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19992020
most citedLimits on the cosmological abundance of supermassive compact objects from a search for multiple imaging in compact radio sources

152 citations · 290 across the 10 of their papers we have counts for

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6 papers · 1 filter

astro-ph2006★ 35 cited

Flat-spectrum symmetric objects with ~1 kpc sizes I. The candidates

Pedro Augusto, J. Ignacio Gonzalez-Serrano, Ismael Perez-Fournon +1

In order to understand the origin and evolution of radio galaxies, searches for the youngest such sources have been conducted. Compact-medium symmetric objects (CSO-MSOs) are thoug…

astro-ph2005★ 16 cited

The radio properties of the cD galaxy of Abell 2390

Pedro Augusto, Alastair C. Edge, Claire J. Chandler

We present multi-frequency, multi-epoch radio imaging of the complex radio source B2151+174 in the core of the cluster, Abell 2390 (z~0.23). From new and literature data we conclud…

astro-ph2001★ 23 cited

Modelling The First Probable Two Plane Lens System B2114+022: Reproducing Two Compact Radio Cores A, D

K. -H. Chae, S. Mao, P. Augusto

We test possible lensing scenarios of the JVAS system B2114+022, in which two galaxies at different redshifts (``G1'' at and ``G2'' at ) are found with…

astro-ph2001★ 152 cited

Limits on the cosmological abundance of supermassive compact objects from a search for multiple imaging in compact radio sources

P. N. Wilkinson, D. R. Henstock, I. W. A. Browne +7

Using Very Long Baseline Interferometry we have searched a sample of 300 compact radio sources for examples of multiple imaging produced by gravitational lensing; no multiple image…

astro-ph2000★ 8 cited

An observational constraint on gravitational lensing by objects of mass 10^(9.5) - 10^(10.9) Mo

Pedro Augusto, Peter N. Wilkinson

A radio-based search for strong gravitational lensing, with image separations in the range 160-300 milliarcsec (mas), has yielded a null result for a sample of 1665 sources (August…

astro-ph1999★ 5 cited

The kpc-scale radio source population

Pedro Augusto, J. Ignacio Gonzalez-Serrano, Alastair C. Edge +3

We are conducting a multi-wavelength (radio, optical, and X-ray) observational campaign to classify, morphologically and physically, a sample of 55 flat-spectrum radio sources domi…