The VSOP 5 GHz Active Galactic Nucleus Survey: V. Imaging Results for the Remaining 140 sources

TL;DR

This paper presents high-resolution imaging and modeling results for 140 active galactic nuclei observed at 5 GHz using the HALCA satellite as part of the VSOP survey, expanding the dataset of compact AGN structures.

Contribution

It provides new VLBI images, model fits, and brightness temperature measurements for 140 AGN sources, complementing previous survey data and enhancing understanding of AGN core properties.

Findings

Brightness temperature distributions analyzed for all sources.

High-resolution images and uv-coverage plots provided.

Model parameters for radio components determined.

Abstract

In February 1997, the Japanese radio astronomy satellite HALCA was launched to provide the space-bourne element for the VLBI Space Observatory Programme (VSOP) mission. Approximately twenty-five percent of the mission time was dedicated to the VSOP Survey of bright compact Active Galactic Nuclei (AGN) at 5 GHz. This paper, the fifth in the series, presents images and models for the remaining 140 sources not included in Paper III, which contained 102 sources. For most sources, the plots of the uv-coverage, the visibility amplitude versus uv-distance, and the high resolution image are presented. Model fit parameters to the major radio components are determined, and the brightness temperature of the core component for each source is calculated. The brightness temperature distributions for all of the sources in the VSOP AGN survey are discussed.