# International conference PUMA22 Probing the Universe with Multimessenger Astrophysics

Sep 26 – 30, 2022
Sestri Levante
Europe/Rome timezone

## Constraing Dark Energy parameters with needlet

Sep 27, 2022, 4:25 PM
20m
Sestri Levante

#### Sestri Levante

Grand Hotel dei Castelli, Via Penisola Levante, 26, 16039 Sestri Levante (GE), Italy
Oral contribution

### Speaker

Bianca De Caro (Istituto Nazionale di Fisica Nucleare)

### Description

Euclid experiment will allow us to derive constraints on cosmological parameters and model selection through cross-correlation measurements between Cosmic Microwave Background (CMB) and Large Scale Structure (LSS). In this work we focalize on the detection of the late Integrated Sachs-Wolfe effect in order to constraint the density parameter for the dark energy $\Omega_{DE}$, the equation of state w and the speed of sound $c_s^{2}$, by means of a needlet-based cross-correlation estimator.

### Primary authors

Dr Alessandro Renzi (Università degli Studi di Padova) Bianca De Caro (Istituto Nazionale di Fisica Nucleare)