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Galaxy Tomography with the Gravitational Wave Background from Supermassive Black Hole Binaries

Chen Y.
europepmc   +1 more source

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Low-frequency radio astronomy engineering in Western Australia

2017 IEEE Radio and Antenna Days of the Indian Ocean (RADIO), 2017
I will discuss low-frequency radio astronomy engineering efforts underway in Western Australia. We carry out this work through the International Centre for Radio Astronomy Research (ICRAR)/Curtin University. The frequency range of interest is ∼50 to ∼350 MHz, which is the Low-Frequency Square Kilometre Array (SKA-Low) frequency band.
Adrian Sutinjo
exaly   +3 more sources

Receiver System Design for Low Frequency Radio Astronomy Applications

2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC), 2018
Over the past two decades we have seen an emergence of low frequency (sub 500MHz) radio interferometers which fit the description of Large N arrays including the proposed Square Kilometre Array (SKA) [1] and the Hydrogen Epoch of Reionization Array (HERA) [2] telescopes.
Nima Razavi-Ghods
exaly   +3 more sources

Calibration challenges for low frequency radio astronomy

2011 XXXth URSI General Assembly and Scientific Symposium, 2011
A major challenge for all high resolution low frequency radio astronomy is measuring and removing the effects of the ionosphere. The isoplanatic patch size for frequencies below a few hundred MHz is generally much smaller than the field of view. In addition, aperture arrays have beams on the sky which vary dramatically with observing geometry.
exaly   +2 more sources

Introduction to Low Frequency Radio Astronomy

2018
Radio astronomy began at low (ν ≪ 300 MHz) frequencies, but until recently has traditionally been dominated by higher frequency work. With the advent of a new generation of low frequency interferometers and the anticipation of the low-frequency component of the Square Kilometre Array (SKA), the field is experiencing a rebirth. This introductory chapter
G. Heald
openaire   +2 more sources

UWB active antenna array for low frequency radio astronomy

2012 6th International Conference on Ultrawideband and Ultrashort Impulse Signals, 2012
The decameter wavelength range is of interest for radio astronomy at the present time. Construction of giant low-frequency radio telescopes has been planned and is being carried out in European Union (Low Frequency Array - LOFAR), USA (Long Wavelength Array - LWA) and in Ukraine (Giant Ukrainian Radio Telescope - GURT).
A. A. Konovalenko, I. S. Falkovich, A. A. Gridin, P. L. Tokarsky, S. N. Yerin   +4 more
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Instrumentation for space-based low frequency radio astronomy

2000
This paper will provide a general overview of the techniques that have been used to measure low frequency radio waves. It will first cover basic antenna systems and problems associated with their implementation on a spacecraft. Then a discussion of receiver types and measurable parameters will follow. Resolution and precision will be addressed.
R. Manning
openaire   +2 more sources

Characterization of a Low-Frequency Radio Astronomy Prototype Array in Western Australia [PDF]

IEEE Transactions on Antennas and Propagation, 2015
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 pseudorandom array of 16 log ...
Adrian Sutinjo, R B Wayth, P J Hall
exaly   +2 more sources