Proposal code

w047

Proposal title

The Gravitational Lens 0957+561 and the Hubble Constant

The

Investigators and their

Affiliations

P.I. Shapiro, Irwin I. Center for Astrophysics, USA
Lehar, Joseph Center for Astrophysics, USA
Murphy, David W. and Preston, Robert A. Jet Propulsion Laboratory, USA

Proposal Abstract

when printed. Start abstract on next line. We propose L-band VLBI observations, of the gravitational lens system 0957+561, with Halca and large ground-based antennas. The goal of these observations is to determine the Hubble constant to an accuracy of 10 other data obtained at x-ray to radio wavelengths.

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.