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A First Transients Survey with JWST: the FLARE project
Lifan Wang, D. Baade, E. Baron +43
JWST was conceived and built to answer one of the most fundamental questions that humans can address empirically: "How did the Universe make its first stars?". Our First Lights At…
The jet/wind outflow in Centaurus A: a local laboratory for AGN feedback
B. McKinley, S. J. Tingay, E. Carretti +20
We present new radio and optical images of the nearest radio galaxy Centaurus A and its host galaxy NGC 5128. We focus our investigation on the northern transition region, where en…
Calibration and Stokes Imaging with Full Embedded Element Primary Beam Model for the Murchison Widefield Array
M. Sokolowski, T. Colegate, A. T. Sutinjo +22
The Murchison Widefield Array (MWA), located in Western Australia, is one of the low-frequency precursors of the international Square Kilometre Array (SKA) project. In addition to…
Lack of clustering in low-redshift 21-cm intensity maps cross-correlated with 2dF galaxy densities
C. J. Anderson, N. J. Luciw, Y. -C. Li +13
We report results from 21-cm intensity maps acquired from the Parkes radio telescope and cross-correlated with galaxy maps from the 2dF galaxy survey. The data span the redshift ra…
The Spectral Energy Distribution of Powerful Starburst Galaxies I: Modelling the Radio Continuum
T J Galvin, N Seymour, J Marvil +24
We have acquired radio continuum data between 70\,MHz and 48\,GHz for a sample of 19 southern starburst galaxies at moderate redshifts () with the aim of separat…
Spectral-line Observations Using a Phased Array Feed on the Parkes Telescope
Tristan Reynolds, Lister Staveley-Smith, Jonghwan Rhee +5
We present first results from pilot observations using a phased array feed (PAF) mounted on the Parkes 64-m radio telescope. The observations presented here cover a frequency range…
2D Bayesian automated tilted-ring fitting of disk galaxies in large HI galaxy surveys: 2DBAT
Se-Heon Oh, Lister Staveley-Smith, Kristine Spekkens +2
We present a novel algorithm based on a Bayesian method for 2D tilted-ring analysis of disk galaxy velocity fields. Compared to the conventional algorithms based on a chi-squared m…
A deep Parkes HI survey of the Sculptor group and filament: HI mass function and environment
T. Westmeier, D. Obreschkow, M. Calabretta +8
We present the results of a deep survey of the nearby Sculptor group and the associated Sculptor filament taken with the Parkes 64-m radio telescope in the 21-cm emission line of n…
The Local Volume HI Survey: star formation properties
Jing Wang, Baerbel S. Koribalski, Tom H. Jarrett +12
We built a multi-wavelength dataset for galaxies from the Local Volume HI Survey (LVHIS), which comprises 82 galaxies. We also select a sub-sample of ten large galaxies for investi…
The Radio Remnant of Supernova 1987A - A Broader View
G. Zanardo, L. Staveley-Smith, C. -Y. Ng +4
Supernova remnants (SNRs) are powerful particle accelerators. As a supernova (SN) blast wave propagates through the circumstellar medium (CSM), electrons and protons scatter across…
The large-scale environment from cosmological simulations I: The baryonic cosmic web
Weiguang Cui, Alexander Knebe, Gustavo Yepes +5
Using a series of cosmological simulations that includes one dark-matter-only (DM-only) run, one gas cooling-star formation-supernovae feedback (CSF) run and one that additionally…
A high resolution foreground model for the MWA EoR1 field: model and implications for EoR power spectrum analysis
P. Procopio, R. B. Wayth, J. Line +23
The current generation of experiments aiming to detect the neutral hydrogen signal from the Epoch of Reionisation (EoR) is likely to be limited by systematic effects associated wit…
2MTF VI. Measuring the velocity power spectrum
Cullan Howlett, Lister Staveley-Smith, Pascal J. Elahi +7
We present measurements of the velocity power spectrum and constraints on the growth rate of structure , at redshift zero, using the peculiar motions of 2,062 galaxies in t…
Very Deep Inside the SN 1987A Core Ejecta: Molecular Structures Seen in 3D
F. J. Abellán, R. Indebetouw, J. M. Marcaide +21
Most massive stars end their lives in core-collapse supernova explosions and enrich the interstellar medium with explosively nucleosynthesized elements. Following core collapse, th…
HI properties and star formation history of a fly-by pair of blue compact dwarf galaxies
Jinhyub Kim, Aeree Chung, O. Ivy Wong +3
A fly-by interaction has been suggested to be one of the major explanations for enhanced star formation in blue compact dwarf (BCD) galaxies, yet no direct evidence for this scenar…
Tracing HI Beyond the Local Universe
Martin Meyer, Aaron Robotham, Danail Obreschkow +3
The SKA and its pathfinders will enable studies of HI emission at higher redshifts than ever before. In moving beyond the local Universe, this will require the use of cosmologicall…
ALMA spectral survey of Supernova 1987A --- molecular inventory, chemistry, dynamics and explosive nucleosynthesis
M. Matsuura, R. Indebetouw, S. Woosley +26
We report the first molecular line survey of Supernova 1987A in the millimetre wavelength range. In the ALMA 210--300 and 340--360 GHz spectra, we detected cold (20--170 K) CO, 28S…
Low frequency spectral energy distributions of radio pulsars detected with the Murchison Widefield Array
Tara Murphy, David L. Kaplan, Martin E. Bell +24
We present low-frequency spectral energy distributions of 60 known radio pulsars observed with the Murchison Widefield Array (MWA) telescope. We searched the GaLactic and Extragala…
Limiting Magnetic Fields in the Cosmic Web with Diffuse Radio Emission
S. Brown, T. Vernstrom, E. Carretti +7
We set limits on the presence of the synchrotron cosmic web through the cross-correlation of the 2.3 GHz S-PASS survey with a model of the local cosmic web derived from constrained…
A new perspective on turbulent Galactic magnetic fields through comparison of linear polarisation decomposition techniques
J. -F. Robitaille, A. M. M. Scaife, E. Carretti +8
We compare two rotationally invariant decomposition techniques on linear polarisation data: the spin-2 spherical harmonic decomposition in two opposite parities, the - and -m…
A southern-sky total intensity source catalogue at 2.3 GHz from S-band Polarisation All-Sky Survey data
B. W. Meyers, N. Hurley-Walker, P. J. Hancock +6
The S-band Polarisation All-Sky Survey (S-PASS) has observed the entire southern sky using the 64-metre Parkes radio telescope at 2.3GHz with an effective bandwidth of 184MHz. The…
Spectral energy distribution and radio halo of NGC 253 at low radio frequencies
A. D. Kapinska, L. Staveley-Smith, R. Crocker +67
We present new radio continuum observations of NGC253 from the Murchison Widefield Array at frequencies between 76 and 227 MHz. We model the broadband radio spectral energy distrib…
HIPSR: A Digital Signal Processor for the Parkes 21-cm Multibeam Receiver
D. C. Price, L. Staveley-Smith, M. Bailes +5
HIPSR (HI-Pulsar) is a digital signal processing system for the Parkes 21-cm Multibeam Receiver that provides larger instantaneous bandwidth, increased dynamic range, and more sign…
A study of halo and relic radio emission in merging clusters using the Murchison Widefield Array
L. T. George, K. S. Dwarakanath, M. Johnston-Hollitt +18
We have studied radio haloes and relics in nine merging galaxy clusters using the Murchison Widefield Array (MWA). The images used for this study were obtained from the GaLactic an…