Null geodesics and observational cosmology

Details Null geodesics and observational cosmology Null geodesics and observational cosmology

2008-12-24

arxiv.org/abs/0812.4565v1

Astronomy and Astrophysics

Astrophysics

Comments Welcome

Scientific paper

The Universe is not isotropic or spatially homogeneous on local scales. The averaging of local inhomogeneities in general relativity can lead to significant dynamical effects on the evolution of the Universe, and even if the effects are at the 1% level they must be taken into account in a proper interpretation of cosmological observations. We discuss the effects that averaging (and inhomogeneities in general) can have on the dynamical evolution of the Universe and the interpretation of cosmological data. All deductions about cosmology are based on the paths of photons. We discuss some qualitative aspects of the motion of photons in an averaged geometry, particularly within the context of the luminosity distance-redshift relation in the simple case of spherical symmetry.

Affiliated with

Also associated with

No associations

Rating

Null geodesics and observational cosmology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Null geodesics and observational cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Null geodesics and observational cosmology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-396563