1 citations · 2 across the 3 of their papers we have counts for
6 papers
Discovering the microJy Radio VLBI Sky via "Full-beam" Self-calibration
M. A. Garrett, J. M. Wrobel, R. Morganti
We demonstrate that at 1.4 GHz the combined response of sources detected serendipitously in deep, wide-field VLBI images is sufficient to permit self-calibration techniques to be e…
Active Galaxies at Milliarcsecond Resolution in the NOAO Deep Wide-Field Survey
J. M. Wrobel, T. A. Rector, G. B. Taylor +2
We are using the NRAO VLBA at 5.0 GHz to image about 200 FIRST sources stronger than 10 mJy at 1.4 GHz in the NDWFS.
21st Century VLBI: Deep Wide-Field Surveys
M. A. Garrett, J. M. Wrobel, R. Morganti
A 20-hour VLBI observation with the NRAO VLBA and GBT in the NOAO Bootes field reaches an rms noise of 9 microJy per beam at 1.4 GHz. Three sources were detected at 10-milliarcseco…
Subparsec-scale HI in the nucleus of NGC 4151
C. G. Mundell, J. M. Wrobel, A. Pedlar +1
We present sensitive, high-resolution 21-cm VLBA+VLA observations of the radio jet and nuclear HI absorption in NGC 4151. The 25-mas (1.6-pc) resolution continuum image reveals a h…
Parsec-Scale Jets and Tori in Seyfert Galaxies
A. L. Roy, J. M. Wrobel, A. S. Wilson +6
What causes the dichotomy between very powerful and very weak radio emission from AGNs? Perhaps the engines are the same but the jets get disrupted by dense ISM in radio-quiet obje…
Free-Free Absorption on Parsec Scales in Seyfert Galaxies
A. L. Roy, J. S. Ulvestad, A. S. Wilson +5
Seyfert galaxies come in two main types (types 1 and 2) and the difference is probably due to obscuration of the nucleus by a torus of dense molecular material. The inner edge of t…