3 papers
astro-ph.CO2026
On the Reliability of Quasars as Cosmological Distance Indicators
Ariadna Montiel, Sofia Samario-Nava, Juan Carlos Hidalgo +1
We assess the viability of quasars as cosmological distance indicators based on the non-linear -- relation. We calibrate this relation in a model-independent way b…
astro-ph.CO2026
Optimization of Weak Lensing Lightcone Simulations for Higher-Order Statistics in the LSST era
J. Mena-Fernández, C. Doux, J. Harnois-Déraps +9
We present a framework for generating lightcone simulations tailored to the analysis of Stage-IV cosmic shear data using Higher-Order Statistics (HOS). We revisit key design choice…
astro-ph.CO2026
Non-Gaussian statistics in galaxy weak lensing: compressed three-point correlations and cosmological forecasts
Sofia Samario-Nava, Alejandro Aviles, Juan Carlos Hidalgo
Building on previous developments of a harmonic decomposition framework for computing the three-point correlation function (3PCF) of projected scalar fields over the sky, this work…