Publications (13)
CO(1-0) & CO(5-4) observations of the most distant known radio galaxy at z=5.2
Ilana Klamer, Ron Ekers, Elaine Sadler +3
Using the Australia Telescope Compact Array we have detected CO(1-0) and CO(5-4) from TNJ0924-2201 at z=5.2, the most distant radio galaxy known to date. This is the second highest…
The galaxy population of the complex cluster system Abell 3921
Florian Pranger, Asmus Böhm, Chiara Ferrari +6
We present a spectrophotometric analysis of the galaxy pop. in the area of the merging cluster Abell 3921 at redshift 0.093. We investigate the impact of the complex cluster enviro…
Low and High Angular Momentum Accretion Flows in BHCs: Case Study of XTE J1550-564
Roberto Soria, Kinwah Wu, Diana Hannikainen +2
The 1998 outburst of XTE J1550-564 started with a hard X-ray spike, rising in less than a day and declining after 3-4 days; at the same time, the soft X-ray flux was rising with a…
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,…
Formation of optical lines in black-hole binaries
Kinwah Wu, Roberto Soria, Helen Johnston +1
The HI Balmer emission lines of black-hole binaries show double-peaked profiles during the high-soft state and the quiescent state. In the high-soft state the profiles are asymmetr…
Serendipitous discovery of a dying Giant Radio Galaxy associated with NGC 1534, using the Murchison Widefield Array
Natasha Hurley-Walker, Melanie Johnston-Hollitt, Ron Ekers +41
Recent observations with the Murchison Widefield Array at 185~MHz have serendipitously unveiled a heretofore unknown giant and relatively nearby () radio galaxy associa…
Galactic interaction as the trigger for the young radio galaxy MRC B1221-423
Craig Anderson, Helen Johnston, Richard Hunstead
Mergers between a massive galaxy and a small gas-rich companion (minor mergers) have been proposed as a viable mechanism for triggering radio emission in an active galaxy. Until no…
Quenching of the radio jet during the X-ray high state of GX 339-4
Robert Fender, Stephane Corbel, Tasso Tzioumis +8
We have observed the black hole candidate X-ray binary GX 339-4 at radio wavelengths before, during and after the 1998 high/soft X-ray state transition. We find that the radio emis…
How accurate are SuperCOSMOS positions?
Adam Schaefer, Richard Hunstead, Helen Johnston
Optical positions from the SuperCOSMOS Sky Survey have been compared in detail with accurate radio positions that define the second realisation of the International Celestial Refer…
Optical Spectroscopy of GRO J1655-40
Roberto Soria, Kinwah Wu, Richard Hunstead
We have obtained optical spectra of the soft X-ray transient GRO J1655-40 during different X-ray spectral states (quiescence, high-soft and hard outburst) between 1994 Aug and 1997…
A search for distant radio galaxies from SUMSS and NVSS: II. Optical Spectroscopy
Carlos De Breuck, Ilana Klamer, Helen Johnston +4
This is the second in a series of papers presenting observations and results for a sample of 76 ultra-steep-spectrum (USS) radio sources in the southern hemisphere designed to find…
A 22-year Southern Sky Survey for Transient and Variable Radio Sources using the Molonglo Observatory Synthesis Telescope
Keith Bannister, Tara Murphy, Bryan M. Gaensler +2
We describe a 22-year survey for variable and transient radio sources, performed with archival images taken with the Molonglo Observatory Synthesis Telescope (MOST). This survey co…
The UTMOST pulsar timing programme II: Timing noise across the pulsar population
Marcus E. Lower, Matthew Bailes, Ryan M. Shannon +15
While pulsars possess exceptional rotational stability, large scale timing studies have revealed at least two distinct types of irregularities in their rotation: red timing noise a…