Proposal code

v127

Proposal title

Deep Interferometric VSOP-Arecibo Survey

The

Investigators and their

Affiliations

P.I. H.~Hirabayashi ISAS (Japan)
J.Ulvestad, R.Preston, A.Wiercigroch, D.Murphy JPL (U.S.A.)
L. Gurvits JIVE (The Netherlands)
T. Ghosh, C. Salter, D. Altschuler NAIC, Arecibo Observatory (Puerto Rico)
H. Kobayashi, K. Fujisawa, P. Edwards ISAS (Japan)
A. Patnaik MPIfR (Germany)

Proposal Abstract

We propose observations of a faint population of flat-spectrum sources in the declination range accessible to the Arecibo telescope, providing the highest possible space VLBI sensitivity at 5 GHz. We select flat-spectrum (alpha>= -0.5 between 1.4 and 5 GHz) sources which have 5-GHz flux densities greater than 50 mJy. This flux-density limit is a factor of 20 beneath the lower limit for sources in the VSOP (continuum) Survey Program. About 160 candidate sources are included, and we desire to observe a randomly selected sample of at least 75 objects. Statistical results on the source structures ( e.g., brightness temperatures, sizes, fraction of the source flux densities in components detectable on space-ground baselines) will be compared to the results of the VSOP Survey Program to determine whether there are systematic differences in the compact structures of sources over a range of nearly two orders of magnitude in flux density.

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.