Comparison of ground-based and Gaia photometry of astrometric radio sources

TL;DR

This study compares Gaia and ground-based photometry of astrometric radio sources, revealing discrepancies that can aid in verifying object identification and detecting errors in optical magnitude data.

Contribution

It provides an analysis of photometric differences between Gaia and ground-based data, highlighting their potential for improving source verification and data reliability.

Findings

Magnitudes often do not agree well between Gaia and ground-based observations.

Discrepancies can be used to verify object cross-identification.

Analysis helps detect errors in optical magnitude data.

Abstract

A comparison was made between $Gaia$ magnitudes and magnitudes obtained from ground-based observations for astrometric radio sources . The comparison showed that these magnitudes often not agree well. There may be several reasons for this disagreement. Nevertheless, such an analysis can serve as an additional filter for verification of the object cross-identification. On the other hand, it can help to detect possible errors in optical magnitudes of astrometric radio sources coming from unreliable or inconsistent data sources.