The Murchison Widefield Array: Design Overview (2009)
Lonsdale, Colin J., Cappallo, Roger J., Morales, Miguel F., Briggs, Frank H., Benkevitch, Leonid, Bowman, Judd D., ...
The Murchison Widefield Array (MWA) is a dipole-based aperture array synthesis telescope designed to operate in the 80-300 MHz frequency range. It is capable of a wide range of science...
Colin J. Lonsdale, Philip J. Diamond, Harding E. Shli, Carol J. Lonsdale
The parsec-scale OH megamaser emission in the lun]inous IR galaxy Arp 220 has been imaged in detail using a global VLBI array. Four major emission regions are revealed in the 1667 MHz line, each with...
Center for Astrophysics and Space Sciences (2007)
Harding E. Smith, Colin J. Lonsdale, Carol J. Lonsdale
We present here detailed results of an 18 cm VLBI survey of 31 luminous (L FIR> 101 1“25LO), radio-compact (0 ~O!’25) infrared galaxies (LFIRGs). High-resolution VLA maps at 15 and 22GHz are...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, Narayana D. R., ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. R., ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. R., Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Parra, Rodrigo, Conway, John E., Diamond, Philip J., Thrall, Hannah, Lonsdale, Colin J., Lonsdale, Carol J., ...
We report the first detection at multiple radio wavelengths (13, 6 and 3.6 cm) of the compact sources within both nuclei of the Ultra Luminous Infra-Red Galaxy Arp 220. We present the radio spectra...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array--Low Frequency Demonstrator (MWA-LFD) to better understand the widefield, wideband properties of their design...
VLBI images of 49 radio supernovae in Arp 220 (2006)
Lonsdale, Colin J., Diamond, Philip J., Thrall, Hannah, Smith, Harding E., Lonsdale, Carol J.
We have used a very long baseline interferometry (VLBI) array at 18 cm wavelength to image the nucleus of the luminous IR galaxy Arp 220 at ∼1 pc linear resolution, with very high sensitivity. The...
VLBI Images of 49 Radio Supernovae in Arp 220 (2006)
Lonsdale, Colin J., Diamond, Philip J., Thrall, Hannah, Smith, Harding E., Lonsdale, Carol J.
We have used a Very Long Baseline Interferometry (VLBI) array at 18cm wavelength to image the nucleus of the luminous IR galaxy Arp 220 at ~1 pc linear resolution, and with very high sensitivity. The...
Salah, Joseph E., Oberoi, Divya, Lonsdale, Colin J., Cappallo, Roger C.
The purpose of the study was to investigate developments that would enhance the capabilities of the Mileura Widefield Array-Low Frequency Demonstrator (MWA-LFD) for solar and space weather...
The Starburst-AGN Connection: A Sensitive VLBI Survey of Luminous IRAS Galaxies (2004)
Lonsdale, Colin J., Smith, Harding E., Lonsdale, Carol J.
Results of an 18 cm VLBI survey of 31 luminous (L_(fir) greater than 10^(11.25)L dot circle),radio-compact (theta less than approximately 0."25) infrared galaxies are presented. Over half thesample...
Symmetric Parsec-scale OH Megamaser Structure in Arp 220 (2004)
Lonsdale, Carol J., Lonsdale, Colin J.
The parsec-scale OH megamaser emission in the luminous IR galaxy Arp 220 has been imaged in detail using a global VLBI array. Four major emission regions are revealed in the 1667 MHz line, each with...
Symmetric Parsec-scale OH Megamaser Structures in Arp 220 (2004)
Lonsdale, Carol J., Lonsdale, Colin J.
The parsec-scale OH megamaser emission in the luminous IR galaxy Arp 200 has been imaged in detail using global VLBI array. Four major emission regions are revelaed inthe 1667 MHz line, each with...
Using VLBI to Probe the Orion-KL Outflow on AU Scales (2004)
Doeleman, Sheperd S., Lonsdale, Colin J., Kondratko, Paul T., Predmore, C. Read
We present the first contemporaneous 43GHz and 86GHz VLBI images of the v=1 J=2-1 and J=1-0 SiO masers in the Orion-KL nebula. Both maser species exhibit the same general morphology of earlier J=1-0...
VLBI Imaging of Luminous Infrared Galaxies: AGN Cores in Mrk231, UGC 5101 & NGC 7469 (2003)
Lonsdale, Carol J., Lonsdale, Colin J., Smith, Harding E., Diamond, Philip J.
We report 18cm VLBI continuum imaging observations at 5 mas resolution for UGC 5101, NGC 7469, and Mrk 231, all part of a sample of Luminous Infrared Galaxies which have been shown to have strong...
Continuum and spectral line observations of the OH Megamaser galaxy Arp 220 (2003)
Rovilos, Emmanouel, Diamond, Philip J., Lonsdale, Colin J., Lonsdale, Carol J., Smith, Harding E.
We present MERLIN observations of the continuum (both 1.6 and 5 GHz) and OH maser emission towards Arp220. the correct spatial configuration of the various componnents of the galaxy is revealed. In...
Radio imaging of core-dominated high redshift quasars (1999)
Barthel, Peter D., Vestergaard, Marianne, Lonsdale, Colin J.
VLA imaging at kiloparsec-scale resolution of sixteen core-dominated radio-loud QSOs is presented. Many objects appear to display variable radio emission and their radio morphologies are...