Premium
Expansion velocities and kinematic ages of Compact Symmetric Objects
Author(s) -
Polatidis A.G.
Publication year - 2009
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200811143
Subject(s) - kinematics , physics , geodesy , geology , geometry , classical mechanics , mathematics
The measurement of expansion velocities in Compact Symmetric Objects, and the calculation of their kinematic ages, showed that the age of these radio sources was of the order of a few hundred to a few thousand years. Further monitoring has proven this trait, but there are also indications of recurrent activity in some CSOs. However, there are many cases where accurate kinematic measurements are not easy to obtain (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)