Publications (20)
Swift J1727.8-1613 has the Largest Resolved Continuous Jet Ever Seen in an X-ray Binary
Callan M. Wood, James C. A. Miller-Jones, Arash Bahramian +21
Multi-wavelength polarimetry and radio observations of Swift J1727.8-1613 at the beginning of its recent 2023 outburst suggested the presence of a bright compact jet aligned in the…
Warkworth 12-m VLBI Station: WARK12M - 2012
Stuart Weston, Hiroshi Takiguchi, Tim Natusch +1
The Warkworth 12-m Radio Telescope is operated by the Institute for Radio Astronomy and Space Research (IRASR) at AUT University, Auckland, New Zealand. This report briefly reviews…
VLBI astrometry on the white dwarf pulsar AR Scorpii
Pengfei Jiang, Lang Cui, Jun Yang +12
AR Scorpii (AR Sco), the only-known radio-pulsing white dwarf binary, shows unusual pulsating emission at the radio, infrared, optical and ultraviolet bands. To determine its astro…
Radio Astronomy and eVLBI using KAREN
Stuart Weston, Tim Natusch, Sergei Gulyaev
Kiwi Advanced Research and Education Network (KAREN) has been used to transfer large volumes of radio astronomical data between the AUT Radio Astronomical Observatory at Warkworth,…
First scientific VLBI observations using New Zealand 30 metre radio telescope WARK30M
Leonid Petrov, Tim Natusch, Stuart Weston +3
We report the results of a successful 24 hour 6.7 GHz VLBI experiment using the 30 meter radio telescope WARK30M near Warkworth, New Zealand, recently converted from a radio teleco…
TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry. III. First-epoch S band images
Petra Benke, Florian Rösch, Eduardo Ros +10
With the emergence of very high energy astronomy (VHE; E>100 GeV), new open questions were presented to astronomers studying the multi-wavelength emission from blazars. Answers to…
Spica and the annual cycle of PKS B1322-110 scintillations
Hayley Bignall, Cormac Reynolds, Jamie Stevens +9
PKS B1322-110 is a radio quasar that is located only 8.5' in angular separation from the bright B star Spica. It exhibits intra-day variability in its flux density at GHz frequenci…
New Zealand involvement in Radio Astronomical VLBI Image Processing
Stuart Weston, Tim Natusch, Sergei Gulyaev
With the establishment of the AUT University 12m radio telescope at Warkworth, New Zealand has now become a part of the international Very Long Baseline Interferometry (VLBI) commu…
Planetary Radio Interferometry and Doppler Experiment (PRIDE) technique: A test case of the Mars Express Phobos fly-by
Dmitry A. Duev, Sergei V. Pogrebenko, Giuseppe Cimò +33
The closest ever fly-by of the Martian moon Phobos, performed by the European Space Agency's Mars Express spacecraft, gives a unique opportunity to sharpen and test the Planetary R…
New Zealand pathway towards Asia-Pacific and global e-VLBI research and development
Sergei Gulyaev, Tim Natusch, Stuart Weston +1
Over the past 3 years, Auckland University of Technology has established the first radio astronomical observatory in New Zealand, which, because of its remote geographic location,…
Conversion of New Zealand's 30m Telecommunication Antenna into a Radio Telescope
Lewis Woodburn, Tim Natusch, Stuart Weston +3
We describe our approach to the conversion of a former 100-foot (30-m) telecommunication antenna in New Zealand into a radio telescope. We provide the specifications of the Earth S…
Warkworth 12-m VLBI Station: WARK12M
Sergei Gulyaev, Tim Natusch, Stuart Weston +2
This report summarizes the geodetic VLBI activities in New Zealand in 2010. It provides geographical and technical details of WARK12M - the new IVS network station operated by the…
Observations of radio sources near the Sun
Oleg Titov, Sebastien Lambert, Benedikt Soja +15
Geodetic Very Long Baseline Interferometry (VLBI) data are capable of measuring the light deflection caused by the gravitational field of the Sun and large planets with high accura…
The MWA GLEAM 4-Jy (G4Jy) Sample
Sarah V. White, Thomas M. O. Franzen, O. Ivy Wong +15
Powerful radio-galaxies feature heavily in our understanding of galaxy evolution. However, when it comes to studying their properties as a function of redshift and/or environment,…
The GLEAM 4-Jy (G4Jy) Sample: I. Definition and the catalogue
Sarah V. White, Thomas M. O. Franzen, Chris J. Riseley +21
The Murchison Widefield Array (MWA) has observed the entire southern sky (Declination, 30 deg) at low radio-frequencies, over the range 72-231 MHz. These observations constit…
The GLEAM 4-Jy (G4Jy) Sample: II. Host-galaxy identification for individual sources
Sarah V. White, Thomas M. O. Franzen, Chris J. Riseley +20
The entire southern sky (Declination, 30 deg) has been observed using the Murchison Widefield Array (MWA), which provides radio imaging of 2-arcmin resolution at low fr…
Warkworth 12m VLBI Station: WARK12M - 2014
Stuart Weston, Tim Natusch, Lewis Woodburn +2
The Warkworth Radio Astronomical Observatory is operated by the Institute for Radio Astronomy and Space Research (IRASR), AUT University, Auckland, New Zealand. Here we review the…
The TANAMI Multiwavelength Program: Dynamic SEDs of Southern Blazars
Felicia KrauÃ, Joern Wilms, Matthias Kadler +32
Simultaneous broadband spectral and temporal studies of blazars are an important tool for investigating active galactic nuclei (AGN) jet physics. We study the spectral evolution be…
Unprecedented change in the position of four radio sources
Oleg Titov, Sándor Frey, Sébastien Lambert +7
Astrometric positions of radio-emitting active galactic nuclei (AGNs) can be determined with sub-milliarcsec accuracy using very long baseline interferometry (VLBI). The usually sm…
Radio Astronomy Data Transfer and eVLBI using KAREN
Stuart Weston, Timothy Natusch, Sergei Gulyaev
Kiwi Advanced Research and Education Network (KAREN) has been used to transfer large volumes of radio astronomical data between the Radio Astronomical Observatory at Warkworth, New…