Orateur
Melissa Amenouche
(Laboratoire de Physique de Clermont)
Description
A large variety of cosmological observations has validated the Λ CDM model as the leading one in driving the dynamics of the Universe. This model requires the validity of several assumptions : the Cosmological Principle (homogeneity and isotropy at large scales). Despite numerous successes, the standard model is facing some challenges like the detection of large scale velocity flows.
Type Ia supernovae (SNe Ia) are a cosmological probe allowing to map the Universe at different scales to measure its dynamics. The new data set from the Zwicky Transient Facility (ZTF) at z < 0.1 constitutes a unique sample to investigate potential anisotropies in the nearby Universe. I will present the first investigation about the bulk flow measurement.
Auteur principal
Melissa Amenouche
(Laboratoire de Physique de Clermont)
