Proposal code

w080

Proposal title

Monitoring of Helical Structure in 1156+295 at 5 & 1.6 GHz

The

Investigators and their

Affiliations

P.I. G. A. Moellenbrock ISAS, Japan
X. Y. Hong Shanghai Observatory, China
L. I. Gurvits, M. A. Garrett JIVE, The Netherlands
P. G. Edwards, ISAS, Japan
R. D. Nan Beijing Observatory, China
D. H. Roberts, J. F. C. Wardle Brandeis University, USA

Proposal Abstract

We propose multi-epoch 5 and 1.6 GHz polarization-sensitive VSOP observations of the superluminal gamma-ray blazar 1156+295. In the context of a helical jet model, these high resolution observations at moderate and low frequencies will better characterize the complex bends evidenced in ground-based VLBI on scales <1 and up to ~15 milliarcseconds from the core. Combined with spectral information obtained from ground-only VLBI at matched resolution, the polarization measurements will aid local jet direction determination, and allow diagnosis of shocks (in contrast to helical pattern structure) and other physical properties of the emitting material. The relationship of this complex structure to the likelihood of gamma-ray emission will also be investigated.

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.