Proposal code

w091

Proposal title

VSOP Observations of AO 0235+164: extreme high-speed jet?

The

Investigators and their

Affiliations

P.I. Kenta Fujisawa ISAS, Japan
H.Kobayashi, H.Hirabayashi ISAS, Japan
K. Wajima Ibaraki Univ., Mito, Japan
S. Kameno, M. Inoue, S. Iguchi NAO, Mitaka, Japan

Proposal Abstract

BL Lac object AO 0235+164 is a strong variable Active Galactic Nuclei (AGNs) from radio to gamma-ray energy band. A number of VLBI studies showed the source has a very compct (<0.1 mas) core and weak jet component with fast expansion speed. We have shown that the source possibly has Doppler factor delta \ge 119, which is the largest known delta to date. This large delta, suggesting very high-speed jet, could be the cause of variability and other activities. We propose VSOP monitoring observations of 0235+164 which allow us to detect the possible high-speed jet as very fast superluminal motion. We can test the jet acceleration and propagation mechanisms with such high-speed jet.

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.