Explanipedia

The Radio Flare and Multiwavelength Afterglow of the Short GRB 231117A: Energy Injection from a Violent Shell Collision Open

G. E. Anderson, Gavin P. Lamb, B. P. Gompertz, Lauren Rhodes, A. Martín-Carrillo , et al. · 2025

We present the early radio detection and multiwavelength modeling of the short gamma-ray burst (GRB) 231117A at redshift z = 0.257. The Australia Telescope Compact Array automatically triggered a 9 hr observation of GRB 231117A at 5.5 and …

A Search for Low-frequency Radio Pulses from Long Gamma-Ray Bursts with the Murchison Widefield Array Open

Fan Xu, G. E. Anderson, Jun Tian, Bradley W. Meyers, S. J. Tingay , et al. · 2025

It has been proposed that coherent radio emission could be emitted during or shortly following a gamma-ray burst (GRB). Here we present a low-frequency (170–200 MHz) search for radio pulses associated with long-duration GRBs using the Murc…

The Early Radio Afterglow of Short GRB 230217A Open

G. E. Anderson, Genevieve Schroeder, A. J. van der Horst, Lauren Rhodes, A. Rowlinson , et al. · 2024

We present the radio afterglow of short gamma-ray burst (GRB) 230217A, which was detected less than 1 day after the gamma-ray prompt emission with the Australia Telescope Compact Array (ATCA) and the Karl G. Jansky Very Large Array. The AT…

The early radio afterglow of short GRB 230217A Open

G. E. Anderson, Genevieve Schroeder, A. J. van der Horst, Lauren Rhodes, A. Rowlinson , et al. · 2024

We present the radio afterglow of short gamma-ray burst (GRB) 230217A, which was detected less than 1 day after the gamma-ray prompt emission with the Australia Telescope Compact Array (ATCA) and the Karl G. Jansky Very Large Array (VLA). …

Constraints on Short Gamma-Ray Burst Physics and Their Host Galaxies from Systematic Radio Follow-up Campaigns Open

S. I. Chastain, A. J. van der Horst, G. E. Anderson, L. Rhodes, Daniele d’Antonio , et al. · 2024

Short gamma-ray bursts (GRBs) are explosive transients caused by binary mergers of compact objects containing at least one neutron star. Multi-wavelength afterglow observations provide constraints on the physical parameters of the jet, its…

Constraints on short gamma-ray burst physics and their host galaxies from systematic radio follow-up campaigns Open

S. I. Chastain, A. J. van der Horst, G. E. Anderson, Lauren Rhodes, Daniele d’Antonio , et al. · 2024

Short gamma-ray bursts (GRBs) are explosive transients caused by binary mergers of compact objects containing at least one neutron star. Multiwavelength afterglow observations provide constraints on the physical parameters of the jet, its …

A weather modelling software toolkit for planetary science applications  Open

Martin Cupák, Eleanor K. Sansom, Hadrien A. R. Devillepoix, M. C. Towner, Srikanth Kompella , et al. · 2024

Fine resolution atmospheric models are used for a suite of planetary science applications, from the prediction of meteorite or human-made object fall locations, to modelling infrasound wave propagation. No matter the application, the resea…

GaLactic and Extragalactic All-sky Murchison Widefield Array eXtended (GLEAM-X) survey II: Second Data Release Open

Kathryn Ross, N. Hurley‐Walker, T. J. Galvin, Brandon Venville, S. W. Duchesne , et al. · 2024

We present the second data release for the GaLactic and Extragalactic All-sky Murchison Widefield Array eXtended (GLEAM-X) survey. This data release is an area of 12 892-deg $^2$ around the South Galactic Pole region covering 20 h40 m $\le…

MWA rapid follow-up of gravitational wave transients: prospects for detecting prompt radio counterparts Open

Jia-Jin Tian, G. E. Anderson, A J Cooper, K. Gourdji, M. Sokołowski , et al. · 2023

We present and evaluate the prospects for detecting coherent radio counterparts to gravitational wave (GW) events using Murchison Widefield Array (MWA) triggered observations. The MWA rapid-response system, combined with its buffering mode…

Demonstration of orbit determination for LEO objects using the Murchison Widefield Array Open

Steve Prabu, P. J. Hancock, X. Zhang, S. J. Tingay · 2023

The rapidly increasing number of satellites in Earth's orbit motivates the development of Space Domain Awareness (SDA) capabilities using wide field-of-view sensor systems that can perform simultaneous detections. This work demonstrates pr…

Demonstration of Orbit Determination for LEO Objects using the Murchison Widefield Array Open

Steve Prabu, P. J. Hancock, Xianbo Xiang, S. J. Tingay · 2023

The rapidly increasing number of satellites in Earth's orbit motivates the development of Space Domain Awareness (SDA) capabilities using wide field-of-view sensor systems that can perform simultaneous detections. This work demonstrates pr…

Rapid radio brightening of GRB 210702A Open

G. E. Anderson, T. D. Russell, H. M. Fausey, A. J. van der Horst, P. J. Hancock , et al. · 2023

We observed the rapid radio brightening of GRB 210702A with the Australia Telescope Compact Array (ATCA) just 11 h post-burst, tracking early-time radio variability over a 5 h period on ∼15 min time-scales at 9.0, 16.7, and 21.2 GHz. A bro…

VIP: A Python package for high-contrast imaging Open

Valentin Christiaens, Carlos Gómez González, R. Farkas, Carl-Henrik Dahlqvist, E. Nasedkin , et al. · 2023

peer reviewed

The Southern-sky MWA Rapid Two-metre (SMART) pulsar survey—II. Survey status, pulsar census, and first pulsar discoveries Open

N. D. R. Bhat, N. A. Swainston, S. J. McSweeney, Mengyao Xue, Bradley W. Meyers , et al. · 2023

In Paper I, we presented an overview of the Southern-sky MWA Rapid Two-metre (SMART) survey, including the survey design and search pipeline. While the combination of MWA’s large field-of-view and the voltage capture system brings a survey…

The Southern-sky MWA Rapid Two-metre (SMART) pulsar survey—I. Survey design and processing pipeline Open

N. D. R. Bhat, N. A. Swainston, S. J. McSweeney, Mengyao Xue, Bradley W. Meyers , et al. · 2023

We present an overview of the Southern-sky MWA Rapid Two-metre (SMART) pulsar survey that exploits the Murchison Widefield Array’s large field of view and voltage-capture system to survey the sky south of 30 $^{\circ}$ in declination for p…

The Southern-sky MWA Rapid Two-metre (SMART) pulsar survey—II. Survey status, pulsar census, and first pulsar discoveries – ADDENDUM Open

N. D. R. Bhat, N. A. Swainston, S. J. McSweeney, Mengyao Xue, Bradley W. Meyers , et al. · 2023

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MWA rapid follow-up of gravitational wave transients: Prospects for detecting prompt radio counterparts Open

Jia-Jin Tian, G. E. Anderson, A J Cooper, K. Gourdji, M. Sokołowski , et al. · 2023

We present and evaluate the prospects for detecting coherent radio counterparts to gravitational wave (GW) events using Murchison Widefield Array (MWA) triggered observations. The MWA rapid-response system, combined with its buffering mode…

A targeted search for repeating fast radio bursts with the MWA Open

Jia-Jin Tian, G. E. Anderson, P. J. Hancock, J. C. A. Miller‐Jones, M. Sokołowski , et al. · 2022

We present a targeted search for low-frequency (144–215 MHz) fast radio burst (FRB) emission from five repeating FRBs using 23.3 h of archival data taken with the Murchison Widefield Array (MWA) voltage capture system (VCS) between 2014 Se…

A targeted search for repeating fast radio bursts with the MWA Open

J. Tian, G. E. Anderson, P. J. Hancock, J. C. A. Miller‐Jones, M. Sokołowski , et al. · 2022

We present a targeted search for low-frequency (144--215\,MHz) FRB emission from five repeating FRBs using 23.3\,hr of archival data taken with the Murchison Widefield Array (MWA) Voltage Capture System (VCS) between 2014 September and 202…

Independent Discovery of a Nulling Pulsar with Unusual Subpulse Drifting Properties with the Murchison Widefield Array Open

S. J. McSweeney, N. D. R. Bhat, N. A. Swainston, K. R. Smith, Sanjay Kudale , et al. · 2022

We report the independent discovery of PSR J0026-1955 with the Murchison Widefield Array (MWA) in the ongoing Southern-sky MWA Rapid Two-metre pulsar survey. J0026-1955 has a period of ∼1.306 s, a dispersion measure of ∼20.869 pc cm −3 , a…

Independent discovery of a nulling pulsar with unusual sub-pulse drifting properties with the Murchison Widefield Array Open

S. J. McSweeney, N. D. R. Bhat, N. A. Swainston, K. R. Smith, Sanjay Kudale , et al. · 2022

We report the independent discovery of PSR J0027-1956 with the Murchison Widefield Array (MWA) in the ongoing Southern-sky MWA Rapid Two-meter (SMART) pulsar survey. J0027-1956 has a period of ~1.306 s, a dispersion measure (DM) of ~20.869…

High time resolution search for prompt radio emission from the long GRB 210419A with the Murchison Widefield Array Open

J Tian, G. E. Anderson, P. J. Hancock, J. C. A. Miller‐Jones, M. Sokołowski , et al. · 2022

We present a low-frequency (170–200 MHz) search for prompt radio emission associated with the long GRB 210419A using the rapid-response mode of the Murchison Widefield Array (MWA), triggering observations with the Voltage Capture System fo…

Improved sensitivity for space domain awareness observations with the murchison widefield array Open

Steve Prabu, P. J. Hancock, X. Zhang, S. J. Tingay, Torrance Hodgson , et al. · 2022

GaLactic and Extragalactic All-sky Murchison Widefield Array survey eXtended (GLEAM-X) I: Survey Description and Initial Data Release Open

N. Hurley‐Walker, T. J. Galvin, S. W. Duchesne, X. Zhang, John Morgan , et al. · 2022

We describe a new low-frequency wideband radio survey of the southern sky. Observations covering 72 - 231 MHz and Declinations south of $+30^\circ$ have been performed with the Murchison Widefield Array "extended" Phase II configuration ov…

The GLEAMing of the first supermassive black holes: II. A new sample of high-redshift radio galaxy candidates Open

J. W. Broderick, G. Drouart, N. Seymour, T. J. Galvin, N. Wright , et al. · 2022

While unobscured and radio-quiet active galactic nuclei are regularly being found at redshifts $z > 6$, their obscured and radio-loud counterparts remain elusive. We build upon our successful pilot study, presenting a new sample of low-fre…

Data for injection and recovery test performed in the paper "Improved Sensitivity for Space Domain Awareness Observations with the Murchison Widefield Array" Open

Steve Prabu, P. J. Hancock, Xiang Zhang, S. J. Tingay, Torrance Hodgon , et al. · 2022

This repo contains the script and the pool of noise images used to perform the injection and recovery test in the paper titled "Improved Sensitivity for Space Domain Awareness Observations with the Murchison Widefield Array"

Data for injection and recovery test performed in the paper "Improved Sensitivity for Space Domain Awareness Observations with the Murchison Widefield Array" Open

Steve Prabu, P. J. Hancock, Xiang Zhang, S. J. Tingay, Torrance Hodgon , et al. · 2022

This repo contains the script and the pool of noise images used to perform the injection and recovery test in the paper titled "Improved Sensitivity for Space Domain Awareness Observations with the Murchison Widefield Array"

Data for injection and recovery test performed in the paper "Improved Sensitivity for Space Domain Awareness Observations with the Murchison Widefield Array" Open

Steve Prabu, P. J. Hancock, Xiang Zhang, S. J. Tingay, Torrance Hodgon , et al. · 2022

This repo contains the script and the pool of noise images used to perform the injection and recovery test in the paper titled "Improved Sensitivity for Space Domain Awareness Observations with the Murchison Widefield Array"

A radio transient with unusually slow periodic emission Open

N. Hurley‐Walker, X. Zhang, Arash Bahramian, S. J. McSweeney, Tyrone N O’Doherty , et al. · 2022

GaLactic and Extragalactic All-sky Murchison Widefield Array survey eXtended (GLEAM-X) I: Survey description and initial data release Open

N. Hurley‐Walker, T. J. Galvin, S. W. Duchesne, John Morgan, P. J. Hancock , et al. · 2022

We describe a new low-frequency wideband radio survey of the southern sky. Observations covering 72–231 MHz and Declinations south of $+30^\circ$ have been performed with the Murchison Widefield Array “extended” Phase II configuration over…

P. J. Hancock YOU? Author Swipe