5 papers
STEPSIC: Initial condition generator for stereographic cosmological simulations
Balázs Pál, Gábor Rácz, István Csabai +1
Conventional cosmological initial condition generators are designed exclusively for fully periodic cubic domains and cannot produce the non-periodic, observer-centric configuration…
Constraints on AvERA Cosmologies from Cosmic Chronometers and Type Ia Supernovae
Adrienn Pataki, Péter Raffai, István Csabai +2
We constrain AvERA cosmologies in comparison with the flat CDM model using cosmic chronometer (CC) data and the Pantheon+ sample of type Ia supernovae (SNe Ia). The analysis in…
Euclid preparation LXXI. Simulations and nonlinearities beyond CDM. 3. Constraints on models from the photometric primary probes
Euclid Collaboration, K. Koyama, S. Pamuk +275
We study the constraint on gravity that can be obtained by photometric primary probes of the Euclid mission. Our focus is the dependence of the constraint on the theoretical…
Simulating Rotating Newtonian Universes
Balázs Pál, Tze Goh, Gábor Rácz +1
We present the results of a novel type of numerical simulation that realizes a rotating Universe with a shear-free, rigid body rotation inspired by a Gödel-like metric. We run cos…
Euclid preparation. Simulations and nonlinearities beyond CDM. 1. Numerical methods and validation
Euclid Collaboration, J. Adamek, B. Fiorini +268
To constrain models beyond CDM, the development of the Euclid analysis pipeline requires simulations that capture the nonlinear phenomenology of such models. We present an over…