Proposal code

w426

Proposal title

Dual-Frequency VSOP Observations of PKS 1741-038

The

Investigators and their

Affiliations

P.I. Kiyoaki WAJIMA ISAS, JAPAN
Hideyuki KOBAYASHI NAO, JAPAN
Kenta FUJISAWA NAO, JAPAN
Yasuhiro MURATA ISAS, JAPAN
Hisashi HIRABAYASHI ISAS, JAPAN

Proposal Abstract

We propose dual-frequency observations of the gamma-ray loud quasar PKS 1741-038. Recently Zhou et al. (2000) revealed correlation between the radio flare and emergence of VLBI jet component in the gamma-ray loud blazar PKS 0420-014. Trichromatic light curves of PKS 1741-038 show that the source has the biggest flare near the middle of 1997, and also has large lags between individual light curves. We carried out two-epoch VSOP observations (first-epoch observation was done near the flare) and revealed that the source has brightness temperatures greater than 10^{12} K for all observing sessions. Then we can investigate following source properties at and after the flare; (1) verification for emergence of jet components with radio flares and proper motion measurement, (2) brightness temperature and Doppler factor variation measurements.

The full Cover Sheets (compressed post-script, typically 50kbytes) can be retrieved. Note that some 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 AO4 proposals were submitted in October 2000, and information such as affiliations and contact details has changed for some proposers since that time.