Physics
Scientific paper
Apr 1967
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967natur.214..256c&link_type=abstract
Nature, Volume 214, Issue 5085, pp. 256-257 (1967).
Physics
13
Scientific paper
THE observations of Sandage1 and of Kinman et al.2 have shown that the optical brightness of the quasar 3C 446 is variable. This quasar has been observed as part of a programme of optical monitoring of quasars at the Royal Greenwich Observatory. Our results show a continuation of the earlier behaviour and lead to the speculation that the variation is caused by the occultation of the quasar by absorbing clouds in its vicinity.
Cannon Russell D.
Penston Michael V.
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