Proposal code
w313
Proposal title
High-Brightness Objects in the Pearson-Readhead AGN Survey
The |
Investigators and their |
Affiliations |
| P.I. |
R. A. Preston |
JPL, USA |
| |
M. L. Lister, D. W. Murphy, B. G. Piner, D. L. Jones, D. L. Meier |
JPL, USA |
| |
S. J. Tingay |
ATNF, Australia |
| |
H. Hirabayashi, Y. Murata |
ISAS (Japan) |
| |
H. Kobayashi |
NAO (Japan) |
| |
M. Inoue |
NRO (Japan) |
Proposal Abstract
Our space-VLBI observations of compact sources in the Pearson-Readhead
survey have revealed five AGNs with rest-frame brightness temperatures
(\rm T_b's) exceeding 3 \times 10^{12} K. These high-brightness
objects (HBOs) are likely are likely to have the highest Doppler
factors in the sample, and should therefore be representive of some of
the fastest, most aligned jets in the Pearson-Readhead parent
population. We propose to re-observe these rare objects with HALCA at
1.6 and 5 GHz, with the best ground array possible, in order to
investigate structural variations, and the dependence of \rm T_b on
time and observing frequency. We will use also use our images to test
statistical beaming models, which predict extremely small jet viewing
angles for these HBOs. We believe these observations will help
achieve one of the main goals of the VSOP mission, which is to gain a
better understanding of ultra-compact, highly beamed AGNs.
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 AO3 proposals were submitted in October 1999,
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.