The distribution of radio plasma in time and space
2005 ◽
Vol 363
(1828)
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pp. 645-654
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Keyword(s):
The Past
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The influence of jet–ejected plasma has been an important theme of this meeting; I draw attention to the prevalence of jet–ejected plasma, in particular that which has not been properly accounted for in the past. There are three strands to this paper: important emission which is prominent only at the lowest radio frequencies; relic radio plasma which must exist if even the most basic aspects of radio source evolutionary models are correct; and evidence that some ‘radio–quiet’ quasars could be FR–I radio sources.