7–12 Jul 2024
Aurum, the ‘Gabriele d’Annunzio’ University and ICRANet
Europe/Rome timezone

Accelerating Likelihood Exploration to Constrain Cosmological Parameters Using 2- and 3-Point Correlation Functions Emulators

12 Jul 2024, 15:20
20m
M4 (Palazzo Micara of the ‘Gabriele d’Annunzio’ University)

M4

Palazzo Micara of the ‘Gabriele d’Annunzio’ University

Viale Pindaro, 42, Pescara
Talk in a parallel session Machine learning in astronomy: AGN, transient events, cosmology and others Machine learning in astronomy: AGN, transient events, cosmology and others

Speaker

Massimo Guidi (University of Bologna)

Description

Constraining cosmological parameters for galaxy clustering analyses using the three-point correlation function, despite being pivotal, has historically been limited by the high computational cost of modelling. Here, we introduce a new emulator, based on a convolutional neural network, developed within the framework of a Euclid Preparation Key-Project activity, which substantially accelerates Monte Carlo Markov Chains evaluation making a cosmological analysis feasible. As a result, we will also present how different applications of the new emulator can shed light on disentangling and investigating cosmological models in view of future survey datasets.

Primary author

Massimo Guidi (University of Bologna)

Presentation materials

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