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168 papers
Probing dark energy evolution with Quaia quasars through the integrated Sachs-Wolfe effect
M. Ghodsi Yengejeh, J. R. Bermejo-Climent, A. Kovács +2
The Integrated Sachs--Wolfe (ISW) effect probes the late-time evolution of gravitational potentials and provides a complementary test of the nature of dark energy. We investigate w…
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…
Cylindrical cosmological simulations with StePS
Gábor Rácz, Viola H. Varga, Balázs Pál +3
The global topology of the Universe can affect long-range gravitational forces via boundary conditions. Detailed studies of non-trivial topologies require simulations that natively…
Integrated Sachs-Wolfe maps from the Gower Street CDM simulations
Mina Ghodsi Yengejeh, András Kovács, István Szapudi +1
The late-time linear Integrated Sachs-Wolfe (ISW) effect directly probes the dynamics of cosmic acceleration and the nature of dark energy. Detecting these weak, secondary temperat…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
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 inc…