Résumé / Abstract Journal-club_Univers

Journal-club Univers / Journal-club Universe

« Constraining cosmological parameters with peculiar velocities: comparing reconstructions to observations »

Supranta Sarma Boruah
Dept of Physics & Astronomy, University of Waterloo (Waterloo, Canada)

Peculiar velocities are sourced by the gravitational instabilities in the Universe and are therefore sensitive to dark matter structures. Studying peculiar velocities is currently the only way to constrain the growth of structures in the low-redshift Universe. In this talk, I will describe a method for analyzing peculiar velocities by comparing observations to reconstruction. I will then present a recent application of this method to constraining low-redshift growth rate by analyzing the peculiar velocities using local observations of Tully-Fisher galaxies and Type Ia supernovae.
mardi 14 avril 2020 - 14:30
Webinaire, Institut d'Astrophysique
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