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A novel search for gravitationally lensed radio sources in wide-field VLBI imaging from the mJIVE-20 survey
C. Spingola, J. P. McKean, M. Lee +2
We present a novel pilot search for gravitational lenses in the mJIVE-20 survey, which observed radio sources selected from FIRST with the VLBA at an angular resolution o…
Micro-arcsecond structure of Sagittarius A* revealed by high-sensitivity 86 GHz VLBI observations
Christiaan D. Brinkerink, Cornelia Müller, Heino D. Falcke +21
The compact radio source Sagittarius~A (Sgr~A)in the Galactic Center is the primary supermassive black hole candidate. General relativistic magnetohydrodynamical (GRMHD) si…
Nowhere to Hide: Radio-faint AGN in the GOODS-N field. I. Initial catalogue and radio properties
J. F. Radcliffe, M. A. Garrett, T. W. B. Muxlow +6
(Abridged) Conventional radio surveys of deep fields ordinarily have arc-second scale resolutions often insufficient to reliably separate radio emission in distant galaxies origina…
Detection of a glitch in the pulsar J1709-4429
Marcus E. Lower, Chris Flynn, Matthew Bailes +24
We report the detection of a glitch event in the pulsar J17094429 (also known as B170644) during regular monitoring observations with the Molonglo Observatory Synthesis Teles…
Stars of Empty Simplices
Matthias Reitzner, Daniel Temesvari
Let be an -element point set in general position. For a -element subset let the degree ${\rm…
Testing the universality of free fall by tracking a pulsar in a stellar triple system
Anne M. Archibald, Nina V. Gusinskaia, Jason W. T. Hessels +6
Einstein's theory of gravity, general relativity, has passed stringent tests in laboratories, elsewhere in the Solar Sytem, and in pulsar binaries. Nevertheless it is known to be i…