Found 632 results, showing the newest relevant preprints. Sort by relevancy only.Update me on new preprints

Cosmological Filaments in the light of Excursion Set of Saddle Points

The universe in large scales is structured as a network known as cosmic web. Expand abstract.
378 days ago
4/10 relevant
arXiv

Dark Quest. I. Fast and Accurate Emulation of Halo Clustering Statistics and Its Application to Galaxy Clustering

We perform an ensemble of $N$-body simulations with $2048^3$ particles for 101 flat $w$CDM cosmological models sampled based on a maximin-distance Sliced Latin Hypercube Design. Expand abstract.
384 days ago
5/10 relevant
arXiv

The energy of the universe in the Bianchi type-II cosmological model

To investigate the energy of Bianchi type-II cosmological model, I used the energy-momentum complexes of Einstein and M{\o}ller and obtained the zero total energy in these two prescriptions. Expand abstract.
423 days ago
7/10 relevant
arXiv

Dark Energy Survey Year 1 Results: Joint Analysis of Galaxy Clustering, Galaxy Lensing, and CMB Lensing Two-point Functions

We perform a joint analysis of the auto and cross-correlations between three cosmic fields: the galaxy density field, the galaxy weak lensing shear field, and the cosmic microwave background (CMB) weak lensing convergence field. Expand abstract.
434 days ago
4/10 relevant
arXiv

Dark Energy Survey Year 1 Results: Constraints on Extended Cosmological Models from Galaxy Clustering and Weak Lensing

We present constraints on extensions of the minimal cosmological models dominated by dark matter and dark energy, $\Lambda$CDM and $w$CDM, by using a combined analysis of galaxy clustering and weak gravitational lensing from the first-year data of the Dark Energy Survey (DES Y1) in combination with external data. Expand abstract.
434 days ago
10/10 relevant
arXiv

Automated Lensing Learner: Automated Strong Lensing Identification with a Computer Vision Technique

Models trained on fewer images perform better in absence of the lens galaxy light. Expand abstract.
979 days ago
4/10 relevant
arXiv

Redshift remapping and cosmic acceleration in dark-matter-dominated cosmological models

Here we present non-parametric reconstructions of redshift remapping in dark-matter-dominated models and constraints on cosmological parameters from a joint analysis of all primary cosmological probes including the local measurement of the Hubble constant, Type Ia supernovae, baryonic acoustic oscillations... Expand abstract.
1156 days ago
10/10 relevant
arXiv

Constraints on non-flat cosmologies with massive neutrinos after Planck 2015

We investigate two dark energy cosmological models (i.e., the $\Lambda$CDM and $\phi$CDM models) with massive neutrinos assuming two different neutrino mass hierarchies in both the spatially flat and non-flat scenarios, where in the $\phi$CDM model the scalar field possesses an inverse power-law potential, $V(\phi)\propto {\phi}^{-\alpha}$ ($\alphaandgt;0$). Expand abstract.
1359 days ago
4/10 relevant
arXiv

Quasi-isotropic expansion for a two-fluid cosmological model containing radiation and string gas

The quasi-isotropic expansion for a simple two-fluid cosmological model, including radiation and string gas is constructed. Expand abstract.
2202 days ago
8/10 relevant
arXiv

Application of the Abel Equation of the 1st kind to an inflation analysis of non-exactly solvable cosmological models

In addition, the relationship between the slow-rolling condition and the inflation is ascertained. Expand abstract.
2481 days ago
8/10 relevant
arXiv