2 papers
astro-ph.CO2026
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…
astro-ph.CO2026
Improving constraints on primordial non-Gaussianity from Quaia with a new cosmological observable: angular redshift fluctuations
José Ramón Bermejo-Climent, Carlos Hernández-Monteagudo, Alba Crespo-Pérez +4
Angular redshift fluctuations (ARF) are a new cosmological observable, recently proposed in the literature. It measures the 2D angular deviations of the average redshift of a given…