Kinematic and Synchrotron Ages of Compact Symmetric Objects

Details Kinematic and Synchrotron Ages of Compact Symmetric Objects Kinematic and Synchrotron Ages of Compact Symmetric Objects

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..386..290n&link_type=abstract

Extragalactic Jets: Theory and Observation from Radio to Gamma Ray ASP Conference Series, Vol. 386, proceedings of the conferenc

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present the measurements of kinematic and synchrotron ages of the Compact Symmetric Objects CTD 93 and 3C 84. With VLBA observations, we found kinematic ages of 2200±700 yr and 33±5 yr (in 2000) for CTD 93 and 3C 84, respectively. Multifrequency observation revealed distribution of break frequency of the synchrotron spectra. Assuming the minimum-energy field, the resultant synchrotron ages are 1720±40 yr and 24+14-5 yr (in 1995) for CTD 93 and 3C 84, respectively. The overall results are consistent with the hypothesis that CSOs are young radio sources. Agreements between kinematic and synchrotron ages may imply that the magnetic field in CSOs is not so far from the minimum-energy condition.

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