Browsing Faculty of Natural Sciences by Author "Jolicoeur, Sheean"

Now showing items 1-4 of 4

    • Constraining primordial non-Gaussianity by combining next-generation galaxy and 21 cm intensity mapping surveys 

      Sheean, Jolicoeur; Maartens, Roy; Jolicoeur, Sheean; Dlamini, Simthembile (Institute for Ionics, 2023)
      Surveys of the matter distribution contain ‘fossil’ information on possible non-Gaussianity that is generated in the primordial universe. This primordial signal survives only on the largest scales where cosmic variance ...

    • Constraining primordial non-gaussianity by combining next-generation galaxy and 21 cm intensity mapping surveys 

      Jolicoeur, Sheean; Maartens, Roy; Dlamini, Simthembile (SpringerOpen, 2023)
      Surveys of the matter distribution contain ‘fossil’ information on possible non-Gaussianity that is generated in the primordialUniverse. This primordial signal survives only on the largest scales where cosmic variance ...

    • Detecting the relativistic galaxy bispectrum 

      Maartens, Roy; Jolicoeur, Sheean; Umeh, Obinna (IOP Publishing Ltd, 2020)
      The Fourier galaxy bispectrum is complex, with the imaginary part arising from leading-order relativistic corrections, due to Doppler, gravitational redshift and related lineof-sight effects in redshift space. The detection ...

    • Multipoles of the relativistic galaxy bispectrum 

      Clarkson, Chris; de Weerd, Eline M.; Jolicoeur, Sheean (IOP Publishing Ltd, 2020)
      Above the equality scale the galaxy bispectrum will be a key probe for measuring primordial non-Gaussianity which can help differentiate between different inflationary models and other theories of the early universe. On ...