First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
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We present the first Event Horizon Telescope (EHT) images of M87, using observations from
April 2017 at 1.3 mm wavelength. These images show a prominent ring with a diameter of …

Abstract The Very Large Array Sky Survey (VLASS) is a synoptic, all-sky radio sky survey
with a unique combination of high angular resolution (≈ 2 farcs 5), sensitivity (a 1σ goal of …

The Murchison Widefield Array (MWA) is one of three Square Kilometre Array Precursor
telescopes and is located at the Murchison Radio-astronomy Observatory in the Murchison …

An image from the Karl G. Jansky Very Large Array of the Galaxy Hercules A (also known as
3C348) showing powerful synchrotron jets emerging from its core, the site of a supermassive …

Very-long-baseline interferometry (VLBI) is a challenging observational technique, which
requires in-depth knowledge about radio telescope instrumentation, interferometry, and the …

Software correlation, where a correlation algorithm written in a high-level language such as
C++ is run on commodity computer hardware, has become increasingly attractive for small …

The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a
telescope under development by a consortium of 17 countries. The SKA will be 50 times …

Messier 87 (M 87) is one of the nearest radio galaxies with a prominent jet extending from
sub-pc to kpc scales. Because of its proximity and the large mass of its central black hole …

We present the results of PSRπ, a large astrometric project targeting radio pulsars using the
Very Long Baseline Array (VLBA). From our astrometric database of 60 pulsars, we have …