Article (Scientific journals)
Whatever happened to the Dyer-Roeder distance?
Helbig, Phillip
2020In The Observatory, 140 (1277), p. 128-144
Peer reviewed
 

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Keywords :
cosmology: history; cosmology: distance calculation; cosmology: theory
Abstract :
[en] The Universe is not completely homogeneous. Even if it is sufficiently so on large scales, it is very inhomogeneous at small scales, and this has an effect on light propagation, so that the distance as a function of redshift, which in many cases is defined via light propagation, can differ from the homogeneous case. Simple models can take this into account. One such model is known as the Dyer–Roeder distance. I sketch the history of this model and some applications, then suggest some reasons why it is still relatively obscure.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Helbig, Phillip  ;  Université de Liège - ULiège > STAR
Language :
English
Title :
Whatever happened to the Dyer-Roeder distance?
Publication date :
01 August 2020
Journal title :
The Observatory
ISSN :
0029-7704
Volume :
140
Issue :
1277
Pages :
128-144
Peer reviewed :
Peer reviewed
Commentary :
This text is an `executive summary' of and borrows heavily from my recent review of this topic
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since 04 August 2020

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