L
L. deSouza
Researcher at University of Sydney
Publications - 18
Citations - 2000
L. deSouza is an academic researcher from University of Sydney. The author has contributed to research in topics: Murchison Widefield Array & Point spread function. The author has an hindex of 15, co-authored 18 publications receiving 1928 citations. Previous affiliations of L. deSouza include Commonwealth Scientific and Industrial Research Organisation.
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Journal ArticleDOI
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,Tom Booler,Brian Crosse,D. Pallot,Andreas Wicenec,W. Arcus,David G. Barnes,Gianni Bernardi,Frank H. Briggs,S. Burns,John D. Bunton,Roger J. Cappallo,T. Colegate,Brian E. Corey,Avinash A. Deshpande,L. deSouza,Bryan Gaensler,Lincoln J. Greenhill,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,Colin J. Lonsdale,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,S. E. Tremblay,Randall B. Wayth,M. Waterson,Rachel L. Webster,Alan R. Whitney,Andrew Williams,Christopher L. Williams,J. S. B. Wyithe +59 more
TL;DR: The Murchison Widefield Array (MWA) as mentioned in this paper 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.
Journal ArticleDOI
Science with the Murchison Widefield Array
Judd D. Bowman,Iver H. Cairns,David L. Kaplan,Tara Murphy,Divya Oberoi,Lister Staveley-Smith,W. Arcus,David G. Barnes,Gianni Bernardi,Frank H. Briggs,Shea Brown,John D. Bunton,Adam J. Burgasser,Roger J. Cappallo,Shami Chatterjee,Brian E. Corey,Anthea J. Coster,Avinash A. Deshpande,L. deSouza,David Emrich,Philip J. Erickson,Robert F. Goeke,Bryan Gaensler,Lincoln J. Greenhill,Lisa Harvey-Smith,Bryna J. Hazelton,David Herne,Jacqueline N. Hewitt,Melanie Johnston-Hollitt,Justin C. Kasper,B. B. Kincaid,R. Koenig,Eric Kratzenberg,Colin J. Lonsdale,Mervyn J. Lynch,Lynn D. Matthews,S. Russell McWhirter,Daniel A. Mitchell,Miguel F. Morales,Edward H. Morgan,Stephen M. Ord,Joseph Pathikulangara,Thiagaraj Prabu,Ronald A. Remillard,Timothy Robishaw,Alan E. E. Rogers,A. Roshi,Joseph E. Salah,Robert J. Sault,N. Udaya Shankar,K. S. Srivani,J. Stevens,Ravi Subrahmanyan,Steven Tingay,Randall B. Wayth,M. Waterson,Rachel L. Webster,Alan R. Whitney,Andrew Williams,Christopher L. Williams,J. Stuart B. Wyithe +60 more
TL;DR: The Murchison Widefield Array (MWA) as discussed by the authors is the first telescope in the southern hemisphere designed specifically to explore the low-frequency astronomical sky between 80 and 300 MHz with arcminute angular resolution and high survey efficiency.
Journal ArticleDOI
A study of fundamental limitations to statistical detection of redshifted H I from the epoch of reionization
Nithyanandan Thyagarajan,N. Udaya Shankar,Ravi Subrahmanyan,Ravi Subrahmanyan,Ravi Subrahmanyan,W. Arcus,Gianni Bernardi,Judd D. Bowman,Frank H. Briggs,Frank H. Briggs,John D. Bunton,Roger J. Cappallo,Brian E. Corey,L. deSouza,L. deSouza,David Emrich,Bryan Gaensler,Robert F. Goeke,Lincoln J. Greenhill,Bryna J. Hazelton,David Herne,Jacqueline N. Hewitt,Melanie Johnston-Hollitt,David L. Kaplan,Justin C. Kasper,B. B. Kincaid,R. Koenig,Eric Kratzenberg,Colin J. Lonsdale,Mervyn J. Lynch,S. Russell McWhirter,Daniel A. Mitchell,Daniel A. Mitchell,Miguel F. Morales,Edward H. Morgan,Divya Oberoi,Stephen M. Ord,Stephen M. Ord,Joseph Pathikulangara,Ronald A. Remillard,Alan E. E. Rogers,D. Anish Roshi,Joseph E. Salah,Robert J. Sault,K. S. Srivani,Jamie Stevens,Jamie Stevens,Prabu Thiagaraj,Steven Tingay,Steven Tingay,Randall B. Wayth,Randall B. Wayth,Randall B. Wayth,Mark Waterson,Mark Waterson,Rachel L. Webster,Rachel L. Webster,Alan R. Whitney,Andrew Williams,Christopher L. Williams,J. Stuart B. Wyithe,J. Stuart B. Wyithe +61 more
TL;DR: In this paper, the authors explore the relative magnitudes of three fundamental sources of uncertainty, namely, foreground contamination, thermal noise, and sample variance, in detecting the H I power spectrum from the epoch of reionization (EoR).
Journal ArticleDOI
Fast holographic deconvolution: a new technique for precision radio interferometry
Ian Sullivan,Miguel F. Morales,Bryna J. Hazelton,W. Arcus,David G. Barnes,Gianni Bernardi,Frank H. Briggs,Judd D. Bowman,John D. Bunton,Roger J. Cappallo,Brian E. Corey,Avinash A. Deshpande,L. deSouza,L. deSouza,David Emrich,Bryan Gaensler,Robert F. Goeke,Lincoln J. Greenhill,David Herne,Jacqueline N. Hewitt,Melanie Johnston-Hollitt,David L. Kaplan,Justin C. Kasper,B. B. Kincaid,R. Koenig,Eric Kratzenberg,Colin J. Lonsdale,Mervyn J. Lynch,Stephen R. McWhirter,Daniel A. Mitchell,Edward H. Morgan,Divya Oberoi,Stephen M. Ord,Joseph Pathikulangara,Thiagaraj Prabu,Ron Remillard,Alan E. E. Rogers,A. Roshi,Joseph E. Salah,Robert J. Sault,N. Udaya Shankar,K. S. Srivani,Jamie Stevens,Jamie Stevens,Ravi Subrahmanyan,Steven Tingay,Randall B. Wayth,M. Waterson,Rachel L. Webster,Alan R. Whitney,Andrew Williams,Christopher L. Williams,J. S. B. Wyithe +52 more
TL;DR: Fast Holographic Deconvolution as mentioned in this paper is an extension of A-projection/software-holography/forward modeling analysis techniques and shares their precision deconvolution and wide field polarimetry, while being significantly faster than current implementations that use full direction-dependent antenna gains.
Journal ArticleDOI
A 189 MHz, 2400 deg2 Polarization Survey with the Murchison Widefield Array 32-element Prototype
Gianni Bernardi,Lincoln J. Greenhill,Daniel A. Mitchell,Stephen M. Ord,Bryna J. Hazelton,Bryan Gaensler,A. de Oliveira-Costa,Miguel F. Morales,N. Udaya Shankar,Ravi Subrahmanyan,Randall B. Wayth,Emil Lenc,Christopher L. Williams,W. Arcus,B. S. Arora,David G. Barnes,Judd D. Bowman,Frank H. Briggs,John D. Bunton,Roger J. Cappallo,Brian E. Corey,Avinash A. Deshpande,L. deSouza,L. deSouza,David Emrich,Robert F. Goeke,David Herne,Jacqueline N. Hewitt,Melanie Johnston-Hollitt,David L. Kaplan,Justin C. Kasper,B. B. Kincaid,R. Koenig,Eric Kratzenberg,Colin J. Lonsdale,Mervyn J. Lynch,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,K. S. Srivani,Jamie Stevens,Steven Tingay,Mark Waterson,Mark Waterson,Rachel L. Webster,Alan R. Whitney,Andrew Williams,J. S. B. Wyithe +54 more
TL;DR: In this paper, a Stokes I, Q and U survey at 189 MHz with the Murchison Widefield Array 32 element prototype covering 2400 degrees 2 was presented, where the authors demonstrate a novel interferometric data analysis that involves calibration of drift scan data, integration through the co-addition of warped snapshot images, and deconvolution of the point-spread function through forward modeling.