Effects of AGN jet evolution on VLBI astrometric positions
Language
en
Communication dans un congrès
This item was published in
IVS 2014 General Meeting Proceedings, IVS 2014 General Meeting Proceedings, International VLBI Service for Geodesy and Astrometry (IVS) 2014 General Meeting Proceedings, 2014, Beijing. 2014p. 417
English Abstract
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 ...Read more >
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 their source structure evolution. In this paper, we compare position instabilities and structural evolution for a sample of 68 sorces observed over a ten-year period (1994-2003). Our results indicate that the two phenomena are linked at some level although the correlation is not perfect.Read less <
Origin
Hal imported