Proposal code
w308
Proposal title
Monitoring PKS 1413+135 For Superluminal Motion
The |
Investigators and their |
Affiliations |
| P.I. |
Anthony H. Minter |
National Radio Astronomy Observatory, U.S.A. |
| |
Glen Langston |
National Radio Astronomy Observatory, U.S.A. |
| |
Frank Ghigo |
National Radio Astronomy Observatory, U.S.A. |
| |
Eric Perlman |
Space Telescope Science Institute, U.S.A. |
Proposal Abstract
We propose multi-epoch observations of PKS 1413+135 to determine
if superluminal motion is present in this source. These observations will
determine whether this object is a young or ``frustrated'' AGN with a two
sided jet. If the jet is confined it must be decelerating. Radio monitoring
data indicate that PKS 1413+135 is highly variable, a common feature of
sources exhibiting superluminal motion.
Ground based observations suggest, but do not conclusively prove,
that superluminal
motion may be present in PKS 1413+135, but they do prove conclusively
that evolution is occuring on both sides of the core. Very few AGN
show evolution on both sides of the core.
Observations with HALCA provide
enough resolution to detect even modestly superluminal motion. A finding of
superluminal motion, particularly on both sides of the core,
would be difficult to reconcile with
``unified'' schemes for AGN.
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therefore have changed.