Off-center Observers Versus Supernovae in Inhomogeneous Pressure Universes

  title={Off-center Observers Versus Supernovae in Inhomogeneous Pressure Universes},
  author={Adam P. Balcerzak and Mariusz P. Da̧browski and Tomasz Denkiewicz},
  journal={The Astrophysical Journal},
Exact luminosity distance and apparent magnitude formulae are applied to the Union2 557 supernovae sample in order to constrain the possible position of an observer outside of the center of symmetry in spherically symmetric inhomogeneous pressure Stephani universes, which are complementary to inhomogeneous density Lemaitre-Tolman-Bondi (LTB) void models. Two specific models are investigated. The first allows a barotropic equation of state at the center of symmetry without the need to specify a… 

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