Averaging Inhomogeneous Universes: Volume, Angle, Line of Sight [astroph/9801122

@inproceedings{LinderAveragingIU,
  title={Averaging Inhomogeneous Universes: Volume, Angle, Line of Sight [astroph/9801122},
  author={Eric V. Linder}
}
Cosmologies that match in a volume averaged sense need not generally have the same light propagation behaviors. In particular a universe with inhomogeneity may not demonstrate the Friedmann-Robertson-Walker distance-redshift relation even after volume averaging to FRW spacetime. Even the Dyer-Roeder prescription for incorporating inhomo-geneity within a universe equivalent to FRW in an angle averaged sense does not guarantee FRW behavior in general. To legitimately use the FRW distance-redshift… CONTINUE READING