activity
20002014
most citedFour Extreme Relic Radio Sources in Clusters of Galaxies

186 citations · 547 across the 14 of their papers we have counts for

collaborators

13 papers

astro-ph.IM2014★ 9 cited

Future mmVLBI Research with ALMA: A European vision

R. P. J. Tilanus, T. P. Krichbaum, J. A. Zensus +165

Very long baseline interferometry at millimetre/submillimetre wavelengths (mmVLBI) offers the highest achievable spatial resolution at any wavelength in astronomy. The anticipated…

astro-ph.HE2013★ 1 cited

Zooming towards the Event Horizon - mm-VLBI today and tomorrow

T. P. Krichbaum, A. Roy, J. Wagner +21

Global VLBI imaging at millimeter and sub-millimeter wavelength overcomes the opacity barrier of synchrotron self-absorption in AGN and opens the direct view into sub-pc scale regi…

astro-ph.CO2012

Long term Arecibo monitoring of the water megamaser in MG J0414+0534

P. Castangia, M. C. V. Impellizzeri, J. P. McKean +4

We monitored the 22 GHz maser line in the lensed quasar MG J0414+0534 at z=2.64 with the 300-m Arecibo telescope for almost two years to detect possible additional maser components…

astro-ph.CO2011★ 11 cited

Water vapour at high redshift: Arecibo monitoring of the megamaser in MG J0414+0534

P. Castangia, C. M. V. Impellizzeri, J. P. McKean +6

The study of water masers at cosmological distances would allow us to investigate the parsec-scale environment around powerful radio sources, to probe the physical conditions of th…

astro-ph.IM2011★ 5 cited

Conversion from linear to circular polarization in FPGA

Koyel Das, A. L. Roy, R. Keller +1

Context: Radio astronomical receivers are now expanding their frequency range to cover large (octave) fractional bandwidths for sensitivity and spectral flexibility, which makes th…

astro-ph.CO2010★ 16 cited

A search for gravitationally lensed water masers in dusty quasars and star-forming galaxies

J. P. McKean, C. M. V. Impellizzeri, A. L. Roy +5

Luminous extragalactic water masers are known to be associated with AGN and have provided accurate estimates for the mass of the central supermassive black hole and the size and st…