Browsing Physics and Astronomy by Subject "Non-Gaussianity"

Now showing items 1-3 of 3

    • Cosmology with a SKA HI intensity mapping survey 

      Santos, Mario G.; Bull, Philip; Alonso, David; Camera, Stefano; Ferreira, Pedro G.; Bernardi, Gianni; Maartens, Roy; Viel, Matteo; Villaescusa-Navarro, Francisco; Abdalla, Filipe B.; Jarvis, Matt; Metcalf, R. Benton; Pourtsidou, A.; Wolz, Laura (Proceedings of Science, 2014)
      HI intensity mapping (IM) is a novel technique capable of mapping the large-scale structure of the Universe in three dimensions and delivering exquisite constraints on cosmology, by using HI as a biased tracer of the ...

    • Quijote-png: Simulations of primordial non-gaussianity and the information content of the matter field power spectrum and bispectrum 

      Coulton, William R; Villaescusa-Navarro, Francisco; Karagiannis, Dionysios (IOP Publishing, 2023)
      Primordial non-Gaussianity (PNG) is one of the most powerful probes of the early universe, and measurements of the large-scale structure of the universe have the potential to transform our understanding of this area. ...

    • Quijote-png: The information content of the halo power spectrum and bispectrum 

      Coulton, William R; Villaescusa-Navarro, Francisco; Karagiannis, Dionysios (IOP Publishing, 2023)
      We investigate how much can be learnt about four types of primordial non-Gaussianity (PNG) from small-scale measurements of the halo field. Using the QUIJOTE-PNG simulations, we quantify the information content accessible ...