Radio sources with superluminal velocities

Details Radio sources with superluminal velocities Radio sources with superluminal velocities

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.268..405c&link_type=abstract

Nature, vol. 268, Aug. 4, 1977, p. 405-409. NSF-supported research.

Mathematics

Logic

133

Extragalactic Radio Sources, Light Speed, Quasars, Radio Galaxies, Big Bang Cosmology, Brightness, Interferometry, Red Shift

Scientific paper

Observed variations concerning the brightness distributions in four extragalactic radio sources were so rapid that the apparent transverse velocity of expansion is greater than the velocity of light. The term superluminal is used to describe this phenomenon. A review is provided of the observations of superluminal expansions. Attention is given to four sources including three quasars (3C345, 3C273, and 3C279) and one radio galaxy (3C120). The significance of the observations is evaluated. The fact that the superluminal effect has been seen in a galaxy as well as in three quasars suggests that it cannot be used as evidence against a cosmological origin for the redshifts.

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