Proposal code

w009

Proposal title

Brightness Temperatures of the Most Compact TDRSS Sources

The

Investigators and their

Affiliations

P.I. Roger P. Linfield Jet Propulsion Laboratory, USA
James S. Ulvestad National Radio Astronomy Observatory, USA

Proposal Abstract

We propose to complete our VSOP imaging of the four most compact sources observed at 2.3 GHz in the TDRSS space VLBI observations by observing the two remaining sources: 1921-293 and 2216-038. Our purpose is to make accurate measurements of the brightness temperatures of these sources at both 1.6 and 5 GHz. By observing with the VLBA on the ground, our calibration accuracy (due to uniform, well-understood ground antennas, and to the multiple crossing points available with good u-v coverage) will be superior to that expected for the VSOP survey. For the most compact sources, good calibration accuracy on the longest space-ground baselines is crucial in making accurate brightness temperature measurements. Our proposal (in the first AO period) for the other two sources, 0420-014 and 1519-273 was accepted, and the observations have been scheduled.


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.