4 citations · 10 across the 17 of their papers we have counts for
6 papers · 1 filter
Quasi-Periodic Changes in the Parsec-Scale Jet of 3C345
J. Klare, J. A. Zensus, A. P. Lobanov +3
We have observed the QSO 3C345 with VSOP at 1.6GHz and 5GHz and with the VLBA at 22GHz and 43GHz, with 24 epochs in total, from 1997.40 to 1999.69. This study, combined with previo…
Kinematic Study of the Blazar 0716+714
U. Bach, T. P. Krichbaum, S. Britzen +3
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 th…
Multi-frequency & Multi-epoch VLBI study of Cygnus A
U. Bach, M. Kadler, T. P. Krichbaum +4
We present the first multi-frequency phase-referenced observations of Cygnus A done with the VLBA at 15 and 22 GHz. We find a pronounced two-sided jet structure, with a steep spect…
Approaching NGC3079 with VLBI
E. Middelberg, T. P. Krichbaum, A. L. Roy +2
The Seyfert 2 galaxy NGC3079 is one of the nearest radio-weak AGN. We have carried out multi-frequency, multi-epoch VLBI observations of this object and detected new components, pr…
Millimeter-VLBI with a Large Millimeter-Array: Future Possibilities
Thomas P. Krichbaum
We discuss possibilities and improvements which could be obtained, if a phased array with a large number (N=50-100) of sub-millimeter antennas - like the planned large southern arr…
Millimeter VLBI and Variability in AGN Jets
T. P. Krichbaum, D. A. Graham, A. Witzel +4
Millimeter-VLBI images probe as deep as never before the nuclei of AGN. Global 3mm-VLBI where the VLBA is combined with sensitive European stations, gives CLEAN maps of a quality,…