Proposal code
v054
Proposal title
Cores of Lobe-dominated Quasars
The |
Investigators and their |
Affiliations |
| P.I. |
R.W.Porcas |
MPIfR, Bonn, Germany |
| |
J.A.Zensus |
NRAO, Charlottesville, VA, USA |
| |
D.H.Hough |
Trinity University, San Antonio, TX, USA |
Proposal Abstract
The study of the parsec-scale morphology and kinematics of quasars
is central to the understanding of extragalactic radio source jet
physics, and the classification of various types of objects. In
the "unified schemes" a central tenet is that the
properties of sources depend crucially upon the angle of a
relativistically moving plasma beam with respect to the
line of sight. Core-dominated radio sources should
show properties corresponding to a source axis nearly pointing at the
observer - superluminal motion, exaggeration of small bends,
and strong and variable cores. In contrast, in lobe-
dominated quasars, these properties should be weak or absent. We wish
to observe a small sample of three quasars of this latter type, to
compare their sub-mas structures (as measured with
VSOP-ground baselines) with those of the stronger core-dominated
quasars. Our sources are at high declinations, and are thus ideal
for efficient use of VSOP-GRT time.
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