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Modelling of the Spectral Energy Distribution of Fornax A: Leptonic and Hadronic Production of High Energy Emission from the Radio Lobes
B. McKinley, R. Yang, M. López-Caniego +52
We present new low-frequency observations of the nearby radio galaxy Fornax A at 154 MHz with the Murchison Widefield Array, microwave flux-density measurements obtained from WMAP…
A GPU-Based Wide-Band Radio Spectrometer
Jayanth Chennamangalam, Simon Scott, Glenn Jones +9
The Graphics Processing Unit (GPU) has become an integral part of astronomical instrumentation, enabling high-performance online data reduction and accelerated online signal proces…
Limits on low frequency radio emission from southern exoplanets with the Murchison Widefield Array
Tara Murphy, Martin E. Bell, David L. Kaplan +39
We present the results of a survey for low frequency radio emission from 17 known exoplanetary systems with the Murchison Widefield Array. This sample includes 13 systems that have…
VLA and GBT Observations of Orion B (NGC 2024, W12) : Photo-dissociation Region Properties and Magnetic field
D. Anish Roshi, W. M. Goss, S. Jeyakumar
We present images of C110 and H110 radio recombination line (RRL) emission at 4.8 GHz and images of H166, C166 and X166 RRL emission at 1.4 GHz, observed toward the…
The low-frequency characteristics of PSR J0437-4715 observed with the Murchison Widefield Array
N. D. Ramesh Bhat, S. M. Ord, S. E. Tremblay +37
We report on the detection of the millisecond pulsar PSR J0437-4715 with the Murchison Widefield Array (MWA) at a frequency of 192 MHz. Our observations show rapid modulations of p…
WSClean: an implementation of a fast, generic wide-field imager for radio astronomy
A. R. Offringa, B. McKinley, N. Hurley-Walker +50
Astronomical widefield imaging of interferometric radio data is computationally expensive, especially for the large data volumes created by modern non-coplanar many-element arrays.…