60 citations · 190 across the 12 of their papers we have counts for
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Is an obscured AGN at the centre of the disk galaxy IC 2497 responsible for Hanny's Voorwerp?
H. Rampadarath, M. A. Garrett, T. Muxlow +3
We present the results of VLBI and MERLIN observations of the massive disk galaxy IC 2497. Optical observations of IC 2497 revealed the existence of a giant emission nebula "Hanny'…
Black Holes in Active Galactic Nuclei
M. J. Valtonen, S. Mikkola, D. Merritt +7
Supermassive black holes are common in centers of galaxies. Among the active galaxies, quasars are the most extreme, and their black hole masses range as high as to $6\cdot 10^{10}…
Revealing Hanny's Voorwerp: radio observations of IC 2497
G. I. G. Jozsa, M. A. Garrett, T. A. Oosterloo +7
We present multi-wavelength radio observations in the direction of the spiral galaxy IC 2497 and the neighbouring emission nebula known as "Hanny's Voorwerp". Our WSRT continuum ob…
Observations of 44 extragalactic radio sources with the VLBA at 92cm: A List of Potential Calibrators and Targets for LOFAR and RadioAstron
H. Rampadarath, M. A. Garrett, A. Polatidis
Aims. We have analysed VLBA 92cm archive data of 44 extragalactic sources in order to identify early targets and potential calibrator sources for the LOFAR radio telescope and the…
Lofar, E-Lofar and Low-Frequency Vlbi
M. A. Garrett, H. Rampadarath, E. Lenc +1
The Low Frequency Array (LOFAR) is a new generation of electronic radio telescope based on aperture array technology. The telescope is being developed by ASTRON, and currently bein…