70 citations · 128 across the 17 of their papers we have counts for
17 papers
AGN Feeding & Feedback Over the Galactic Scales
Filippo M. Maccagni, Vincenzo Mainieri, Isabella Prandoni +8
Active Galactic Nuclei (AGN) are key drivers of galaxy evolution, triggered by cold gas accreting onto a super-massive black hole. However, the processes regulating this gas accret…
CosmoDRAGoN III: Shaping the Afterlife -- How Progenitors and Environments Sculpt Radio Galaxy Remnants
Georgia S. C. Stewart, Stanislav S. Shabala, Patrick M. Yates-Jones +6
Identifying remnant radio-loud active galactic nuclei (AGNs) is challenging due to their diverse morphological and spectral characteristics. Using three-dimensional hydrodynamic si…
The ASKAP-FLASH survey: A first look at the multiwavelength properties and redshift distribution of compact radio sources
W. Roster, E. M. Sadler, E. K. Mahony +15
We present the characterisation, including a photometric redshift (photo-) analysis, of the optical counterparts (CTPs) to over 45 000 bright ( 30 mJy) comp…
ASKAP EMU detection of an Odd Radio Circle (ORC) candidate: J094412-751016 (Anglerfish)
M. D. Filipović, Z. J. Smeaton, A. C. Bradley +33
We report diffuse extended radio-continuum emission spatially coinciding with the IR source WISEA J094409.17-751012.8, and a semi-variable star, V687 Carinae. We use 944 MHz radio…
EMU/GAMA: A statistical perspective on active galactic nuclei diagnostics
J. Prathap, A. M. Hopkins, R. Carvajal +19
While it is well known that galaxies are composites of many emission processes, quantifying the various contributions remains challenging. In this work, we use unsupervised machine…
ASKAP discovery of a 30 kpc bipolar outflow from the edge-on disk of the nearby spiral galaxy ESO 130-G012
Baerbel S. Koribalski, Roland M. Crocker, Ildar Khabibullin +6
We present the discovery of a large-scale, limb-brightened outflow, extending at least 30 kpc above and below the star-forming disk of the edge-on galaxy ESO 130-G012 (D = 16.9 Mpc…
CosmoDRAGoN II: Remnant Radio Galaxies in Group and Cluster Environments
Georgia S. C. Stewart, Stanislav S. Shabala, Ross J. Turner +5
Radio galaxy remnants are a rare subset of the radio-loud active galactic nuclei (RLAGN) population, representing the quiescent phase in the RLAGN lifecycle. Despite their observed…
The origin of the spectral versus dynamical age discrepancy in radio galaxies
Larissa Jerrim, Stas Shabala, Ross Turner +4
We investigate the effect of turbulent magnetic fields on the observed spectral properties of synchrotron radio emission in large-scale radio galaxy lobes. We use three-dimensional…
EMU and the DRAGNs I: A Catalogue of DRAGNs
Ray P. Norris, Miranda Yew, Evan Crawford +10
We present a catalogue of 3557 Double Radio sources associated with Active Galactic Nuclei (DRAGNs) from the First Pilot Survey of the Evolutionary Map of the Universe (EMU), obser…
Jet outbursts, non-thermal pressure and the AGN jet duty cycle
Andrew Sullivan, Ross J. Turner, Stanislav S. Shabala +2
We predict the non-thermal pressure (NTP) induced in the cores of galaxy clusters by kinetic jet feedback from an active galactic nucleus (AGN). We model a population of Fanaroff-R…
BRAiSE: synthetic polarisation in RMHD AGN jet simulations
Larissa Jerrim, Stas Shabala, Patrick Yates-Jones +4
We present a new method to calculate the polarised synchrotron emission of radio AGN sources using magnetic field information from 3-dimensional relativistic magnetohydrodynamical…
The GLEAMing of the first supermassive black holes: III. Radio sources with ultra-faint host galaxies
J. W. Broderick, N. Seymour, G. Drouart +10
We present deep near-infrared -band imaging for 35 of the 53 sources from the high-redshift () radio galaxy candidate sample defined in Broderick et al. (2022). T…
Predicting the Non-Thermal Pressure in Galaxy Clusters
Andrew Sullivan, Stanislav Shabala, Chris Power +2
We investigate the relationship between a galaxy cluster's hydrostatic equilibrium state, the entropy profile, , of the intracluster gas, and the system's non-thermal pressure (…
Predicting the Scaling Relations between the Dark Matter Halo Mass and Observables from Generalised Profiles II: Intracluster Gas Emission
Andrew Sullivan, Chris Power, Connor Bottrell +2
We investigate the connection between a cluster's structural configuration and observable measures of its gas emission that can be obtained in X-ray and Sunyaev-Zeldovich (SZ) surv…
A unique, ring-like radio source with quadrilateral structure detected with machine learning
Michelle Lochner, Lawrence Rudnick, Ian Heywood +2
We report the discovery of a unique object in the MeerKAT Galaxy Cluster Legacy Survey (MGCLS) using the machine learning anomaly detection framework Astronomaly. This strange, rin…
Mutual distance dependence drives the observed jet power - radio luminosity scaling relations in radio galaxies
L. E. H. Godfrey, S. S. Shabala
The kinetic power of radio jets is a quantity of fundamental importance to studies of the AGN feedback process and radio galaxy physics. A widely used proxy for jet power is the ex…
Investigating the properties of AGN feedback in hot atmospheres triggered by cooling-induced gravitational collapse
Edward C. D. Pope, J. Trevor Mendel, Stanislav S. Shabala
Radiative cooling may plausibly cause hot gas in the centre of a massive galaxy, or galaxy cluster, to become gravitationally unstable. The subsequent collapse of this gas on a dyn…