Proposal code
v041
Proposal title
Self-similarity in the Jets of the S5-quasars 0836+71 and 1928+73
The |
Investigators and their |
Affiliations |
| P.I. |
T.P. Krichbaum |
MPIfR, Bonn, Germany |
| |
A. Witzel |
MPIfR, Bonn, Germany |
| |
K. Otterbein |
MPIfR, Bonn, Germany |
| |
K. Johnston, C. Hummel |
USNO, Washington, DC., USA |
| |
J.A. Zensus |
NRAO, Charlottesville, USA |
Proposal Abstract
Since more than 15 years, we monitored pc-structure and evolution of the prominent kpc-jets in
the S5-quasars 0836+71 and 1928+73. Both sources are members
of a flux density limited complete sample of 13 flat spectrum radio sources, for which
we have data from radio to gamma-ray bands. Complex superluminal kinematics
and jet-morphologies characterize both objects.
We propose multi-frequency &
multi-epoch space-VLBI imaging with high dynamic range, to study in detail
the spectral and kinematic properties of these jets with highest spatial resolution,
in particular the evolution in time & frequency of the instability-patterns
observed in both jets. With this we hope to decide
if the jet-physics is governed by
the magnetic field or by `standard' relativistic gas dynamics (MHD-jet or KH-jet ?) and
if the moving jet-oscillations in the jet of 1928+738
are driven by a binary black hole at its base (jet-precession ?).
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