Results 51 to 60 of about 3,248,739 (364)
Abstract For Turtle Island's Buffalo Nations – those sharing a common food system with bison at the centre – herds are a food source, as well as relatives and pillars of cultural continuity. Bison give life while exemplifying it to their tribal relatives who learned from the herds’ matriarchal organisation.
Becca Dower
wiley +1 more source
Precision cosmology with Padé rational approximations: Theoretical predictions versus observational limits [PDF]
We propose a novel approach for parameterizing the luminosity distance, based on the use of rational "Pad\'e" approximations. This new technique extends standard Taylor treatments, overcoming possible convergence issues at high redshifts plaguing ...
A. Aviles+3 more
semanticscholar +1 more source
Observational Constraints on Cosmological Superstrings [PDF]
From theoretical point of view and not being in contradiction with current observational data, the cosmic strings should have fundamentally different origin and are characterized by wide range of energies. The paper is devoted to search for possible cosmological observational tests on superstring theory, among them to identification of observational ...
O. S. Sazhina, Alfiia I. Mukhaeva
openaire +2 more sources
The current status of observational cosmology [PDF]
Observational cosmology has indeed made very rapid progress in recent years. The ability to quantify the universe has largely improved due to observational constraints coming from structure formation.
A A Starobinsky+42 more
core +2 more sources
Dynamical symmetries and observational constraints in scalar field cosmology [PDF]
We propose to use dynamical symmetries of the field equations, in order to classify the dark energy models in the context of scalar field (quintessence or phantom) FLRW cosmologies.
A. Paliathanasis+2 more
semanticscholar +1 more source
Cosmology with Peculiar Velocities: Observational Effects [PDF]
In this paper we investigate how observational effects could possibly bias cosmological inferences from peculiar velocity measurements. Specifically, we look at how bulk flow measurements are compared with theoretical predictions.
Andersen, Per+2 more
core +2 more sources
4 Observational Cosmology [PDF]
I discuss the classical cosmological tests-- angular size-redshift, flux-redshift, and galaxy number counts-- in the light of the cosmology prescribed by the intepretation of CMB anisotropies. The discussion is somewhat of a primer for physicists, with emphasis upon the possible systematic uncertainties in the observations and their interpretation ...
openaire +3 more sources
Cosmology with hybrid expansion law: scalar field reconstruction of cosmic history and observational constraints [PDF]
In this paper, we consider a simple form of expansion history of Universe referred to as the hybrid expansion law - a product of power-law and exponential type of functions.
Özgür Akarsu+4 more
semanticscholar +1 more source
Tale of stable interacting dark energy, observational signatures, and the H0 tension [PDF]
We investigate the observational consequences of a novel class of stable interacting dark energy (IDE) models, featuring interactions between dark matter (DM) and dark energy (DE).
Weiqiang Yang+5 more
semanticscholar +1 more source
“Observables” in causal set cosmology [PDF]
LaTeX, 1+19 pages, 2 ...
R. S. Garcia+4 more
openaire +3 more sources