# Effect of inhomogeneities on the luminosity distance-redshift relation: Is dark energy necessary in a perturbed universe?

@article{Barausse2005EffectOI, title={Effect of inhomogeneities on the luminosity distance-redshift relation: Is dark energy necessary in a perturbed universe?}, author={E. Barausse and S. Matarrese and A. Riotto}, journal={Physical Review D}, year={2005}, volume={71}, pages={063537} }

The luminosity distance-redshift relation is one of the fundamental tools of modern cosmology. We compute the luminosity distance-redshift relation in a perturbed flat matter-dominated Universe, taking into account the presence of cosmological inhomogeneities up to second order in perturbation theory. Cosmological observations implementing the luminosity distance-redshift relation tell us that the Universe is presently undergoing a phase of accelerated expansion. This seems to call for a… Expand

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