2003/09/15 by U. Bach, T. P. Krichbaum, Bach, U. +9
Engineering · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Particle physics theoretical and experimental studies #Superconducting Materials and Applications #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0309404
To be published in "Future Directions in High Resolution Astronomy" (Celebration of the 10th Anniversary of the Very Long Baseline Array), ASP Conference Series. 3 pages, 2 figures
arxiv created 2003/09/15 · arxiv updated 2009/12/01
We determined the kinematics at the jet of 0716+714 from a reanalysis of multi-frequency VLBI data (5, 8.4, 15, 22 GHz) obtained during the last 10 years combined with data from the literature. For this intra-day variable blazar, only a lower limit of its distance is known (z >= 0.3). We find that 0716+714 is a relatively fast superluminal source (with a Lorentz factor of gamma >15), revising earlier results showing much slower motions. We discuss the new findings with emphasis on the interpretation of the observed rapid radio variability.