848 citations · 3.8k across the 82 of their papers we have counts for
46 papers · 1 filter
Structure in the Magnetic Field of the Milky Way Disk and Halo traced by Faraday Rotation
John M. Dickey, Jennifer West, Alec J. M. Thomson +14
Magnetic fields in the ionized medium of the disk and halo of the Milky Way impose Faraday rotation on linearly polarized radio emission. We compare two surveys mapping the Galacti…
GASKAP-HI Pilot Survey Science III: An unbiased view of cold gas in the Small Magellanic Cloud
James Dempsey, N. M. McClure-Griffiths, Claire Murray +14
We present the first unbiased survey of neutral hydrogen (HI) absorption in the Small Magellanic Cloud (SMC). The survey utilises pilot HI observations with the Australian Square K…
SPLASH: The Southern Parkes Large-Area Survey in Hydroxyl -- Data Description & Release
J. R. Dawson, P. A. Jones, C. Purcell +17
We present the full data release for the Southern Parkes Large-Area Survey in Hydroxyl (SPLASH), a sensitive, unbiased single-dish survey of the Southern Galactic Plane in all four…
GASKAP-HI Pilot Survey Science I: ASKAP Zoom Observations of HI Emission in the Small Magellanic Cloud
N. M. Pingel, J. Dempsey, N. M. McClure-Griffiths +53
We present the most sensitive and detailed view of the neutral hydrogen (HI) emission associated with the Small Magellanic Cloud (SMC), through the combination of data from the Aus…
A Low Frequency Pilot Survey of Southern HII Regions in the Vela Constellation
Chenoa D. Tremblay, Tyler L. Bourke, James A. Green +3
Atomic ionised regions with strong continuum emission are often associated with regions of high-mass star formation and low-frequency (<2GHz) observations of these regions are need…
GASKAP Pilot Survey Science II: ASKAP Zoom Observations of Galactic 21-cm Absorption
J. M. Dickey, J. M. Dempsey, N. M. Pingel +12
Using the Australian Square Kilometre Array Pathfinder to measure 21-cm absorption spectra toward continuum background sources, we study the cool phase of the neutral atomic gas in…
Discovery of a New Population of Galactic HII Regions with Ionized Gas Velocity Gradients
Dana S. Balser, Trey V. Wenger, L. D. Anderson +4
We investigate the kinematic properties of Galactic HII regions using radio recombination line (RRL) emission detected by the Australia Telescope Compact Array (ATCA) at 4-10 GHz a…
The Global Magneto-Ionic Medium Survey: A Faraday Depth Survey of the Northern Sky Covering 1280-1750 MHz
M. Wolleben, T. L. Landecker, K. A. Douglas +17
The Galactic interstellar medium hosts a significant magnetic field, which can be probed through the synchrotron emission produced from its interaction with relativistic electrons.…
The MACH HI absorption survey I: Physical conditions of cold atomic gas outside of the Galactic plane
Claire E. Murray, Snežana Stanimirović, Carl Heiles +5
Tracing the transition between the diffuse atomic interstellar medium (ISM) and cold, dense gas is crucial for deciphering the star formation cycle in galaxies. Here we present MAC…
The Global Magneto-Ionic Medium Survey (GMIMS): The brightest polarized region in the Southern sky at 75cm and its implications for Radio Loop II
Alec J. M. Thomson, T. L. Landecker, N. M. McClure-Griffiths +16
Using the Global Magneto-Ionic Medium Survey (GMIMS) Low-Band South (LBS) southern sky polarization survey, covering 300 to 480 MHz at 81 arcmin resolution, we reveal the brightest…
Tiny-scale Structure Discovered toward PSR B155750
Mengting Liu, Marko Krčo, Di Li +7
Optical depth variations in the Galactic neutral interstellar medium (ISM) with spatial scales from hundreds to thousands of astronomical units have been observed through HI absorp…
The Southern HII Region Discovery Survey. II. The Full Catalog
Trey V. Wenger, J. R. Dawson, John M. Dickey +6
The Southern HII Region Discovery Survey (SHRDS) is a 900 hour Australia Telescope Compact Array 4-10 GHz radio continuum and radio recombination line (RRL) survey of Galactic HII…
Small-scale structure traced by neutral hydrogen absorption in the direction of multiple-component radio continuum sources
Daniel R. Rybarczyk, Snezana Stanimirovic, Ellen G. Zweibel +4
We have studied the small scale distribution of atomic hydrogen (HI) using 21-cm absorption spectra against multiple-component background radio continuum sources from the 21-SPONGE…
Revealing The CO X-factor In Dark Molecular Gas through Sensitive ALMA Absorption Observations
Gan Luo, Di Li, Ningyu Tang +11
Carbon-bearing molecules, particularly CO, have been widely used as tracers of molecular gas in the interstellar medium (ISM). In this work, we aim to study the properties of molec…
The 3D Kinematics of Gas in the Small Magellanic Cloud
Claire E. Murray, J. E. G. Peek, Enrico M. Di Teodoro +3
We investigate the kinematics of neutral gas in the Small Magellanic Cloud (SMC) and test the hypothesis that it is rotating in a disk. To trace the 3D motions of the neutral gas d…
Molecular gas in the outflow of the Small Magellanic Cloud
Enrico M. Di Teodoro, N. M. McClure-Griffiths, C. De Breuck +7
We report the first evidence of molecular gas in two atomic hydrogen (HI) clouds associated with gas outflowing from the Small Magellanic Cloud (SMC). We used the Atacama Pathfinde…
An ATCA Survey of HI Absorption in the Magellanic Clouds I: HI Gas Temperature Measurements in the Small Magellanic Cloud
Katherine Jameson, Naomi McClure-Griffiths, Boyang Liu +9
We present the first results from the Small Magellanic Cloud portion of a new Australia Telescope Compact Array (ATCA) HI absorption survey of both of the Magellanic Clouds, compri…
Through thick or thin: Multiple components of the magneto-ionic medium towards the nearby region Sharpless 2-27 revealed by Faraday tomography
Alec J. M. Thomson, T. L. Landecker, John M. Dickey +12
Sharpless 2-27 (Sh2-27) is a nearby region excited by Oph. We present observations of polarized radio emission from 300 to 480MHz towards Sh2-27, made…
The Galactic Magneto-Ionic Medium Survey: Moments of the Faraday Spectra
John M. Dickey, T. L. Landecker, A. J. M. Thomson +11
Faraday rotation occurs along every line of sight in the Galaxy; Rotation Measure (RM) synthesis allows a three-dimensional representation of the interstellar magnetic field. This…
The Southern HII Region Discovery Survey I: The Bright Catalog
Trey V. Wenger, John. M. Dickey, C. H. Jordan +7
The census of Galactic HII regions is vastly incomplete in the Southern sky. We use the Australia Telescope Compact Array (ATCA) to observe 4-10 GHz radio continuum and hydrogen ra…
On the dynamics of the Small Magellanic Cloud through high-resolution ASKAP HI observations
E. M. Di Teodoro, N. M. McClure-Griffiths, K. E. Jameson +10
We use new high-resolution HI data from the Australian Square Kilometre Array Pathfinder (ASKAP) to investigate the dynamics of the Small Magellanic Cloud (SMC). We model the HI ga…
Cold gas outflows from the Small Magellanic Cloud traced with ASKAP
N. M. McClure-Griffiths, H. Dénes, J. M. Dickey +19
Feedback from massive stars plays a critical role in the evolution of the Universe by driving powerful outflows from galaxies that enrich the intergalactic medium and regulate star…
Science with an ngVLA: Radio Recombination Lines from HII Regions
Dana S. Balser, L. D. Anderson, T. M. Bania +4
The ngVLA will create a Galaxy-wide, volume-limited sample of HII regions; solve some long standing problems in the physics of HII regions; and provide an extinction-free star form…
Ghost of a Shell: Magnetic Fields of Galactic Supershell GSH 006157
Alec J. M. Thomson, N. M. McClure-Griffiths, Christoph Federrath +6
We identify a counterpart to a Galactic supershell in diffuse radio polarisation, and use this to determine the magnetic fields associated with this object. GSH 006157 has pe…