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Title: Fluctuations of the luminosity distance

Abstract

We derive an expression for the luminosity distance in a perturbed Friedmann universe. We define the correlation function and the power spectrum of the luminosity distance fluctuations and express them in terms of the initial spectrum of the Bardeen potential. We present semianalytical results for the case of a pure CDM (cold dark matter) universe. We argue that the luminosity distance power spectrum represents a new observational tool which can be used to determine cosmological parameters. In addition, our results shed some light into the debate whether second order small scale fluctuations can mimic an accelerating universe.

Authors:
; ;  [1]
  1. Departement de Physique Theorique, Universite de Geneve, 24 quai Ernest Ansermet, CH-1211 Geneva 4 (Switzerland)
Publication Date:
OSTI Identifier:
20795715
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevD.73.023523; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CORRELATION FUNCTIONS; COSMOLOGY; DISTANCE; ENERGY SPECTRA; FLUCTUATIONS; GRAVITATION; NONLUMINOUS MATTER; POTENTIALS; UNIVERSE; VISIBLE RADIATION

Citation Formats

Bonvin, Camille, Durrer, Ruth, and Gasparini, M. Alice. Fluctuations of the luminosity distance. United States: N. p., 2006. Web. doi:10.1103/PHYSREVD.73.0.
Bonvin, Camille, Durrer, Ruth, & Gasparini, M. Alice. Fluctuations of the luminosity distance. United States. doi:10.1103/PHYSREVD.73.0.
Bonvin, Camille, Durrer, Ruth, and Gasparini, M. Alice. Sun . "Fluctuations of the luminosity distance". United States. doi:10.1103/PHYSREVD.73.0.
@article{osti_20795715,
title = {Fluctuations of the luminosity distance},
author = {Bonvin, Camille and Durrer, Ruth and Gasparini, M. Alice},
abstractNote = {We derive an expression for the luminosity distance in a perturbed Friedmann universe. We define the correlation function and the power spectrum of the luminosity distance fluctuations and express them in terms of the initial spectrum of the Bardeen potential. We present semianalytical results for the case of a pure CDM (cold dark matter) universe. We argue that the luminosity distance power spectrum represents a new observational tool which can be used to determine cosmological parameters. In addition, our results shed some light into the debate whether second order small scale fluctuations can mimic an accelerating universe.},
doi = {10.1103/PHYSREVD.73.0},
journal = {Physical Review. D, Particles Fields},
number = 2,
volume = 73,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}