pith. sign in

arxiv: astro-ph/0511183 · v5 · pith:AMVHJJGHnew · submitted 2005-11-07 · 🌌 astro-ph · gr-qc

Fluctuations of the luminosity distance

classification 🌌 astro-ph gr-qc
keywords distanceluminosityfluctuationsspectrumuniversepowerresultsaccelerating
0
0 comments X
read the original 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 semi-analytical results for the case of a pure CDM 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.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Prospect of Measuring the Cosmic Dipole by Strongly Lensed Gravitational Waves Associated with Galaxy Surveys

    astro-ph.CO 2026-05 unverdicted novelty 7.0

    Simulations forecast that 10 years of Einstein Telescope and Cosmic Explorer data could detect the cosmic dipole magnitude using strongly lensed GW events, with tighter bounds from combining double, triple, and quadru...