Rapidly Changing Radio Images

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Science  06 Aug 1971:
Vol. 173, Issue 3996, pp. 525-528
DOI: 10.1126/science.173.3996.525


Differences in total transit time can give rise to images that expand at arbitrarily high speed. Two versions of a model based on this idea can account for the varying microwave structure reported for the quasar 3C 279. Other possible examples are suggested.

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