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Published 1988 | Published
Book Section - Chapter Open

Expanding Quasars and the Expansion of the Universe

Abstract

The μ–z diagram (Figure 1) plots the observed internal proper motion μ versus redshift z for 32 extragalactic radio sources associated with active galactic nuclei. The observed points fall below an upper bound which decreases with redshift; there is a statistically significant anticorrelation between redshift and internal proper motion.

Additional Information

© 1988 by the IAU. An earlier version of this work was published by Cohen 1987, in Superluminal Radio Sources, ed. Zensus and Pearson (Cambridge: Cambridge University Press).

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Created:
August 19, 2023
Modified:
February 10, 2024