Dipole of the luminosity distance: a direct measure of H(z).
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 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 analyze a sample of nearby supernovae and find a dipole consistent with the cosmic microwave background at a significance of more than 2alpha.
Bonvin
Camille
C
Département de Physique Théorique, Université de Genève, Switzerland. camille.bonvin@physics.unige.ch
Durrer
Ruth
R
Kunz
Martin
M