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Found 10 papers, 2 papers with code
The CAMELS project: public data release
The Cosmology and Astrophysics with MachinE Learning Simulations (CAMELS) project was developed to combine cosmology with astrophysics through thousands of cosmological hydrodynamic simulations and machine learning.
Sources of $H_0$-tensions in dark energy scenarios
Through a joint analysis with low-redshift supernovae type-Ia and gravitationally lensed time delay datasets, {and neglecting galaxy clustering Baryonic Acoustic Oscillation (BAO) data}, we find that the inclusion of early universe CMB priors is consistent with the local estimate of $H_0$ while excluding the low-$l$+lowE likelihoods mildly relaxes the tension.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
The evolution of the low-density HI intergalactic medium from z=3.6 to 0: Data, transmitted flux and HI column density
The individual dn/dz shows a large scatter at a given z.
Cosmology and Nongalactic Astrophysics
Quantifying the impact of baryon-CDM perturbations on halo clustering and baryon fraction
Using gravity-only 2-fluid simulations we assess the impact of such perturbations on the dark matter halos distribution.
Cosmology and Nongalactic Astrophysics
Constraints on the Spacetime Dynamics of an Early Dark Energy Component
We find that the inclusion of Baryonic Acoustic Oscillations (BAO) data and CMB lensing significantly improves the constraints on the EDE parameters, while other high redshift data like the Quasar Hubble diagram and the Lyman-$\alpha$ forest BAO have instead a negligible impact.
Cosmology and Nongalactic Astrophysics
The Quijote simulations
The Quijote simulations are a set of 44, 100 full N-body simulations spanning more than 7, 000 cosmological models in the $\{\Omega_{\rm m}, \Omega_{\rm b}, h, n_s, \sigma_8, M_\nu, w \}$ hyperplane.
Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
Cosmology with massive neutrinos III: the halo mass function and an application to galaxy clusters
We find that, in a massive neutrino cosmology, our correction to the halo mass function produces a shift in the $\sigma_8(\Omega_{\rm m}/0. 27)^\gamma$ relation which can be quantified as $\Delta \gamma \sim 0. 05$ and $\Delta \gamma \sim 0. 14$ assuming one ($N_\nu=1$) or three ($N_\nu=3$) degenerate massive neutrino, respectively.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
Cosmology with massive neutrinos I: towards a realistic modeling of the relation between matter, haloes and galaxies
We compute the bias between the spatial distribution of dark matter haloes and the overall matter and cold dark matter distributions using statistical tools such as the power spectrum and the two-point correlation function.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
The one-dimensional Ly-alpha forest power spectrum from BOSS
We have developed two independent methods to measure the one-dimensional power spectrum of the transmitted flux in the Lyman-$\alpha$ forest.
Cosmology and Nongalactic Astrophysics
Massive Neutrinos and the Non-linear Matter Power Spectrum
We extend the widely used HALOFIT approximation to account for the effect of massive neutrinos on the power spectrum.
Cosmology and Nongalactic Astrophysics
