more source
Asymmetric Dark Matter and Dark Radiation [PDF]
, 2012 Asymmetric Dark Matter (ADM) models invoke a particle-antiparticle asymmetry, similar to the one observed in the Baryon sector, to account for the Dark Matter (DM) abundance.
A. Lewis +46 more
core +2 more sources
Reconstructing the baryon acoustic oscillations using biased tracers [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 The reconstruction of the initial conditions of the Universe is an important topic in cosmology, particularly in the context of sharpening the measurement of the baryon acoustic oscillation (BAO) peak. Nonlinear reconstruction algorithms developed in recent years, when applied to late-time matter fields, can recover to a substantial degree the initial ...
Jack Birkin +3 more
openaire +4 more sources
WFMOS - Sounding the Dark Cosmos [PDF]
, 2005 Vast sound waves traveling through the relativistic plasma during the first million years of the universe imprint a preferred scale in the density of matter.
Bassett, Bruce A. +3 more
core +2 more sources
Theoretical Systematics of Future Baryon Acoustic Oscillation Surveys [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 33 pages, 19 figures, 4 tables. Submitted to MNRAS. Matches version accepted to MNRAS.
Zhejie Ding +5 more
openaire +3 more sources
Accuracy of cosmological parameters using the baryon acoustic scale [PDF]
, 2014 Percent-level measurements of the comoving baryon acoustic scale standard ruler can be used to break degeneracies in parameter constraints from the CMB alone.
Lewis, Antony, Thepsuriya, Kiattisak
core +2 more sources
The Astrophysical Journal, 2023 The dispersion measure (DM)–redshift relation of fast radio bursts (FRBs) has been proposed as a potential new tool for probing the intergalactic medium (IGM) and for studying cosmology. However, poor knowledge of the baryon fraction in the IGM ( f _IGM )
Bao Wang, Jun-Jie Wei
doaj +1 more source
A NEW STATISTIC FOR ANALYZING BARYON ACOUSTIC OSCILLATIONS [PDF]
The Astrophysical Journal, 2010 We introduce a new statistic omega_l for measuring and analyzing large-scale structure and particularly the baryon acoustic oscillations. omega_l is a band-filtered, configuration space statistic that is easily implemented and has advantages over the traditional power spectrum and correlation function estimators.
Xu, X. +8 more
openaire +2 more sources
Low-redshift constraints on covariant canonical Gauge theory of gravity
European Physical Journal C: Particles and Fields, 2021 Constraints on the Covariant Canonical Gauge Gravity (CCGG) theory from low-redshift cosmology are studied. The formulation extends Einstein’s theory of General Relativity (GR) by a quadratic Riemann–Cartan term in the Lagrangian, controlled by a ...
David Benisty +3 more
doaj +1 more source