4 citations · 10 across the 17 of their papers we have counts for
8 papers · 1 filter
Compact Intraday Variable Radio Cores: New Observational Approaches
L. Fuhrmann, G. Cimò, T. P. Krichbaum +4
The evidence for refractive interstellar scintillation (RISS) being the main cause for rapid intraday variations (Intraday Variability, IDV) in Quasars and BL Lacs has recently bec…
Is 0716+714 a superluminal blazar?
U. Bach, T. P. Krichbaum, E. Ros +3
We present an analysis of new and old high frequency VLBI data collected during the last 10 years at 5--22 GHz. For the jet components in the mas-VLBI jet, two component identifica…
Proper motion in Cygnus A
U. Bach, T. P. Krichbaum, W. Alef +2
Our recent VLBI observations of the prominent FR II radio galaxy Cygnus A with the EVN and the VLBA reveal a pronounced two-sided jet structure. At 5 GHz, we now have 4 epochs from…
Higher Resolution VLBI Imaging with Fast Frequency Switching
E. Middelberg, A. L. Roy, R. C. Walker +2
Millimetre-VLBI is an important tool in AGN astrophysics, but it is limited by short atmospheric coherence times and poor receiver and antenna performance. We demonstrate a new kin…
Understanding Scintillation of Intraday Variables
T. Beckert, L. Fuhrmann, G. Cimo +3
Intraday Variability of compact extragalactic radio sources can be interpreted as quenched scintillation due to turbulent density fluctuations of the nearby ionized interstellar me…
Multi-frequency Study of Intraday Variable Sources
Giuseppe Cimò, L. Fuhrmann, T. P. Krichbaum +4
Intraday variability (IDV) of compact extragalactic radio sources is a complex phenomenon and shows a wavelength dependent mixture of refractive interstellar scintillation (RISS) (…