L
Lawrence Toomey
Researcher at Commonwealth Scientific and Industrial Research Organisation
Publications - 12
Citations - 659
Lawrence Toomey is an academic researcher from Commonwealth Scientific and Industrial Research Organisation. The author has contributed to research in topics: Radio telescope & Pulsar timing array. The author has an hindex of 7, co-authored 12 publications receiving 475 citations.
Papers
More filters
Journal ArticleDOI
An all-sky search for continuous gravitational waves in the Parkes Pulsar Timing Array data set
Xing-Jiang Zhu,Xing-Jiang Zhu,George Hobbs,Linqing Wen,William A. Coles,Jing Wang,Jing Wang,Ryan Shannon,Richard N. Manchester,Matthew Bailes,N. D. R. Bhat,Sarah Burke-Spolaor,Shi Dai,Shi Dai,Michael Keith,Matthew Kerr,Yuri Levin,Dustin R. Madison,Stefan Oslowski,Stefan Oslowski,Vikram Ravi,Vikram Ravi,Lawrence Toomey,W. van Straten +23 more
TL;DR: The Parkes Pulsar Timing Array (PPTA) Data Release 1 data set for continuous gravitational waves (GWs) in the frequency range from 5 × 10(-9) to 2 x 10(-7) Hz is presented in this article.
Journal ArticleDOI
An ultra-wide bandwidth (704 to 4 032 MHz) receiver for the Parkes radio telescope
George Hobbs,Richard N. Manchester,A. Dunning,Andrew Jameson,Paul Roberts,D. George,J. A. Green,J. Tuthill,Lawrence Toomey,Jane F. Kaczmarek,Stacy Mader,M. Marquarding,Azeem Ahmed,S.W. Amy,Matthew Bailes,Ron Beresford,N. D. R. Bhat,Douglas C.-J. Bock,M. Bourne,M. Bowen,Andrew Cameron,Ettore Carretti,Nick Carter,Santy Castillo,R. Chekkala,W. Cheng,Yoon S. Chung,Daniel A. Craig,Shi Dai,Joanne Dawson,James Dempsey,Paul Doherty,Bin Dong,Philip G. Edwards,Tuohutinuer Ergesh,Xu-Yang Gao,Jin-Lin Han,Douglas B. Hayman,Balthasar T. Indermuehle,K. Jeganathan,Simon Johnston,Henry Kanoniuk,M. J. Kesteven,Michael Kramer,M. Leach,Vince McIntyre,Vanessa A. Moss,Vanessa A. Moss,Vanessa A. Moss,Stefan Oslowski,Chris Phillips,Nathan Pope,B. Preisig,Danny C. Price,Ken Reeves,Les Reilly,John Reynolds,Timothy Robishaw,Peter Roush,Tim Ruckley,Elaine M. Sadler,John Sarkissian,Sean Severs,Ryan Shannon,Ken W. Smart,Malcolm B. Smith,Stephanie Smith,Charlotte Sobey,Lister Staveley-Smith,Anastasios Tzioumis,Willem van Straten,Nina Wang,Linqing Wen,Matthew Whiting +73 more
TL;DR: In this paper, the authors describe an ultra-widebandwidth, low-frequency receiver recently installed on the Parkes radio telescope, which provides continuous frequency coverage from 704 to 4032 MHz.
Journal ArticleDOI
The Parkes Pulsar Timing Array project: Second data release
Matthew Kerr,Daniel J. Reardon,George Hobbs,Ryan Shannon,Richard N. Manchester,Shi Dai,Christopher J. Russell,Songbo Zhang,Willem van Straten,Stefan Oslowski,Aditya Parthasarathy,Renée Spiewak,Matthew Bailes,N. D. Ramesh Bhat,Andrew Cameron,William A. Coles,James Dempsey,Xinping Deng,B. Goncharov,Jane F. Kaczmarek,Michael Keith,Paul D. Lasky,Marcus E. Lower,B. Preisig,John Sarkissian,Lawrence Toomey,Hong-Guang Wang,Jingbo Wang,Lei Zhang,Xing-Jiang Zhu +29 more
TL;DR: 14 yr of public data from the Parkes Pulsar Timing Array is described, an ongoing project that is producing precise measurements of pulse times of arrival from 26 millisecond pulsars using the 64-m Parkes radio telescope with a cadence of approximately 3 weeks in three observing bands.
Journal ArticleDOI
Parkes Pulsar Timing Array constraints on ultralight scalar-field dark matter
N.K. Porayko,Xing-Jiang Zhu,Y. Levin,L. Hui,George Hobbs,A. Grudskaya,Konstantin Postnov,Matthew Bailes,Ramesh Bhat,William A. Coles,Shi Dai,James Dempsey,Michael Keith,Matthew Kerr,Michael Kramer,Paul D. Lasky,Richard N. Manchester,Stefan Oslowski,Aditya Parthasarathy,Vilupanur A. Ravi,Daniel J. Reardon,Pablo Rosado,Christopher J. Russell,Ryan Shannon,Renée Spiewak,W. van Straten,Lawrence Toomey,Jingbo Wang,Linqing Wen,X. P. You +29 more
TL;DR: The Parkes Pulsar Timing Array (PPTA) has been monitoring 20 millisecond pulsars at two-to-three-week intervals for more than a decade.
Journal ArticleDOI
The Parkes Pulsar Timing Array Project: Second data release
Matthew Kerr,Daniel J. Reardon,George Hobbs,Ryan Shannon,R. N. Manchester,Shi Dai,Christopher J. Russell,Songbo Zhang,W. van Straten,Stefan Oslowski,Aditya Parthasarathy,Renée Spiewak,Matthew Bailes,N. D. R. Bhat,A. D. Cameron,William A. Coles,James Dempsey,Xinping Deng,B. Goncharov,Jane F. Kaczmarek,Michael Keith,Paul D. Lasky,Marcus E. Lower,B. Preisig,John Sarkissian,Lawrence Toomey,Haomiao Wang,Jingbo Wang,Linhao Zhang,Xing-Jiang Zhu +29 more
TL;DR: The Parkes Pulsar Timing Array (PPTA) as mentioned in this paper is an ongoing project that is producing precise measurements of pulse times of arrival from 26 millisecond pulsars using the 64m Parkes radio telescope with a cadence of approximately three weeks in three observing bands.