Présidents de session
Présentations appel à contributions / Accepted contributions: SNela
- Celine Combet (LPSC - Grenoble)
Présentations appel à contributions / Accepted contributions: Computing et outils (ML, Broker, DC2, etc.)
- Fabio Hernandez (CC-IN2P3)
Présentations appel à contributions / Accepted contributions: Calibration, des pixels aux catalogues (PSF, deblending, etc.)
- Mickael Rigault (IP2I)
Présentations appel à contributions / Accepted contributions: Clusters
- Celine Combet (LPSC - Grenoble)
Présentations appel à contributions / Accepted contributions: LSS, cosmic shear
- Gaëlle SHIFRIN (Centre de Calcul de l'IN2P3)
Measurements of the standardisable type Ia supernova (SNeIa) out to the earliest epochs in the Universe remain the most robust probe of cosmic acceleration. However, to ensure unbiased precision estimates on the nature of dark energy requires a firm understanding of where the observed 0.15mag dispersion observed in these events originates from, and a detailed description of any evolution in...
The galaxy morphology is a way to characterize the Type Ia supernova (SN Ia) environnement. In this talk, first, the correlation between the galaxy morphology and other tracers of SN Ia environnment will be addressed. In a second part, the study of the dependency of SALT2 light curve parameters with respect to the galaxy morphology from the Pantheon compilation will be presented, as well as...
The true nature of type Ia supernovae (SNe Ia) remains largely unknown, and as survey statistics increase, the question of astrophysical systematic uncertainties rises, notably that of the SN Ia population evolution. In this paper, we study the dependence with redshift of the SN Ia SALT2.4 lightcurve stretch, a purely intrinsic SN property, to probe its potential redshift drift. The SN stretch...
In this presentation I will attempt to make an overview of the current state of machine learning in the French LSST community (applications, techniques, available hardware and knowledge, etc.) and start a discussion on the various opportunities that could be adopted forward or actions undertaken.
Atmospheric turbulence is one of the significant problems to get unbiased flux and shape measurement on a ground-based experiment as the Vera Rubin Observatory. Indeed, atmospheric turbulences is one of the main arguments to get an unbiased flux and shape from space as Euclid will do. In this talk, I’ll present one solution to take into account Atmospheric turbulences for the current...
The Zwicky Transient Facility (ZTF) has started observing transient objects since 2018 for six years. The goal of the survey is to reach a sample of 6000 Type Ia Supernovas to probe the nearby Universe. With the actual calibration pipeline, ZTF is reaching 15 mmag of precision. Efforts have being deployed within the collaboration to imporve the precision and reach the mmag level. One of the...
We process HSC data using LSST software with the aim on detecting SN in the HSC transient survey. Currently, we are studying the efficiency of SN detection. To do so, we add fakes around the galaxies of a bunch of visits, and others with arbitrary positions. I will present the progress done in this work with the perspectives.
Update on the recent developments of Spectractor to get accurate atmospheric transmission curves with AuxTel.
I this presentation I will introduce the use of the gravitational magnification effect as a complementary probe to constrain the weak lensing mass of galaxy clusters in the LSST. I will explain the methodology, its advantages and show preliminary results on the DESC DC2 simulation.
In this talk, I’ll present in the first part some current work of testing General relativity using current cosmic shear data. Moreover, I’ll present some perspective of doing the same job using VRO data.
je presenterai un nouvel algorthme pour le pipeline TXPIPE (3x2pts) qui permet de traiter la combinatoire du comptage de paires pour les donnees LSST
