3 papers
astro-ph.CO2026
Improved recipes for peculiar velocity power spectra using Evolution Mapping
Matteo Esposito, Ariel G. Sánchez, Julien Bel +1
We present new fitting functions for the velocity divergence auto- and cross-power spectra, and , calibrated on gravity-only -body simulations. By app…
astro-ph.CO2026
CNN+FoF: application of deep learning to the identification of dark matter haloes
Soumadeep Maiti, Carlos M. Correa, Andrea Fiorilli +4
We present a deep-learning-based approach for identifying dark matter haloes in cosmological N-body simulations. Our framework consists of a volumetric Convolutional Neural Network…
astro-ph.CO2024
Evolution mapping II: describing statistics of the non-linear cosmic velocity field
Matteo Esposito, Ariel G. Sánchez, Julien Bel +1
We extend the evolution mapping approach, originally proposed by Sanchez (2022) to describe non-linear matter density fluctuations, to statistics of the cosmic velocity field. This…