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Journées de Rencontre des Jeunes Chercheurs 2021

17–23 oct. 2021
Village La Fayette - La Rochelle
Fuseau horaire Europe/Paris

Secrétariat

Probing local anisotropies using Type Ia Supernovae data

20 oct. 2021, 15:32
23m
Village La Fayette - La Rochelle

Village La Fayette - La Rochelle

Avenue de Bourgogne, 17041 La Rochelle, France http://www.seminaire-conference-la-rochelle.org https://goo.gl/maps/c2X8hqd9maRShkCm8 The centre is located at about 5 km from the La Rochelle train station (Gare de La Rochelle) and at about 5 km from the La Rochelle airport (Aéroport de La Rochelle-Ile de Ré). The organization will provide a shuttle transportation from both the train station and the airport to the site in the evening of the first day, and from the site to the train station and the airport in the morning of the last day.
Cosmology Cosmology

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 cosmological probe that allows to map the Universe at different scales and 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 my current work on the detection of bulk flows and the systematics involved using ZTF data and simulations.

Auteur principal

Melissa Amenouche (Laboratoire de Physique de Clermont)

Documents de présentation

Aucun document.
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