BOUFFET, Romuald; CHARLOT, P.; LAMBERT, S.

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

BOUFFET, Romuald
M2A 2013

CHARLOT, P.
M2A 2013

LAMBERT, S.

Langue

Communication dans un congrès

Ce document a été publié dans

2013, Espoo. 2013-08p. 185-188

Résumé en anglais

Astrometric positions of extragalactic radio sources derived from VLBI data are used to build highly-accurate reference frames such as the International Celestial Reference Frame. Despite their distant locations, instabilities in the position of these sources are often seen on time scales of months to years, which is generally thought to be caused by source structure evolution. In this paper, we compare position instabilities and structural evolution for a sample of 68 sources observed over a 10-year period (1994--2003). Our results indicate that the two phenomena are linked at some level although the correlation is not perfect.< Réduire

Origine

Importé de hal

Unités de recherche

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804