Proposal code

v078

Proposal title

Monitoring of the BL Lac object OJ287

The

Investigators and their

Affiliations

P.I. Patrick Charlot Paris Observatory, France
Hélène Sol Meudon Observatory, France
Lourdes Vicente Meudon Observatory, France

Proposal Abstract

Our proposal consists in a monitoring program of observations of the BL Lac object OJ287 at 5 GHz (experiment 1), supplemented by a single-epoch multi-frequency observation of OJ287 (experiments 2 and 3). The major goal of the monitoring observations is to confirm the helical path of the jet which we suspect based on intensive monitoring with 8.4 GHz geodetic VLBI data. The multi-frequency observation is designed to determine the spectral index along the jet. The 22 GHz experiment, by providing a resolution of 50 micro-as, can also serve to estimate an upper limit or measure the jet radius. Our experiments require only few large telescopes since the source is strong enough. The suggested ground VLBI network is given in (14).

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.