Author/Authors :
R.T. Schilizzi، نويسنده , , W. Tschager، نويسنده , , I.A.G. Snellen، نويسنده , , A.G. de Bruyn، نويسنده , , G.K. Miley، نويسنده , , H.J.A. R?ttgering، نويسنده , , H.J. van Langevelde، نويسنده , , C. Fanti، نويسنده , , R. Fanti، نويسنده ,
Abstract :
We have analysed HALCA and global VLBI data for 2021+614, the first of eleven GPS quasars and galaxies to be observed by HALCA. We show that 2021+614 is a compact symmetric object of overall size ∼40 pc, and confirm that the speed of separation of the two dominant lobes is approximately one tenth of the speed of light. Its apparent age of less than 1000 years provides additional support for the contention that compact symmetric radio objects associated with galaxies are young radio sources and the possible precursors of the classical FR1 or FR2 radio galaxies.
