The latest results from the Global mm-VLBI Array

TL;DR

The paper reports recent advancements and imaging results from the Global mm-VLBI Array, highlighting its high angular resolution capabilities and recent extensions to include the Korean VLBI Network for improved baseline coverage.

Contribution

It presents new high-resolution images of gamma-ray blazars and updates on the GMVA's capabilities, including the integration of the Korean VLBI Network.

Findings

High-resolution images of gamma-ray blazars like 3C454.3 and 0235+164.

Successful detection of fringes with the Korean VLBI Network stations.

Enhanced baseline coverage extending the array's imaging capabilities.

Abstract

The Global mm-VLBI Array (GMVA) is the highest angular resolution imaging interferometer currently available as a common user facility. It is capable of angular resolutions on the order of 40 microarcseconds. Currently 14 stations in the United States and Europe participate in global 3 mm VLBI observations. The GMVA is used for continuum and spectroscopic imaging, probing the central regions of active galaxies and the origin of jets as these regions are typically not observable at longer wavelengths due to synchrotron self-absorption. In early 2012, fringes were detected to the three stations of the Korean VLBI Network (KVN), opening the possibility of extending the baseline coverage of the VLBI array to the East. In these proceedings, we will present recent images from a monitoring program of gamma-ray blazars using the GMVA, including the sources 3C454.3 and 0235+164, and an update of its current status and abilities.