activity
19952023
most citedA Warped Accretion Disk and Wide Angle Outflow in the Inner Parsec of the Circinus Galaxy

310 citations · 1k across the 16 of their papers we have counts for

collaborators

16 papers

astro-ph.GA2023

Radio continuum from the most massive early-type galaxies detected with ASKAP RACS

Michael J. I. Brown, Teagan A. Clarke, Andrew M. Hopkins +2

All very massive early-type galaxies contain supermassive blackholes but are these blackholes all sufficiently active to produce detectable radio continuum sources? We have used th…

astro-ph.GA2015★ 28 cited

A CO-rich merger shaping a powerful and hyper-luminous infrared radio galaxy at z=2: the Dragonfly Galaxy

B. H. C. Emonts, M. Y. Mao, A. Stroe +17

In the low-redshift Universe, the most powerful radio sources are often associated with gas-rich galaxy mergers or interactions. We here present evidence for an advanced, gas-rich…

astro-ph.CO2011★ 28 cited

CO observations of high-z radio galaxies MRC 2104-242 and MRC 0943-242: spectral-line performance of the Compact Array Broadband Backend

B. H. C. Emonts, R. P. Norris, I. Feain +10

We present the first 7-millimetre observations of two high-redshift, Lya-bright radio galaxies (MRC 2104-242 and MRC 0943-242) performed with the 2 x 2 GHz instantaneous bandwidth…

astro-ph.SR2010★ 28 cited

Observations of radio pulses from CU Virginis

V. Ravi, G. Hobbs, D. Wickramasinghe +7

The magnetic chemically peculiar star CU Virginis is a unique astrophysical laboratory for stellar magnetospheres and coherent emission processes. It is the only known main sequenc…

astro-ph.CO2010★ 25 cited

COLA III. Radio Detection of AGN in Compact Moderate Luminosity Infra-Red Galaxies

R. Parra, J. E. Conway, S. Aalto +4

We present results from 4.8 GHz VLA and Global-VLBI observations of the northern half of the moderate FIR luminosity (median L_IR = 10^11.01 L_Sol) COLA sample of star-forming gala…

astro-ph.CO2009★ 97 cited

Faraday Rotation Structure on Kiloparsec Scales in the Giant Radio Lobes of Centaurus A

Ilana Feain, Ronald Ekers, Tara Murphy +7

We present the results of an Australia Telescope Compact Array 1.4 GHz spectropolarimetric aperture synthesis survey of 34 square degrees centred on Centaurus A - NGC 5128. A catal…

astro-ph2003★ 310 cited

A Warped Accretion Disk and Wide Angle Outflow in the Inner Parsec of the Circinus Galaxy

L. J. Greenhill, R. S. Booth, S. P. Ellingsen +7

We present the first VLBI maps of H2O maser emission (lambda 1.3cm) in the nucleus of the Circinus Galaxy, constructed from data obtained with the Australia Telescope Long Baseline…

astro-ph2001★ 35 cited

Spectral, polarisation and time-lag properties of GRS 1915+105 radio oscillations

R. P. Fender, D. Rayner, S. A. Trushkin +4

We report high sensitivity dual-frequency observations of radio oscillations from GRS 1915+105 following the decay of a major flare event in 2000 July. The oscillations are clearly…

astro-ph2001★ 29 cited

First Results from the COLA Project- the Radio-FIR Correlation and Compact Radio Cores in Southern COLA Galaxies

E. A. Corbett, R. P. Norris, C. A. Heisler +5

We present the first results from the COLA (Compact Objects in Low-power AGN) project which aims to determine the relationship between one facet of AGN activity, the compact radio…

astro-ph2000★ 138 cited

Bipolar outflows in OH/IR stars

Albert A. Zijlstra, J. M. Chapman, P. te Lintel Hekkert +5

We investigate the development of bipolar outflows during the early post-AGB evolution. A sample of ten OH/IR stars is observed at high angular resolution, including bipolar nebula…

astro-ph2000★ 61 cited

Cold gas and star formation in a merging galaxy sequence

Antonis Georgakakis, Duncan A. Forbes, Ray P. Norris

We explore the evolution of the cold gas and star-formation activity during galaxy interactions, using a merging galaxy sequence comprising both pre- and post-mergers. Data for thi…

astro-ph1997★ 27 cited

Radio-Luminous Southern Seyfert Galaxies. I. Radio Images and Selected Optical/Near-Infrared Spectroscopy

M. A. Bransford, P. N. Appleton, C. A. Heisler +2

This is the first of two papers in which a study is made of a sample of 12 southern radio-luminous Seyfert galaxies. Our aim is to investigate possible correlations between radio m…

astro-ph1997★ 25 cited

A comprehensive search for extragalactic 6.7-GHz methanol masers

C. J. Phillips, R. P. Norris, S. P. Ellingsen +1

We have used the Australia Telescope Compact Array (ATCA) to search for 6.7-GHz methanol maser emission towards 87 galaxies. We chose the target sources using several criteria, inc…

astro-ph1996★ 61 cited

Extremely Rapid Variations of Water Maser Emission from the Circinus Galaxy

L. J. Greenhill, S. P. Ellingsen, R. P. Norris +4

The water maser lines in the nucleus of the Circinus galaxy vary on time scales as short as a few minutes, at least two orders of magnitude less than for other Galactic or extragal…

astro-ph1996★ 86 cited

A Survey of the Galactic Plane for 6.7-GHz Methanol Masers I: l = 325.0 - 335.0 ; b = -0.53 - 0.53

S. P. Ellingsen, M. L. von Bibra, P. M. McCulloch +3

We report the results of the first complete survey of an area of the Galactic Plane for maser emission from the 6.7-GHz transition of methanol. The survey covers a 10.6-square-degr…

astro-ph1995★ 61 cited

Continuum emission associated with 6.7-GHz methanol masers

S. P. Ellingsen, R. P. Norris, P. M. McCulloch

We have used the Australia Telescope Compact Array (ATCA) to search for continuum emission toward three strong 6.7-GHz methanol maser sources. For two of the sources, G339.88-1.26…