A1 Refereed original research article in a scientific journal
Mattig's relation and dynamical distance indicators
Authors: Teerikorpi P, Baryshev YV
Publisher: WILEY-V C H VERLAG GMBH
Publication year: 2016
Journal: Astronomical Notes / Astronomische Nachrichten
Journal name in source: ASTRONOMISCHE NACHRICHTEN
Journal acronym: ASTRON NACHR
Volume: 337
Issue: 3
First page : 315
Last page: 317
Number of pages: 3
ISSN: 0004-6337
eISSN: 1521-3994
DOI: https://doi.org/10.1002/asna.201512307
Abstract
We discuss how the redshift (Mattig) method in the Friedmann cosmology relates to dynamical distance indicators based on Newton's gravity (Teerikorpi 2011). It belongs to the class of indicators where the relevant length inside the system is the distance itself (in this case the proper metric distance). As the Friedmann model has a Newtonian analogy, its use to infer distances has instructive similarities to classical dynamical distance indicators. In view of the theoretical exact linear distance-velocity law, we emphasize that it is conceptually correct to derive the cosmological distance via the route: redshift (primarily observed). space expansion velocity (not directly observed). metric distance (physical length in "cm"). Important properties of the proper metric distance are summarized. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
We discuss how the redshift (Mattig) method in the Friedmann cosmology relates to dynamical distance indicators based on Newton's gravity (Teerikorpi 2011). It belongs to the class of indicators where the relevant length inside the system is the distance itself (in this case the proper metric distance). As the Friedmann model has a Newtonian analogy, its use to infer distances has instructive similarities to classical dynamical distance indicators. In view of the theoretical exact linear distance-velocity law, we emphasize that it is conceptually correct to derive the cosmological distance via the route: redshift (primarily observed). space expansion velocity (not directly observed). metric distance (physical length in "cm"). Important properties of the proper metric distance are summarized. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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