Bibcode
Agudo, I.; Bach, U.; Krichbaum, T. P.; Marscher, A. P.; Gonidakis, I.; Diamond, P. J.; Perucho, M.; Alef, W.; Graham, D. A.; Witzel, A.; Zensus, J. A.; Bremer, M.; Acosta-Pulido, J. A.; Barrena, R.
Referencia bibliográfica
Astronomy and Astrophysics, Volume 476, Issue 3, December IV 2007, pp.L17-L20
Fecha de publicación:
12
2007
Revista
Número de citas
71
Número de citas referidas
60
Descripción
Context: NRAO 150, a compact and bright radio to mm
source showing core/jet structure, has been recently identified as a
quasar at redshift z = 1.52 through a near-IR spectral observation. Aims: To study the jet kinematics on the smallest accessible scales
and to compute the first estimates of its basic physical properties. Methods: We have analysed the ultra-high-resolution images from a new
monitoring program at 86 GHz and 43 GHz with the Global mm VLBI Array
and the VLBA, respectively. An additional archival calibration VLBA data
set, covering the period from 1997 to 2007, has been used. Results: Our data show an extreme projected counter-clockwise jet
position angle swing at an angular rate of up to ≈11° yr within
the inner ≈ 3 pc of the jet, which is associated with a non-ballistic
superluminal motion of the jet within this region. Conclusions:
The results suggest that the magnetic field could play an important role
in the dynamics of the jet in NRAO 150, which is
supported by the large values of the magnetic field strength obtained
from our first estimates. The extreme characteristics of the jet swing
make NRAO 150 a prime source to study the jet
wobbling phenomenon.
Tables 1-3 and the movie are only available in electronic form at
http://www.aanda.org