Exploring Source Structure with the Bordeaux VLBI Image Database Comparing Jet Directions with Optical-Radio Offset Vectors - Observatoire de Paris Accéder directement au contenu
Communication Dans Un Congrès Année : 2022

Exploring Source Structure with the Bordeaux VLBI Image Database Comparing Jet Directions with Optical-Radio Offset Vectors

Résumé

The Bordeaux VLBI Image Database provides to the international VLBI community almost 8,000 VLBI images of radio sources at S and X band and some others at K and Q band. Such images are of interest for astrometric and astrophysical applications, such as the determination of the VLBI jet direction. We developed a fully automatic method to extract this direction from any VLBI image, which we then applied to all BVID images, resulting in the production of 9,215 jet directions for 1,221 sources. Comparing the mean jet directions over all epochs at X band to the Gaia EDR3 (optical) − ICRF3 S/X (radio) offset vector directions indicates that the offset vector is aligned within 30 • of the jet direction in roughly half of the sources, thereby confirming previous studies.
Fichier principal
Vignette du fichier
45_collioud_etal.pdf (1.11 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

obspm-03964399 , version 1 (07-02-2023)

Identifiants

  • HAL Id : obspm-03964399 , version 1

Citer

Arnaud Collioud, P. Charlot, Sébastien Lambert. Exploring Source Structure with the Bordeaux VLBI Image Database Comparing Jet Directions with Optical-Radio Offset Vectors. 12th General Meeting of the International VLBI Service for Geodesy and Astrometry (IVS), Mar 2022, On line, France. ⟨obspm-03964399⟩
14 Consultations
13 Téléchargements

Partager

Gmail Mastodon Facebook X LinkedIn More