851 citations · 994 across the 14 of their papers we have counts for
4 papers · 2 filters
VLBI observations of weak sources using fast frequency switching
E. Middelberg, A. L Roy, R. C. Walker +1
We have developed a new phase referencing technique for high frequency VLBI observations. In conventional phase referencing, one interleaves short scans on a nearby phase calibrato…
A Multiband Approach to AGN: Radioscopy & Radio Astronomy
M. Kadler, E. Ros, J. Kerp +3
Only in the radio-loud population of active galactic nuclei (AGN) does the production, collimation, and acceleration of powerful relativistic jets take place. We introduce here a c…
Radio Recombination Lines from Starbursts: NGC 3256, NGC 4945 and the Circinus Galaxy
A. L. Roy, W. M. Goss, Niruj R. Mohan +2
A renewed attempt to detect radio recombination lines from external galaxies has resulted in the measurement of lines from several bright starburst galaxies. The lines are produced…
VLBI detections of a source weaker than 100 mJy at 86 GHz
E. Middelberg, A. L. Roy, R. C. Walker +1
We use a new phase-calibration strategy to calibrate the phase of 86 GHz VLBI observations of the FR I radio galaxy NGC 4261. Instead of switching between a calibrator source and t…