2005MNRAS.364..659K

Query : 2005MNRAS.364..659K

2005MNRAS.364..659K - Mon. Not. R. Astron. Soc., 364, 659-664 (2005/December-1)

Estimate of the total kinetic power and age of an extragalactic jet by its cocoon dynamics: the case of Cygnus A.

KINO M. and KAWAKATU N.

Abstract (from CDS):

We examine the constraints imposed on the total kinetic power (Lj) and the age (tage) of relativistic jets in Fanaroff-Riley type II radio sources in a new way. We solve the dynamical expansion of its cocoon embedded in the intracluster medium and obtain the analytical solution of its physical quantities in terms of Ljand tage. We estimate Ljand tageusing a comparison of the model and the observed shape of the cocoon. The analysis focuses on Cygnus A and we find that (i) the source age is 3 < tage< 30 Myr and (ii) the total kinetic power of the jet is estimated as 0.2x1046 < Lj< 1x1048 erg/s, which is larger than 1 per cent of the Eddington luminosity of Cygnus A.

Abstract Copyright: 2005 The Authors. Journal compilation © 2005 RAS

Journal keyword(s): plasmas - radiation mechanisms: non-thermal - galaxies: active - galaxies: individual: Cygnus A

CDS comments: In Chap. 2.3 : CSO 2352+495 = BWE 2352+4933.

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
2 6C 235239+493337 BLL 23 55 09.45814429 +49 50 08.3394994   21.101   18.400   ~ 284 1

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