Dipole of the luminosity distance: a direct measure of H(z)

Preprint

30 May 2006

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0603240

Abstract

We show that the dipole of the luminosity distance is a useful observational tool which allows us to determine the Hubble parameter as a function of the redshift H(z). We determine the number of supernovae needed to achieve a given precision for H(z) and to distinguish between different models for dark energy. We analyse a sample of nearby supernovae and find a dipole consistent with the cosmic microwave background at a significance of more than 2 sigma.

Keywords

LUMINOSITY DISTANCE
NEARBY SUPERNOVAE
DIPOLE CONSISTENT
SUPERNOVAE NEEDED
HUBBLE PARAMETER
DARK ENERGY

All Related Versions

Version 1, 2006-03-09, ArXiv
Version 2, 2006-03-10, ArXiv
Version 3, 2006-05-30, ArXiv
Published version: Physical Review Letters, 96 (19), 191302.

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