Journées de Rencontre Jeunes Chercheur·se·s 2024

Session

Cosmology

Nov 25, 2024, 12:00 PM

Conveners

Cosmology

• Corentin Ravoux (LPC Clermont-Ferrand CNRS/IN2P3)

Cosmology

• Corentin Ravoux (LPC Clermont-Ferrand CNRS/IN2P3)

14. Session Overview

Corentin Ravoux (LPC Clermont-Ferrand CNRS/IN2P3)

11/25/24, 12:00 PM

65. The application of modular neural networks in CMB reconstruction

Leonora Kardum

11/25/24, 2:00 PM

In this presentation, we will explore the application of machine learning techniques in cosmology, focusing on the analysis of Cosmic Microwave Background (CMB) maps. Accurately calculating the tensor-to-scalar ratio from CMB data is a crucial yet challenging task, as it holds the key to understanding primordial gravitational waves and the early universe's inflationary period. I will discuss...

47. Masking bright objects with LSST

Nathan Amouroux

11/25/24, 2:30 PM

The Legacy Survey of Space and Time (LSST) is an ambitious project with the objective of mapping the observable universe over a ten-year period. This will be achieved through the utilisation of the Simonyi telescope, which is equipped with six distinct filters. The telescope will survey the entire visible sky in three days. However, the presence of bright objects, particularly stars,...

1. Type Ia supernova spectrophotometric standardisation and application to the ZTF spectra sample

CONSTANCE GANOT

11/25/24, 3:00 PM

Type Ia Supernovae (SNe Ia) are reliable standard candles for measuring cosmic distances due to their nearly constant maximum luminosity. Standardisation methods have been developed to reduce intrinsic scatter and improve distance estimates. Traditional photometric method reaches a 8% precision in distance, but the SNFactory (SNf) [1] survey has suggested that a spectroscopic approach can...

15. Cosmo talk #1

Leonora Kardum