Zobrazeno 1 - 10
of 625
pro vyhledávání: '"Li, Baojiu"'
A major aim of current and upcoming cosmological surveys is testing deviations from the standard $\Lambda$CDM model, but the full scientific value of these surveys will only be realised through efficient simulation methods that keep up with the incre
Externí odkaz:
http://arxiv.org/abs/2407.15934
The latest cosmological constraints on the sum of the neutrino masses depend on prior physical assumptions about the mass spectrum. To test the accordance of cosmological and laboratory constraints in the absence of such priors, we introduce an effec
Externí odkaz:
http://arxiv.org/abs/2407.10965
We present an in-depth investigation of galaxy clustering based on a new suite of realistic large-box galaxy-formation simulations in $f(R)$ gravity, with a subgrid physics model that has been recalibrated to reproduce various observed stellar and ga
Externí odkaz:
http://arxiv.org/abs/2407.01668
Autor:
Bose, Benjamin, Gupta, Ashim Sen, Fiorini, Bartolomeo, Brando, Guilherme, Hassani, Farbod, Baker, Tessa, Lombriser, Lucas, Li, Baojiu, Ruan, Cheng-Zong, Hernandez-Aguayo, Cesar, Atayde, Luis, Frusciante, Noemi
Testing gravity and the concordance model of cosmology, $\Lambda$CDM, at large scales is a key goal of this decade's largest galaxy surveys. Here we present a comparative study of dark matter power spectrum predictions from different numerical codes
Externí odkaz:
http://arxiv.org/abs/2406.13667
Autor:
Davies, Christopher T., Harnois-Déraps, Joachim, Li, Baojiu, Giblin, Benjamin, Hernández-Aguayo, César, Paillas, Enrique
It is well established that maximizing the information extracted from upcoming and ongoing stage-IV weak-lensing surveys requires higher-order summary statistics that complement the standard two-point statistics. In this work, we focus on weak-lensin
Externí odkaz:
http://arxiv.org/abs/2406.11958
ExaGRyPE describes a suite of solvers for numerical relativity, based upon ExaHyPE 2, the second generation of our Exascale Hyperbolic PDE Engine. The presented generation of ExaGRyPE solves the Einstein equations in the CCZ4 formulation under a 3+1
Externí odkaz:
http://arxiv.org/abs/2406.11626
We present a method for modelling the cluster-galaxy correlation function in redshift-space, down to ~ Mpc scales. The method builds upon the so-called Galaxy Infall Kinematics (GIK) model, a parametric model for the pairwise velocities of galaxies w
Externí odkaz:
http://arxiv.org/abs/2406.01527
To fully exploit the data from next generation surveys, we need an accurate modelling of the matter power spectrum up to non-linear scales. Therefore in this work we present the halo model reaction framework for the Generalized Cubic Covariant Galile
Externí odkaz:
http://arxiv.org/abs/2404.11471
Autor:
Elbers, Willem, Frenk, Carlos S., Jenkins, Adrian, Li, Baojiu, Helly, John C., Kugel, Roi, Schaller, Matthieu, Schaye, Joop, Braspenning, Joey, Kwan, Juliana, McCarthy, Ian G., Salcido, Jaime, van Daalen, Marcel P., Vandenbroucke, Bert, Pascoli, Silvia
Large-scale structure surveys have reported measurements of the density of matter, $\Omega_\mathrm{m}$, and the amplitude of clustering, $\sigma_8$, that are in tension with the values inferred from observations of the cosmic microwave background. Wh
Externí odkaz:
http://arxiv.org/abs/2403.12967
Autor:
Rodriguez-Meza, Mario A., Aviles, Alejandro, Noriega, Hernan E., Ruan, Cheng-Zong, Li, Baojiu, Vargas-Magaña, Mariana, Cervantes-Cota, Jorge L.
Publikováno v:
JCAP03(2024)049
Modified gravity models with scale-dependent linear growth typically exhibit an enhancement in the power spectrum beyond a certain scale. The conventional methods for extracting cosmological information usually involve inferring modified gravity effe
Externí odkaz:
http://arxiv.org/abs/2312.10510