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We present the SARAO MeerKAT Galactic Plane Survey (SMGPS), a 1.3 GHz continuum survey of almost half of the Galactic Plane (251\deg $\le l \le$ 358\deg and 2\deg $\le l \le$ 61\deg at $|b| \le 1.5\deg $). SMGPS is the largest, most…

Astrophysics of Galaxies · Physics 2024-05-03 S. Goedhart , W. D. Cotton , F. Camilo , M. A. Thompson , G. Umana , M. Bietenholz , P. A. Woudt , L. D. Anderson , C. Bordiu , D. A. H. Buckley , C. S. Buemi , F. Bufano , F. Cavallaro , H. Chen , J. O. Chibueze , D. Egbo , B. S. Frank , M. G. Hoare , A. Ingallinera , T. Irabor , R. C. Kraan-Korteweg , S. Kurapati , P. Leto , S. Loru , M. Mutale , W. O. Obonyo , A. Plavin , S. H. A. Rajohnson , A. Rigby , S. Riggi , M. Seidu , P. Serra , B. M. Smart , B. W. Stappers , N. Steyn , M. Surnis , C. Trigilio , G. M. Williams , T. D. Abbott , R. M. Adam , K. M. B. Asad , T. Baloyi , E. F. Bauermeister , T. G. H. Bennet , H. Bester , A. G. Botha , L. R. S. Brederode , S. Buchner , J. P. Burger , T. Cheetham , K. Cloete , M. S. de Villiers , D. I. L. de Villiers , L. J. du Toit , S. W. P. Esterhuyse , B. L. Fanaroff , D. J. Fourie , R. R. G. Gamatham , T. G. Gatsi , M. Geyer , M. Gouws , S. C. Gumede , I. Heywood , A. Hokwana , S. W. Hoosen , D. M. Horn , L. M. G. Horrell , B. V. Hugo , A. I. Isaacson , G. I. G. Józsa , J. L. Jonas , J. D. B. L. Jordaan , A. F. Joubert , R. P. M. Julie , F. B. Kapp , N. Kriek , H. Kriel , V. K. Krishnan , T. W. Kusel , L. S. Legodi , R. Lehmensiek , R. T. Lord , P. S. Macfarlane , L. G. Magnus , C. Magozore , J. P. L. Main , J. A. Malan , J. R. Manley , S. J. Marais , M. D. J. Maree , A. Martens , P. Maruping , K. McAlpine , B. C. Merry , M. Mgodeli , R. P. Millenaar , O. J. Mokone , T. E. Monama , W. S. New , B. Ngcebetsha , K. J. Ngoasheng , G. D. Nicolson , M. T. Ockards , N. Oozeer , S. S. Passmoor , A. A. Patel , A. Peens-Hough , S. J. Perkins , A. J. T. Ramaila , S. M. Ratcliffe , R. Renil , L. L. Richter , S. Salie , N. Sambu , C. T. G. Schollar , L. C. Schwardt , R. L. Schwartz , M. Serylak , R. Siebrits , S. K. Sirothia , M. J. Slabber , O. M. Smirnov , A. J. Tiplady , T. J. van Balla , A. van der Byl , V. Van Tonder , A. J. Venter , M. Venter , M. G. Welz , L. P. Williams

We present a search for prompt radio emission associated with the short-duration gamma-ray burst (GRB) 150424A using the Murchison Widefield Array (MWA) at frequencies from 80-133 MHz. Our observations span delays of 23 s-30 min after the…

High Energy Astrophysical Phenomena · Physics 2015-12-02 D. L. Kaplan , A. Rowlinson , K. W. Bannister , M. E. Bell , S. D. Croft , T. Murphy , S. J. Tingay , R. B. Wayth , A. Williams

The AMI Galactic Plane Survey (AMIGPS) is a large area survey of the outer Galactic plane to provide arcminute resolution images at milli-Jansky sensitivity in the centimetre-wave band. Here we present the first data release of the survey,…

We report the first astrophysical application of the technique of wide-field Interplanetary Scintillation (IPS) with the Murchison Widefield Array (MWA). This powerful technique allows us to identify and measure sub-arcsecond compact…

High Energy Astrophysical Phenomena · Physics 2018-01-10 R. Chhetri , J. Morgan , R. D. Ekers , J-P Macquart , E. M. Sadler , M. Giroletti , J. R. Callingham , S. J. Tingay

Understanding diffuse Galactic radio emission is interesting both in its own right and for minimizing foreground contamination of cosmological measurements. Cosmic Microwave Background experiments have focused on frequencies > 10 GHz,…

We present Atacama Large Millimeter/submillimiter Array (ALMA) high sensitivity ($\sigma_P \simeq 0.4\,$mJy) polarimetric observations at $97.5\,$GHz (Band 3) of a complete sample of $32$ extragalactic radio sources drawn from the faint…

We present a large-scale clustering analysis of radio galaxies in the Very Large Array (VLA) Faint Images of the Radio Sky at Twenty-cm (FIRST) survey over the Galaxy And Mass Assembly (GAMA) survey area, limited to S1.4 GHz >1 mJy with…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 S. N. Lindsay , M. J. Jarvis , M. G. Santos , M. J. I. Brown , S. M. Croom , S. P. Driver , A. M. Hopkins , J. Liske , J. Loveday , P. Norberg , A. S. G. Robotham

The use of continuum emission radio galaxies as cosmological tracers of the large-scale structure will soon move into a new phase. Upcoming surveys from the Australian Square Kilometre Array Pathfinder (ASKAP), MeerKAT, and the Square…

Cosmology and Nongalactic Astrophysics · Physics 2021-07-28 Jacobo Asorey , David Parkinson

We report characterization results for an engineering prototype of a next-generation low-frequency radio astronomy array. This prototype, which we refer to as the Aperture Array Verification System 0.5 (AAVS0.5), is a sparse pseudo-random…

Synchrotron emission pervades the Galactic plane at low radio frequencies, originating from cosmic ray electrons interacting with the Galactic magnetic field. Using a low-frequency radio telescope, the Murchison Widefield Array (MWA), we…

The high-frequency radio sky, like the gamma-ray sky surveyed by the Fermi satellite, is dominated by flat spectrum radio quasars and BL Lac objects at bright flux levels. To investigate the relationship between radio and gamma-ray emission…

High Energy Astrophysical Phenomena · Physics 2015-05-18 Elizabeth K. Mahony , Elaine M. Sadler , Tara Murphy , Ronald D. Ekers , Philip G. Edwards , Marcella Massardi

MeerKAT's large number of antennas, spanning 8 km with a densely packed 1 km core, create a powerful instrument for wide-area surveys, with high sensitivity over a wide range of angular scales. The MeerKAT Galaxy Cluster Legacy Survey…

Astrophysics of Galaxies · Physics 2022-01-19 K. Knowles , W. D. Cotton , L. Rudnick , F. Camilo , S. Goedhart , R. Deane , M. Ramatsoku , M. F. Bietenholz , M. Brüggen , C. Button , H. Chen , J. O. Chibueze , T. E. Clarke , F. de Gasperin , R. Ianjamasimanana , G. I. G. Józsa , M. Hilton , K. C. Kesebonye , K. Kolokythas , R. C. Kraan-Korteweg , G. Lawrie , M. Lochner , S. I. Loubser , P. Marchegiani , N. Mhlahlo , K. Moodley , E. Murphy , B. Namumba , N. Oozeer , V. Parekh , D. S. Pillay , S. S. Passmoor , A. J. T. Ramaila , S. Ranchod , E. Retana-Montenegro , L. Sebokolodi , S. P. Sikhosana , O. Smirnov , K. Thorat , T. Venturi , T. D. Abbott , R. M. Adam , G. Adams , M. A. Aldera , E. F. Bauermeister , T. G. H. Bennett , W. A. Bode , D. H. Botha , A. G. Botha , L. R. S. Brederode , S. Buchner , J. P. Burger , T. Cheetham , D. I. L. de Villiers , M. A. Dikgale-Mahlakoana , L. J. du Toit , S. W. P. Esterhuyse , G. Fadana , B. L. Fanaroff , S. Fataar , A. R. Foley , D. J. Fourie , B. S. Frank , R. R. G. Gamatham , T. G. Gatsi , M. Geyer , M. Gouws , S. C. Gumede , I. Heywood , M. J. Hlakola , A. Hokwana , S. W. Hoosen , D. M. Horn , J. M. G. Horrell , B. V. Hugo , A. R. Isaacson , J. L. Jonas , J. D. B. Jordaan , A. F. Joubert , R. P. M. Julie , F. B. Kapp , V. A. Kasper , J. S. Kenyon , P. P. A. Kotzé , A. G. Kotze , N. Kriek , H. Kriel , V. K. Krishnan , T. W. Kusel , L. S. Legodi , R. Lehmensiek , D. Liebenberg , R. T. Lord , B. M. Lunsky , K. Madisa , L. G. Magnus , J. P. L. Main , A. Makhaba , S. Makhathini , J. A. Malan , J. R. Manley , S. J. Marais , M. D. J. Maree , A. Martens , T. Mauch , K. McAlpine , B. C. Merry , R. P. Millenaar , O. J. Mokone , T. E. Monama , M. C. Mphego , W. S. New , B. Ngcebetsha , K. J. Ngoasheng , M. T. Ockards , A. J. Otto , A. A. Patel , A. Peens-Hough , S. J. Perkins , N. M. Ramanujam , Z. R. Ramudzuli , S. M. Ratcliffe , R. Renil , A. Robyntjies , A. N. Rust , S. Salie , N. Sambu , C. T. G. Schollar , L. C. Schwardt , R. L. Schwartz , M. Serylak , R. Siebrits , S. K. Sirothia , M. Slabber , L. Sofeya , B. Taljaard , C. Tasse , A. J. Tiplady , O. Toruvanda , S. N. Twum , T. J. van Balla , A. van der Byl , C. van der Merwe , C. L. van Dyk , V. Van Tonder , R. Van Wyk , A. J. Venter , M. Venter , M. G. Welz , L. P. Williams , B. Xaia

The Arcminute Microkelvin Imager Galactic Plane Survey (AMIGPS) provides mJy-sensitivity, arcminute-resolution interferometric images of the northern Galactic plane at $\approx$ 16 GHz. The first data release covered $76^{\circ} \lessapprox…

The MAVERIC survey is the first deep radio continuum imaging survey of Milky Way globular clusters, with a central goal of finding and classifying accreting compact binaries, including stellar-mass black holes. Here we present radio source…

The radio-wavelength detection of extensive air showers (EAS) initiated by cosmic-ray interactions in the Earth's atmosphere is a promising technique for investigating the origin of these particles and the physics of their interactions. The…

Instrumentation and Methods for Astrophysics · Physics 2021-03-29 A. Williamson , C. W. James , S. J. Tingay , S. J. McSweeney , S. M. Ord

We present the full source catalogue from the Australia Telescope 20 GHz (AT20G) Survey. The AT20G is a blind radio survey carried out at 20 GHz with the Australia Telescope Compact Array (ATCA) from 2004 to 2008, and covers the whole sky…

We present the second catalogue of accurate positions and correlated flux densities for 1100 compact extragalactic radio sources that were not observed before 2008 at high angular resolution. The catalogue spans the declination range -90…

Instrumentation and Methods for Astrophysics · Physics 2019-04-15 Leonid Petrov , Alet de Witt , Elaine M. Sadler , Chris Phillips , Shinji Horiuchi

We report results of a serendipitous hard X-ray (3--20 keV), nearly all-sky (|b|>10deg) survey based on RXTE/PCA observations performed during satellite reorientations in 1996--2002. The survey is 80% (90%) complete to a 4$\sigma$ limiting…

Astrophysics · Physics 2009-11-10 M. Revnivtsev , S. Sazonov , K. Jahoda , M. Gilfanov

This is the third in a series of papers that present observations and results for a sample of 76 ultra-steep-spectrum radio sources designed to find galaxies at high redshift. Here we present multi-frequency radio observations, from the…

Astrophysics · Physics 2009-11-11 I. J. Klamer , R. D. Ekers , J. J. Bryant , R. W. Hunstead , E. M. Sadler , C. De Breuck
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