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arXiv · 1311.2472

The Hubble flow: an observer's perspective

A. V. Toporensky·S. B. Popov
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Abstract

In this methodological note we discuss some details and peculiarities of the cosmic expansion as viewed by a realistic observer. We show that the velocity $v_\Theta$ related to a change (measured by observer's clock) of the angular distance, plays an important role in formation of a meaningful observed picture of the expansion of the universe. Usage of this velocity and the angular distance (in addition to the standard approach --- proper distance and corresponding velocity) allows to present the cosmic expansion in a more illustrative manner. These parameters play a key role in visualization of the expansion.

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A. V. Toporensky, S. B. Popov. 2013-11-05. The Hubble flow: an observer's perspective. https://doi.org/10.3367/ufne.0184.201407f.0767

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