# Open our eyes to wider fields in VLBI surveys

## TL;DR

This paper presents an automated VLBI survey imaging over 1000 radio sources, revealing diverse and previously unknown extended radio structures within a 1.5-arcsec radius, enabling large-scale statistical and discovery potential.

## Contribution

It introduces an automated imaging process for wide-field VLBI surveys, expanding the field of view and uncovering new radio source phenomena.

## Key findings

- Detected a variety of extended radio structures
- Discovered previously unknown radio source features
- Imaged over 1000 sources within a 1.5-arcsec radius

## Abstract

The observation and imaging of hundreds or thousands of radio sources with the technique of very long baseline interferometry (VLBI) is a computationally intensive task. However, these surveys allow us to conduct statistical investigations of large source samples, and also to discover new phenomena or types of objects. The field of view of these high-resolution VLBI imaging observations is typically a few arcseconds at cm wavelengths. For practical reasons, often a much smaller fraction of the field, the central region is imaged only. With an automated process we imaged the ~1.5-arcsec radius fields around more than 1000 radio sources, and found a variety of extended radio structures. Some of them are yet unknown in the literature.