Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-07-27
Astrophys.SpaceSci.311:335-339,2007
Astronomy and Astrophysics
Astrophysics
5 pages, accepted for publication in Astrophysics and Space Science
Scientific paper
10.1007/s10509-007-9539-z
We investigate the total kinetic powers (L_{j}) and ages (t_{age}) of powerful jets of four FR II radio sources (Cygnus A, 3C 223, 3C 284, and 3C 219) by the detail comparison of the dynamical model of expanding cocoons with observed ones. It is found that these sources have quite large kinetic powers with the ratio of L_{j} to the Eddington luminosity (L_{Edd}) resides in $0.02
Isobe Naoki
Ito Hiroyuki
Kawakatu Nozomu
Kino Motoki
Yamada Shoichi
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