Publications (23)
Disturbed Fossil Group Galaxy NGC 1132
Dong-Woo Kim, Craig Anderson, Doug Burke +10
We have analyzed the Chandra archival data of NGC 1132, a well-known fossil group, i.e. a system expected to be old and relaxed long after the giant elliptical galaxy assembly. Ins…
Detecting Faltering Growth in Children via Minimum Random Slopes
Jarod Y. L. Lee, Craig Anderson, Wai T. Hung +2
A child is considered to have faltered growth when increases in their height or weight starts to decline relative to a suitable comparison population. However, there is currently a…
Unexpected Circular Radio Objects at High Galactic Latitude
Ray P. Norris, Huib T. Intema, Anna D. Kapinska +26
We have found a class of circular radio objects in the Evolutionary Map of the Universe Pilot Survey, using the Australian Square Kilometre Array Pathfinder telescope. The objects…
An HI absorption distance to the black hole candidate X-ray binary MAXI J1535-571
Jaiverdhan Chauhan, James C. A. Miller-Jones, Gemma E. Anderson +10
With the Australian Square Kilometre Array Pathfinder (ASKAP) we monitored the black hole candidate X-ray binary MAXI J1535--571 over seven epochs from 21 September to 2 October 20…
The detection of an extremely bright fast radio burst in a phased array feed survey
Keith Bannister, Ryan Shannon, Jean-Pierre Macquart +53
We report the detection of an ultra-bright fast radio burst (FRB) from a modest, 3.4-day pilot survey with the Australian Square Kilometre Array Pathfinder. The survey was conducte…
The Impact of Dense RM Grids on the Study of Intra-cluster and Intra-group Magnetic Fields
Francesca Loi, Valentina Vacca, Shane P. O'Sullivan +8
The presence of diffuse radio sources in galaxy clusters and the recent discovery of polarized signals associated with the tails of a jellyfish galaxy indicates that intra-cluster/…
ASKAP Detection of Periodic and Elliptically Polarized Radio Pulses from UV Ceti
Andrew Zic, Adam Stewart, Emil Lenc +9
Active M-dwarfs are known to produce bursty radio emission, and multi-wavelength studies have shown that Solar-like magnetic activity occurs in these stars. However, coherent burst…
Chandra Early-Type Galaxy Atlas
Dong-Woo Kim, Craig Anderson, Douglas Burke +11
The hot ISM in early type galaxies (ETGs) plays a crucial role in understanding their formation and evolution. The structural features of the hot gas identified by Chandra observat…
An XMM-Newton Early-type Galaxy Atlas
Nazma Islam, Dong-Woo Kim, Kenneth Lin +9
The distribution of hot interstellar medium in early-type galaxies bears the imprint of the various astrophysical processes it underwent during its evolution. The X-ray observation…
Constraining the Physical State of the Hot Gas Halos in NGC 4649 and NGC 5846
Alessandro Paggi, Dong-Woo Kim, Craig Anderson +15
We present results of a joint \textit{Chandra}/\textit{XMM-Newton} analysis of the early-type galaxies NGC 4649 and NGC 5846 aimed at investigating differences between mass profile…
The Salamander: A case study of the magnetic field and peculiar morphology of G309.8-2.6 through radio polarimetry
Wenhui Jing, Jennifer L. West, Xiaohui Sun +17
Studying the interaction between core-collapse supernova remnants (SNRs) and their surrounding environments is essential to understanding the mechanism for energy transfer to the i…
Revealing the magnetization of the intracluster medium of Abell 3581 using background Faraday rotation measures from the POSSUM survey
Affan Khadir, Erik Osinga, Wonki Lee +16
The line-of-sight magnetic field of galaxy clusters can be probed using Faraday rotation measure (RM) data. However, our understanding of cluster magnetism is limited due to the sc…
Evolutionary Map of the Universe (EMU): Observations of Filamentary Structures in the Abell S1136 Galaxy Cluster
Peter. J. Macgregor, Ray P. Norris, Andrew O'Brien +17
We present radio observations of the galaxy cluster Abell S1136 at 888 MHz, using the Australian Square Kilometre Array Pathfinder radio telescope, as part of the Evolutionary Map…
Identifying Clusters in Bayesian Disease Mapping
Craig Anderson, Duncan Lee, Nema Dean
Disease mapping is the field of spatial epidemiology interested in estimating the spatial pattern in disease risk across areal units. One aim is to identify units exhibiting el…
Pseudo-3D visualization of Faraday structure in polarized radio sources: methods, science use cases, and development priorities
Lawrence Rudnick, Craig Anderson, William D. Cotton +3
We introduce the construction of polarized intensity cubes (RA, Dec, ) and their visualization as movies, as a powerful technique for interpreting Faraday structure. is…
A circular polarisation survey for radio stars with the Australian SKA Pathfinder
Joshua Pritchard, Tara Murphy, Andrew Zic +14
We present results from a circular polarisation survey for radio stars in the Rapid ASKAP Continuum Survey (RACS). RACS is a survey of the entire sky south of being…
A depolarizing HI tidal tail in the western lobe of Fornax A
Francesca Loi, Paolo Serra, Matteo Murgia +8
Recent MeerKAT neutral hydrogen (HI) observations of Fornax A reveal tidal material intersecting in projection the western lobe of this radio galaxy. We found a spatial coincidence…
Serendipitous Discovery of PSR J1431-6328 as a Highly-Polarized Point Source with the Australian SKA Pathfinder
David Kaplan, Shi Dai, Emil Lenc +10
We identified a highly-polarized, steep-spectrum radio source in a deep image with the Australian Square Kilometre Array Pathfinder (ASKAP) telescope at 888 MHz. After considering…
Reading M87's DNA: A Double Helix revealing a large scale Helical Magnetic Field
Alice Pasetto, Carlos Carrasco-Gonzalez, Jose L. Gomez +7
We present unprecedented high fidelity radio images of the M87 jet. We analyzed Jansky Very Large Array (VLA) broadband, full polarization, radio data from 4 to 18 GHz. The observa…
Temperature Profiles of Hot Gas In Early Type Galaxies
Dong-Woo Kim, Liam Traynor, Alessandro Paggi +12
Using the data products of the Chandra Galaxy Atlas (Kim et al. 2019a), we have investigated the radial profiles of the hot gas temperature in 60 early type galaxies. Considering t…
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…
ASKAP reveals the radio tail structure of the Corkscrew Galaxy shaped by its passage through the Abell 3627 cluster
Bärbel S. Koribalski, Stefan W. Duchesne, Emil Lenc +12
Among the bent tail radio galaxies common in galaxy clusters are some with long, collimated tails (so-called head-tail galaxies) shaped by their interactions with the intracluster…
Characterizing Pulsars Detected in the Rapid ASKAP Continuum Survey
Akash Anumarlapudi, Anna Ehlke, Megan L. Jones +16
We present the detection of 661 known pulsars observed with the Australian SKA Pathfinder (ASKAP) telescope at 888 MHz as a part of the Rapid ASKAP Continuum Survey (RACS). Detecti…