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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Time drift of cosmological redshifts as a test of the copernican principle
Physical Review Letters, Volume 100, No. 19, Article 191303, Year 2008
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Description
We present the time drift of the cosmological redshift in a general spherically symmetric spacetime. We demonstrate that its observation would allow us to test the Copernican principle and so determine if our Universe is radially inhomogeneous, an important issue in our understanding of dark energy. In particular, when combined with distance data, this extra observable allows one to fully reconstruct the geometry of a spacetime describing a spherically symmetric underdense region around us, purely from background observations. © 2008 The American Physical Society.
Authors & Co-Authors
Uzan, Jean Philippe
France, Paris
Institut D’astrophysique de Paris
Clarkson, Chris A.
South Africa, Cape Town
University of Cape Town
Ellis, George Francis Rayner
South Africa, Cape Town
University of Cape Town
Statistics
Citations: 156
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1103/PhysRevLett.100.191303
ISSN:
00319007
e-ISSN:
10797114