This article is cited in 2 papers

METHODOLOGICAL NOTES

The Hubble flow: an observer's perspective

A. V. Toporensky, S. B. Popov

Sternberg Astronomical Institute, Lomonosov Moscow State University

Abstract: This paper discusses some aspects of cosmological expansion as viewed by an observer. It identifies the rate of change of the angular distance $v_\Theta$ with respect to the observer's clock as a crucial quantity in properly understanding the expansion. Using this quantity and the angular distance, in addition to the traditional approach to visualization, provides a more vivid picture of the cosmological expansion and is key for adequately visualizing it.

PACS: 98.62.Py, 98.80.-k, 98.80.Es

Received: September 2, 2013
Revised: October 15, 2013
Accepted: October 15, 2013

DOI: 10.3367/UFNr.0184.201407f.0767

 English version: Physics–Uspekhi, 2014, 57:7, 708–713

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