Proposal code

w027

Proposal title

Continuous Monitoring of 1928+738

The

Investigators and their

Affiliations

P.I. D. W. Murphy JPL, USA
J. E. Conway, A. Polatidis Onsala Space Observatory, Sweden
R. A. Preston, S. J. Tingay, D. L. Jones, D. L. Meier JPL, USA
H. Hirabayashi, H. Kobayashi, Y. Murata ISAS, Japan

Proposal Abstract

One of the most valuable results of the VSOP mission will be an uninterrupted series of images for a few sources over the mission lifetime. Such continuous monitoring is only possible for a small region of the sky. We propose to continue our 5 GHz monitoring campaign on the superluminal quasar 1928+738 which we began during the first AO period and to start a monitoring campaign at 1.6 GHz. We hope to confirm or reject the hypothesis that the observed wiggle in the jet is caused by the orbital motion of a massive binary black hole system. Analysis of two epochs of AO1 data show that this source does exhibit interesting structural changes with time. More data is needed to constrain the theoretical modeling of this source.

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 AO2 proposals were submitted in May 1998, 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.