From 1994 to 2002 we used the NRAO's Very Long Baseline Array for an
imaging survey of 176 compact extragalactic radio sources associated
with Active Galactic Nuclei (AGN) at 15 GHz. The primary
scientific goals were: - Morphology of parsec-scale structures
- Statistics of apparent superluminal motions
-
Improved resolution over surveys at other wavelengths
- Tests of
relativistic beaming models
- Cosmological tests
The observations were performed in a "snapshot" observing mode
(1 scan per hour of 4-5 minute duration, over a 8 hour period).
We achieved a dynamic range of typically exceeding 1000:1, with a
typical noise limit (rms) of 0.35 milli-Jansky.
MOJAVE
(Monitoring of Jets in Active
Galaxies with VLBA Experiments) is the continuation
of the 2cm Survey Effort, with a redefinition of the survey
sample.
As a service to the scientific community, we are making the
images from both surveys available for download on the MOJAVE website.