Video URL

https://pirsa.org/19110039

Cosmology and cosmography from peculiar velocities in the nearby Universe

Hudson, M. (2019). Cosmology and cosmography from peculiar velocities in the nearby Universe. Perimeter Institute for Theoretical Physics. https://pirsa.org/19110039

Hudson, Mike. Cosmology and cosmography from peculiar velocities in the nearby Universe. Perimeter Institute for Theoretical Physics, Nov. 26, 2019, https://pirsa.org/19110039 

          @misc{ scivideos_PIRSA:19110039,
            doi = {10.48660/19110039},
            url = {https://pirsa.org/19110039},
            author = {Hudson, Mike},
            keywords = {Cosmology},
            language = {en},
            title = {Cosmology and cosmography from peculiar velocities in the nearby Universe},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2019},
            month = {nov},
            note = {PIRSA:19110039 see, \url{https://scivideos.org/pirsa/19110039}}
          }

Mike Hudson University of Waterloo

DOI 10.48660/19110039
Source Repository PIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

Maps of the mass density field can be used to predict peculiar velocities point-by-point. The comparison of these predictions to peculiar velocity data can be used to determine the cosmological parameter combination f sigma_8. I will briefly discuss the history of this field, present some of our recent results as well as other applications to calibrating the Hubble constant via SNe and gravitational waves, and discuss ongoing work to improving these measurements, through better modelling and, more importantly, acquiring more peculiar velocity data.