Learn More
Spread over an area in Western Australia, this telescope is being designed to study the sun and its inner heliosphere, and time-varying astronomical phenomena. ABSTRACT | The Murchison Widefield Array 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(More)
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. 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(More)
The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters. a high throughput real time data pipeline for a large radio telescope array with GPUs. Abstract The Murchison Widefield Array (MWA) is a next-generation radio telescope currently under construction in the remote Western Australia(More)
The interferometric technique known as peeling addresses many of the challenges faced when observing with low-frequency radio arrays, and is a promising tool for the associated calibration systems. We investigate a real-time peeling implementation for next-generation radio interferometers such as the Murchison widefield array (MWA). The MWA is being built(More)
The Murchison Widefield Array (MWA) is a Square Kilometre Array (SKA) Precursor. The telescope is located at the Murchison Radio–astronomy Observatory (MRO) in Western Australia (WA). The MWA consists of 4096 dipoles arranged into 128 dual polarisation aperture arrays forming a connected element interferometer that cross-correlates signals from all 256(More)
Modern graphics processing units (GPUs) are inexpensive commodity hardware that offer Tflop/s theoretical computing capacity. GPUs are well suited to many compute-intensive tasks including digital signal processing. We describe the implementation and performance of a GPU-based digital correlator for radio astronomy. The correlator is implemented using the(More)
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 and to characterize the radio frequency interference (RFI) between 80 and 300 MHz at the site in Western Australia. Observations acquired during the six month(More)
We present the first results from the V-FASTR experiment, a commensal search for fast transient radio bursts using the Very Long Baseline Array (VLBA). V-FASTR is unique in that the widely spaced VLBA antennas provide a discrim-inant against non-astronomical signals and a mechanism for the localization and identification of events that is not possible with(More)
The MWA is a next-generation radio interferometer under construction in remote Western Australia. The data rate from the correlator makes storing the raw data infeasible, so the data must be processed in real-time. The processing task is of order 10 TFLOPs −1. The remote location of the MWA limits the power that can be allocated to computing. We describe(More)