Proposal code

w330

Proposal title

Complementary Multi-Frequency GPS Survey

The

Investigators and their

Affiliations

P.I. Seiji Kameno VSOP Project, NAO Japan
Kiyoaki Wajima VSOP Project, ISAS Japan
Shen Zhi-Qiang VSOP Project, NAO Japan
Makoto Inoue VSOP Project, NAO Japan
Satoko Sawada-Satoh VSOP Project, NAO Japan

Proposal Abstract

GHz-Peaked Spectrum (GPS) sources are compact powerful radio emitters which have spectral peak at GHz frequency, and are considered to be at a young stage of evolution. Our VSOP observations for a GPS source OQ 208 showed that the rising spectrum at lower frequency side is due to free-free absorption by ambient plasma. We are conducting a GPS survey project for 19 samples at 5 frequencies using VSOP and VLBA to examine how common is FFA towards GPSs. We have observed 9 samples at 3 frequencies with VLBA. VSOP observation for 9 samples has also been done or scheduled. Here we propose complementary observations for the rest 28 VSOP experiments which consist of 10 and 18 observations at 1.6 and 5 GHz, respectively, to fill blanks in our survey.

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 AO3 proposals were submitted in October 1999, 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.