Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (36) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The redshift-distance and velocity-distance laws
Authors:
Harrison, Edward
Affiliation:
AA(Massachusetts Univ., Amherst)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 403, no. 1, p. 28-31. (ApJ Homepage)
Publication Date:
01/1993
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Computational Astrophysics, Cosmology, Distance, Red Shift, Universe, Astronomical Models, Hubble Constant
DOI:
10.1086/172179
Bibliographic Code:
1993ApJ...403...28H

Abstract

The distinction between Hubble's linear redshift-distance z(L) law and the linear velocity-distance V(L) law that emerged later is discussed, using first the expanding space paradigm and then the Robertson-Walker metric. The z(L) and V(L) laws are theoretically equivalent only in the limit of small redshifts, and failure to distinguish between the two laws obscures the basic elementary principles of modern cosmology. The linear V(L) law (V = HL, where H(t) is the Hubble term) applies quite generally in expanding homogeneous and isotropic cosmological models, and recession velocities can exceed the velocity of light. The z(L) relation in its linear form (cz = HL), however, has no theoretical basis and can be used only in the limit of small redshifts. Possible historical reasons for the confusion between the z(L) and V(L) laws, and why both are indiscriminately referred to as Hubble's law, are discussed.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints