414 citations · 682 across the 8 of their papers we have counts for
4 papers · 2 filters
First results from the ATCA 18 GHz pilot survey
R. Ricci, E. M. Sadler, R. D. Ekers +7
As a pilot study for the first all-sky radio survey at short wavelengths, we have observed 1216 sq. deg. of the southern sky at 18GHz (16mm) using a novel wide-band (3.4GHz bandwid…
Measuring transverse velocities in gravitationally lensed extragalactic systems using an annual parallax effect
Artem V. Tuntsov, Mark A. Walker, Geraint F. Lewis
A parallax method to determine transverse velocity in a gravitationally lensed system is described. Using the annual motion of the Earth around the Sun allows us to probe the local…
Interpretation of parabolic arcs in pulsar secondary spectra
Mark Walker, Don Melrose, Dan Stinebring +1
Pulsar dynamic spectra sometimes show organised interference patterns; these patterns have been shown to have power spectra which often take the form of parabolic arcs, or sequence…
Gamma-ray Spectra due to Cosmic-ray Interactions with Dense Gas Clouds
Michiko Ohishi, Masaki Mori, Mark Walker
Gamma-ray spectra from cosmic-ray proton and electron interactions with dense gas clouds have been calculated using a Monte Carlo event simulation code, GEANT4. Such clouds are pos…