217 citations · 1.7k across the 72 of their papers we have counts for
8 papers · 1 filter
Towards millimeter VLBI
T. P. Krichbaum, U. Bach, D. A. Graham +6
We discuss the present performance and the future perspectives of VLBI in the 3 mm to 0.85 mm observing bands (so called mm-VLBI). The availability of new telescopes and the recent…
High-frequency VLBI observations of SgrA* during a multi-frequency campaign in May 2007
R. -S. Lu, T. P. Krichbaum, A. Eckart +5
In May 2007 the compact radio source Sgr A* was observed in a global multi-frequency monitoring campaign, from radio to X-ray bands. Here we present and discuss first and prelimina…
Testing the inverse-Compton catastrophe scenario in the intra-day variable blazar S5 0716+71, III. Rapid and correlated flux density variability from radio to sub-mm bands
L. Fuhrmann, T. P. Krichbaum, A. Witzel +22
The BL Lac object S5 0716+71 was observed in a global multi-frequency campaign to search for rapid and correlated flux density variability and signatures of an inverse-Compton (IC)…
Modeling nuclei of radio galaxies from VLBI radio observations. Application to the BL Lac Object S5 1803+784
J. Roland, S. Britzen, N. A. Kudryavtseva +2
We present a new method to fit the variations of both coordinates of a VLBI component as a function of time, assuming that the nucleus of the radio source contains a binary black h…
Observations of IntraDay Variable sources with the Effelsberg and Urumqi Radio Telescopes
N. Marchili, T. P. Krichbaum, X. Liu +7
A sample of classical IntraDay Variable (IDV) and IDV candidate sources has been monitored with the Urumqi 25m telescope and the Effelsberg 100m telescope. Aim of the project is to…
A Global 86GHz VLBI Survey of Compact Radio Sources
Sang-Sung Lee, Andrei P. Lobanov, Thomas P. Krichbaum +5
We present results from a large 86GHz global VLBI survey of compact radio sources. The main goal of the survey is to increase by factors of 3--5 the total number of objects accessi…