By using analytical model of cocoon expansion, we examine the total power and age of jets in five FRII radio galaxies. The estimated total power is quite larger than those estimated in previous works based on observation of non-thermal emission from electrons. This might imply that the amount of unobservable particles (e.g. protons and thermal component) can not be ignored when considering jet dynamics.
ASJC Scopus subject areas
- Physics and Astronomy(all)