A Cosmology Calculator for the World Wide Web

A cosmology calculator that computes times and distances as a function of redshift for user‐defined cosmological parameters has been made available online. This paper gives the formulae used by the cosmology calculator and discusses some of its implementation. A version of the calculator that allows...

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Bibliographic Details
Published in:Publications of the Astronomical Society of the Pacific 2006-12, Vol.118 (850), p.1711-1715
Main Author: Wright, E. L.
Format: Article
Language:English
Subjects:
Approximation
Astronomical objects
Astronomy
Calculators
Cosmological models
Earth, ocean, space
Exact sciences and technology
Luminosity
Neutrino masses
Neutrinos
Red shift
Supernovae
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Summary:A cosmology calculator that computes times and distances as a function of redshift for user‐defined cosmological parameters has been made available online. This paper gives the formulae used by the cosmology calculator and discusses some of its implementation. A version of the calculator that allows one to specify the equation‐of‐state parameterwand \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $w^{\prime }$ \end{document} , and one for converting the light‐travel times usually given in the popular press into redshifts, is also located at the same site.
ISSN:0004-6280
1538-3873
DOI:10.1086/510102