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Ateliers action Dark Energy 2020

18–20 mai 2020
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Fuseau horaire Europe/Paris

Contacts

Liste des Contributions

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  1. 19. Homogeneity and Isotropy in the Quantum Universe
    Dr Federico Piazza (CPT)
    18/05/2020 15:00
  2. 20. Perturbation Theory of Large Scale Structures: Numerical Code ”CLASS-PT”
    Pierros Ntelis (CPPM)
    18/05/2020 15:20
  3. 21. A unique reconstruction for the density and velocity fields: application of the extended Fast Action Minimisation method to Baryon acoustic oscillation and voids.
    Dr Elena Sarpa
    18/05/2020 15:40
  4. 11. Simulation cosmologique: conditions initiales, neutrinos
    Prof. Oliver Hahn (Observatoire de la Côte d'Azur)
    18/05/2020 16:15
  5. 23. Strong Lensing dans les amas de galaxies comme sonde cosmologique
    Eric Jullo (LAM)
    19/05/2020 14:00
  6. 8. Towards a non-Gaussian model of RSD
    Pauline Zarrouk (ICC Durham University)
    19/05/2020 14:30

    In this talk, I will present the work we did in Cuesta-Lazaro et al. (2020, arXiv:2002.02683). I will first remind the ingredients we need to get a prediction of the redshift-space clustering of galaxies and extract constraints on the growth rate of structures. Then, I will present the improvement of the modelling of the galaxy pairwise velocities at small scales we proposed using the Skew-T...

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  7. 14. Charged Dark Matter and the H0 tension
    philippe brax (IPHT Saclay)
    19/05/2020 15:00
  8. 15. Hairy Extreme Mass Ratio Inspirals
    Adrien Kuntz
    19/05/2020 15:20
  9. 16. Resolving the H0 tension with diffusion
    Prof. Alejandro Perez (CPT)
    19/05/2020 15:40
  10. 18. Simu N-corps, DE et effets relativistes
    Yann RASERA (LUTH/Obs. de Paris/Univ. de Paris)
    19/05/2020 16:00
  11. 22. Univers quantique, constante de Hubble et Energie Noire
    Prof. Norma G. Sanchez (LERMA, CNRS UMR 8112, 61, Observatoire de Paris PSL), Dr Norma Sanchez
    20/05/2020 09:30

    Nouveaux résultats seront présentés pour l’énergie noire dans l’Univers depuis ses phases quantiques planckienne et trans-planckienne avant l’inflation jusqu’à la phase actuelle en accord avec les observations. Les niveaux quantiques discrets de l’énergie du vide cosmologique seront présen-tés permettant de caracteriser et suivre les différentes phases jusqu’au continuum classique des...

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  12. 10. Generalized Dark Matter Cosmological Observables and Constraints.
    ziad sakr (IRAP : Institut de Recherche en Astrophysique et Planétologie)
    20/05/2020 09:50

    Generalized Dark Matter in one of its simplest form is an extension to the dark matter paradigm allowing homogeneous and perturbed pressures through a non vanishing equation of state parameter with a sound speed parameter different from zero. Yet these deviations from LCDM model could translate in large changes in the determination of geometrical cosmological observables as well as those of...

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  13. 3. Constraints on Dynamical Dark Energy Models from the Abundance of Massive Galaxies at High Redshifts
    Dr Nicola Menci (INAF - Osservatorio Astronomico di Roma)
    20/05/2020 10:10

    We compare the maximal abundance of massive systems predicted in different dynamical dark energy (DDE) models at high redshifts $z \approx 4-7$ with the measured abundance of the most massive galaxies observed to be already in place at such redshifts. The aim is to derive constraints for the evolution of the
    dark energy equation of state parameter $w$ which are complementary to existing...

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  14. 17. Simulations cosmologiques, émulateurs et effets baryoniques pour le weak-lensing
    Prof. Romain Teyssier
    20/05/2020 10:30
  15. 7. BAO in the projected cross-correlation of eBOSS DR16 quasars and photometric ELG from the DESI Imaging Surveys
    Pauline Zarrouk (ICC Durham University)
    20/05/2020 11:30

    In this talk, I will present a work I did (publication under collaboration review) where I measured the Baryon Acoustic Oscillations in the projected cross-correlation function binned into transverse comoving radius between the SDSS-IV DR16 eBOSS quasars and a dense photometric sample of emission line galaxies selected from the DESI Legacy Imaging Surveys, which enables to constrain the...

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  16. 26. Approximation des corrélations croisées entre les sondes Galaxy Clustering spectroscopique (3D) et les sondes Photométriques (2D)
    M. Fabien Dournac (IRAP - Toulouse III)
    20/05/2020 12:00

    Abstract :

    Nous avons mené une étude sommaire afin d'avoir une approximation des résultats qui pourraient être obtenus dans le cas de corrélations croisées entre les sondes Galaxy Clustering spectroscopiques (GCsp) et les sondes photométriques (Galaxy Clustering photométrique - GCph - et Lentillage faible - Weak Lensing - WL). L'approche consiste à assimiler les bins spectroscopiques et une...

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