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

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posted on 2023-06-07, 20:36 authored by Camile Bonvin, Ruth Durrer, Martin Kunz
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 2sigma.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review Letters

ISSN

0031-9007

Publisher

American Physical Society

Issue

19

Volume

96

Page range

91302.1-191302.4

Pages

4.0

Department affiliated with

  • Physics and Astronomy Publications

Notes

Shows how the dipole of the angular distribution of supernovae measures the Hubble parameter as function of redshift, and that the low-z dipole is consistent with the CMB one. The result follows from an earlier paper by Bonvin and Durrer, I did the numerical analysis for this paper. (16 HEP/SPIRES citations)

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2016-11-10

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