Brief Note: Analytical Fit to the Luminosity Distance for Flat Cosmologies with a Cosmological Constant

Preprint

13 April 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9904172

Abstract

We present a fitting formula for the luminosity and angular diameter distances in cosmological models with pressureless matter, a cosmological constant and zero spatial curvature. The formula has a relative error of less than 0.4% for 0.2<\Omega_0<1 for any redshift, and a global relative error of less than 4% for any choice of parameters.

Keywords

COSMOLOGICAL CONSTANT
LUMINOSITY DISTANCE
FLAT COSMOLOGIES
ANALYTICAL FIT
BRIEF NOTE
FORMULA

All Related Versions

Version 1, 1999-04-13, ArXiv
Published version: The Astrophysical Journal Supplement Series, 120 (1), 49.

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