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Phys. Rev. Lett. 101, 131302 (2008) [4 pages]

Living in a Void: Testing the Copernican Principle with Distant Supernovae

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Timothy Clifton*, Pedro G. Ferreira, and Kate Land
Department of Physics, Oxford Astrophysics, DWB, Keble Road, Oxford, OX1 3RH, United Kingdom

Received 9 July 2008; revised 5 September 2008; published 26 September 2008

We show that the local redshift dependence of the luminosity distance can be used to test the Copernican principle that we are not in a central or otherwise special region of the Universe. Future surveys of type Ia supernovae that focus on a redshift range of ∼0.1–0.4 will be ideally suited to observationally determine the validity of the Copernican principle on new scales, as well as probing the degree to which dark energy must be considered a necessary ingredient in the Universe.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.131302
DOI:
10.1103/PhysRevLett.101.131302
PACS:
98.80.Es, 95.36.+x, 97.60.Bw, 98.62.Py

*tclifton@astro.ox.ac.uk