The Murchison widefield array: The square kilometre array precursor at low radio frequencies
Steven Tingay,Robert F. Goeke,Judd D. Bowman,David Emrich,Stephen M. Ord,Daniel A. Mitchell,Miguel F. Morales,T. Booler,Brian Crosse,Randall B. Wayth,Colin J. Lonsdale,S. E. Tremblay,D. Pallot,T. Colegate,Andreas Wicenec,Nadia Kudryavtseva,W. Arcus,David G. Barnes,Gianni Bernardi,Frank H. Briggs,S. Burns,John D. Bunton,Roger J. Cappallo,Brian E. Corey,Avinash A. Deshpande,Ludi deSouza,Bryan Gaensler,Lincoln J. Greenhill,Peter J. Hall,Bryna J. Hazelton,David Herne,Jacqueline N. Hewitt,Melanie Johnston-Hollitt,David L. Kaplan,Justin C. Kasper,B. B. Kincaid,R. Koenig,Eric Kratzenberg,Mervyn J. Lynch,Benjamin McKinley,Stephen R. McWhirter,Edward H. Morgan,Divya Oberoi,Joseph Pathikulangara,Thiagaraj Prabu,Ron Remillard,Alan E. E. Rogers,A. Roshi,Joseph E. Salah,Robert J. Sault,N. Udaya-Shankar,F. Schlagenhaufer,K. S. Srivani,Jamie Stevens,Ravi Subrahmanyan,M. Waterson,Rachel L. Webster,Alan R. Whitney,Andrew Williams,Christopher L. Williams,J. S. B. Wyithe +60 more
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The Murchison Widefield Array (MWA) as discussed by the authors is one of three Square Kilometre Array Precursor telescopes and is located at the MUR-astronomy Observatory in Western Australia, a location chosen for its extremely low levels of radio frequency interference.Abstract:
The Murchison Widefield Array (MWA) is one of three Square Kilometre Array Precursor telescopes and is located at the Murchison Radio-astronomy Observatory in the Murchison Shire of the mid-west of Western Australia, a location chosen for its extremely low levels of radio frequency interference. The MWA operates at low radio frequencies, 80-300 MHz, with a processed bandwidth of 30.72 MHz for both linear polarisations, and consists of 128 aperture arrays (known as tiles) distributed over a ∼3-km diameter area. Novel hybrid hardware/software correlation and a real-time imaging and calibration systems comprise the MWA signal processing backend. In this paper, the as-built MWA is described both at a system and sub-system level, the expected performance of the array is presented, and the science goals of the instrument are summarised. © 2013 Astronomical Society of Australia.read more
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Multi-messenger observations of a binary neutron star merger
Fermi Gbm,AstroSat Cadmium Zinc Telluride Imager Team,Agile Team,M H Team,Atca: Australia Telescope Compact Array,Askap: Australian Ska Pathfinder,Askap: Australian Ska Pathfinder,OzGrav, Dwf , Ast,Caastro Collaborations,J-Gem,Growth, Jagwar, Caltech-NRAO, Ttu-Nrao,NuSTAR Collaborations,Pan-STARRS,Maxi Team,Nordic Optical Telescope,ePESSTO,Grond,Mwa: Murchison Widefield Array,Lwa: Long Wavelength Array,Euro Vlbi Team,Rimas,Ratir,Ska South Africa,MeerKAT +23 more
TL;DR: A binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors.
Journal ArticleDOI
LOFAR: The LOw-Frequency ARray
M. P. van Haarlem,Michael W. Wise,Michael W. Wise,A. W. Gunst,George Heald,John McKean,Jason W. T. Hessels,Jason W. T. Hessels,de Antonius Bruyn,de Antonius Bruyn,R. Nijboer,John D. Swinbank,Richard Fallows,Michiel A. Brentjens,A. Nelles,Rainer Beck,Heino Falcke,Heino Falcke,Rob Fender,Jörg R. Hörandel,Luitje Koopmans,G. Mann,George K. Miley,Huub Röttgering,B. W. Stappers,Ralph A. M. J. Wijers,Saleem Zaroubi,M. van den Akker,A. Alexov,J. M. Anderson,Kenneth C. Anderson,A. van Ardenne,A. van Ardenne,Michel Arts,Ashish Asgekar,I. M. Avruch,I. M. Avruch,F. Batejat,L. Bähren,Martin Bell,Michael R. Bell,I. van Bemmel,P. Bennema,Mark J. Bentum,Gianni Bernardi,Philip Best,Laura Birzan,Annalisa Bonafede,Albert-Jan Boonstra,Robert Braun,Joel N. Bregman,F. Breitling,R. H. van de Brink,J. W. Broderick,P. C. Broekema,W. N. Brouw,W. N. Brouw,Marcus Brüggen,Harvey Butcher,Harvey Butcher,W. A. van Cappellen,B. Ciardi,T. Coenen,John Conway,A. H. W. M. Coolen,Arthur Corstanje,S. Damstra,O. Davies,Adam Deller,R. J. Dettmar,G. van Diepen,K. Dijkstra,P. Donker,A. Doorduin,J. Dromer,M. Drost,A. van Duin,Jochen Eislöffel,J. van Enst,Chiara Ferrari,Wilfred Frieswijk,H. Gankema,M. A. Garrett,M. A. Garrett,F. de Gasperin,M. Gerbers,E. de Geus,J.-M. Grießmeier,J.-M. Grießmeier,T. Grit,P. Gruppen,J. P. Hamaker,Tim Hassall,Matthias Hoeft,H. A. Holties,A. Horneffer,A. Horneffer,A. J. van der Horst,A. van Houwelingen,A. Huijgen,Marco Iacobelli,Hubertus Intema,Hubertus Intema,N. J. Jackson,Vibor Jelić,A. de Jong,E. Juette,D. Kant,Aris Karastergiou,A. Koers,H. Kollen,V. I. Kondratiev,E. Kooistra,Y. Koopman,A. Koster,M. Kuniyoshi,Michael Kramer,Michael Kramer,G. Kuper,P. Lambropoulos,Casey J. Law,Casey J. Law,J. van Leeuwen,J. van Leeuwen,J. Lemaitre,M. Loose,P. Maat,Giulia Macario,Sera Markoff,J. Masters,J. Masters,Rebecca McFadden,D. McKay-Bukowski,H. Meijering,H. Meulman,M. Mevius,Enno Middelberg,R. Millenaar,James Miller-Jones,James Miller-Jones,R. N. Mohan,J. D. Mol,J. Morawietz,Raffaella Morganti,Raffaella Morganti,D. D. Mulcahy,E. Mulder,H. Munk,Lambert J.M. Nieuwenhuis,R. van Nieuwpoort,J. E. Noordam,M. J. Norden,A. Noutsos,A. R. Offringa,Hans Olofsson,Amitesh Omar,Emanuela Orrú,Emanuela Orrú,R. Overeem,H. Paas,M. Pandey-Pommier,Vishambhar Pandey,Roberto Pizzo,A. G. Polatidis,D. A. Rafferty,Steve Rawlings,W. Reich,J.-P. de Reijer,J. Reitsma,G.A. Renting,P. Riemers,E. Rol,J. W. Romein,J. Roosjen,M. Ruiter,Anna M. M. Scaife,K. van der Schaaf,Bart Scheers,Bart Scheers,Pim Schellart,A. P. Schoenmakers,G. Schoonderbeek,M. Serylak,M. Serylak,Aleksandar Shulevski,J. Sluman,Oleg Smirnov,Charlotte Sobey,H. Spreeuw,Matthias Steinmetz,C. G. M. Sterks,H.-J. Stiepel,K. Stuurwold,Michel Tagger,Y. Tang,C. Tasse,I. Thomas,Satyendra Thoudam,M. C. Toribio,B. van der Tol,O. Usov,M. van Veelen,A.-J. van der Veen,S. ter Veen,Joris P. W. Verbiest,R. Vermeulen,N. J. Vermaas,C. Vocks,C. Vogt,M. de Vos,E. van der Wal,R. J. van Weeren,R. J. van Weeren,H. Weggemans,Patrick Weltevrede,Simon D. M. White,Stefan J. Wijnholds,T. Wilhelmsson,Olaf Wucknitz,Sarod Yatawatta,Philippe Zarka,Anton Zensus,J. E. van Zwieten +222 more
TL;DR: In dit artikel zullen the authors LOFAR beschrijven: van de astronomische mogelijkheden met de nieuwe telescoop tot aan een nadere technische beshrijving of het instrument.
What about the messenger
TL;DR: In this article, NAFU SA and other role players expressed some criticism about government programmes. The criticism was not so much about the objectives and content of these programmes, but rather about their accessibility, or lack thereof, to emerging farmers.
Journal ArticleDOI
wsclean: an implementation of a fast, generic wide-field imager for radio astronomy
A. R. Offringa,Benjamin McKinley,Natasha Hurley-Walker,Frank H. Briggs,Randall B. Wayth,Randall B. Wayth,David L. Kaplan,Martin Bell,Martin Bell,Lu Feng,Abraham R. Neben,J. D. Hughes,J. Rhee,Tara Murphy,Tara Murphy,N. D. R. Bhat,Gianni Bernardi,Judd D. Bowman,Roger J. Cappallo,Brian E. Corey,Avinash A. Deshpande,David Emrich,Aaron Ewall-Wice,Bryan Gaensler,Bryan Gaensler,Robert F. Goeke,Lincoln J. Greenhill,Bryna J. Hazelton,Luke Hindson,Melanie Johnston-Hollitt,Daniel C. Jacobs,Justin C. Kasper,Justin C. Kasper,Eric Kratzenberg,Emil Lenc,Emil Lenc,Colin J. Lonsdale,Mervyn J. Lynch,Stephen R. McWhirter,Daniel A. Mitchell,Daniel A. Mitchell,Miguel F. Morales,Edward H. Morgan,Nadia Kudryavtseva,Divya Oberoi,Stephen M. Ord,Stephen M. Ord,Bartosz Pindor,Pietro Procopio,Thiagaraj Prabu,J. Riding,D. A. Roshi,N. Udaya Shankar,K. S. Srivani,Ravi Subrahmanyan,Ravi Subrahmanyan,Steven Tingay,Steven Tingay,Mark Waterson,Mark Waterson,Rachel L. Webster,Rachel L. Webster,Alan R. Whitney,Andrew Williams,Christopher L. Williams +64 more
TL;DR: In this article, the authors present a wide-field interferometric imager that uses the w-stacking algorithm and can make use of the W-snapshot algorithm, which is an order of magnitude faster than w-projection, as well as being capable of full-sky imaging at full resolution with correct polarization correction.
Journal ArticleDOI
The GMRT 150 MHz all-sky radio survey - First alternative data release TGSS ADR1
Hubertus Intema,Hubertus Intema,Preshanth Jagannathan,Preshanth Jagannathan,Kunal Mooley,Dale A. Frail +5 more
TL;DR: The first full release of a survey of the 150 MHz radio sky, observed with the giant metrewave radio telescope (GMRT) between April 2010 and March 2012 as part of the TIFR GMRT Sky Survey (TGSS) project is presented in this article.
References
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Astronomical Data Analysis Software and Systems
TL;DR: The ADS abstract service at: http://adswww.harvard.edu has been updated considerably in the last year and new capabilities in the search engine include searching for multi-word phrases and searching for various logical combinations of search terms.
Journal ArticleDOI
HEALPix: A Framework for High-Resolution Discretization and Fast Analysis of Data Distributed on the Sphere
Krzysztof M. Gorski,Krzysztof M. Gorski,E. Hivon,A. J. Banday,Benjamin D. Wandelt,F. K. Hansen,Mstvos Reinecke,Matthia Bartelmann +7 more
TL;DR: This paper considers the requirements and implementation constraints on a framework that simultaneously enables an efficient discretization with associated hierarchical indexation and fast analysis/synthesis of functions defined on the sphere and demonstrates how these are explicitly satisfied by HEALPix.
Journal ArticleDOI
HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
Krzysztof M. Gorski,E. Hivon,A. J. Banday,Benjamin D. Wandelt,F. K. Hansen,Martin Reinecke,M. Bartelman +6 more
TL;DR: The Hierarchical Equal Area iso-Latitude Pixelization (HEALPix) as discussed by the authors is a data structure with an associated library of computational algorithms and visualization software that supports fast scientific applications executable directly on very large volumes of astronomical data and large area surveys in the form of discretized spherical maps.
Book
Interferometry and Synthesis in Radio Astronomy
TL;DR: In this paper, a theory of interferometry and synthesis imaging analysis of the Interferometer Response Geometric Relationships and Polarimetry Antennas and Arrays Response of the receiving system Design of the Analog Receiving System Digital Signal Processing Very-Long-Baseline Interferometry Calibration and Fourier Transformation of Visibility Data Deconvolution, Adaptive Calibrration, and Applications Interferometers Techniques for Astrometry and Geodesy Propagation Effects Van Cittert-Zernike Theorem, Spatial Coherence, and
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