, Volume 43, Issue 1, pp 337-358,
Open Access This content is freely available online to anyone, anywhere at any time.
Date: 13 Nov 2010

Republication of: Observations in cosmology


This is a reprinting of a paper by Jerome Kristian and Rainer K. Sachs, first published in 1966, in which they proposed a power-series scheme for reading out various parameters of the Universe directly from observations in a model-independent way. The paper has been selected by the Editors of General Relativity and Gravitation for re-publication in the Golden Oldies series of the journal. This republication is accompanied by an editorial note written by George Ellis and by a brief biography of J. Kristian, compiled by A. Krasiński from internet sources.

Editorial responsibility: A. Krasiński, e-mail: akr@camk.edu.pl.
An editorial note to this paper and a biography can be found in this issue preceding this Golden Oldie and online via doi:10.1007/s10714-010-1112-3.
Original paper: Astrophysical Journal 143, 379–399 (1966). Reprinted with the kind permission of the American Astronomical Society and of R. K. Sachs. J. Kristian died before the paper was selected for the Golden Oldies.
(Deceased June 22, 1996)