Proposal code
v001
Proposal title
3C446: Mapping the Bent Jet in the 100-micro-as to 3-mas Region
The |
Investigators and their |
Affiliations |
| P.I. |
Alexandria B. Wiercigroch |
Jet Propulsion Laboratory |
| |
James S. Ulvestad |
Jet Propulsion Laboratory |
Proposal Abstract
We propose 5-GHz and 22-GHz VSOP observations of the optically violent variable
3C 446. This quasar (z = 1.4) is a very luminous X-ray
and radio source; ground VLBI observations have shown a strongly curved jet that is
misaligned with the large-scale jet structure.
A comparison of 5-GHz and 100-GHz ground VLBI maps shows that the jet's
position angle rotates by ~130 degrees between the 100-micro-as and several-mas scales.
This may be caused by a nearly end-on jet following a helical path near the observer's line of sight.
We will map with very fine resolution the bending of the jet in this
region, model the jet dynamics, and compare the morphology that we find with
other objects with similar jet properties.
Nearly contemporaneous 43-GHz VLBA observations will be proposed separately
to help determine the frequency at which
the core becomes optically thin and to provide complementary measurements of
the jet's spectral index.
The full Cover Sheets (compressed post-script, typically 50kbytes)
can be retrieved.
Note that many proposals were reduced in extent by the Scientific Review Committee
(e.g. by reducing the number of experiments), however the Cover Sheets contain
the full proposal as submitted.
Also note that AO1 proposals were submitted in November 1995, and information such
as affiliations and contact details has changed for some proposers since that time.
The Cover Sheets (and the details on this page, which were derived from the Cover Sheets)
may therefore have changed.