Browsing Faculty of Natural Sciences by Subject "Isotropy"

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    • Constraints on anisotropic cosmic expansion from supernovae 

      Kalus, Benedict; Schwarz, Dominik J.; Seikel, Marina; Wiegand, Alexander (Edp Sciences, 2013)
      AIMS. We test the isotropy of the expansion of the Universe by estimating the hemispherical anisotropy of supernova type Ia (SN Ia) Hubble diagrams at low redshifts (z < 0.2). METHODS. We compare the best fit Hubble ...

    • The Copernican principle in light of the latest cosmological data 

      Clarkson, D.; Camarena, D.; Marra, V.; Sakr, Z. (University of the Western Cape, 2022)
      We pursue a program to confront observations with inhomogeneous extensions of the FLRW metric. The main idea is to test the Copernican principle (CP) rather than assuming it a priori. We consider the CDM model endowed with ...