385 citations · 555 across the 10 of their papers we have counts for
11 papers
Unsupervised generation of high dynamic range solar images: A novel algorithm for self-calibration of interferometry data
Surajit Mondal, Atul Mohan, Divya Oberoi +5
Solar radio emission, especially at metre-wavelengths, is well known to vary over small spectral (100\,kHz) and temporal (\,s) spans. It is comparatively recently, wi…
Solar Imaging using Low Frequency Arrays
C. Lonsdale, L. Benkevitch, I. Cairns +8
Low frequency imaging radio arrays such as MWA, LWA and LOFAR have been recently commissioned, and significantly more advanced and flexible arrays are planned for the near term. Th…
Reconstruction of Static Black Hole Images Using Simple Geometric Forms
Leonid Benkevitch, Kazunori Akiyama, Rusen Lu +2
General Relativity predicts that the emission close to a black hole must be lensed by its strong gravitational field, illuminating the last photon orbit. This results in a dark cir…
Van Vleck correction generalization for complex correlators with multilevel quantization
L. V. Benkevitch, A. E. E. Rogers, C. J. Lonsdale +4
Remote sensing with phased antenna arrays is based on measurement of the cross-correlations between the signals from each antenna pair. Digital correlators have systematic errors d…
Observing the Sun with the Murchison Widefield Array
D. Oberoi, R. Sharma, S. Bhatnagar +42
The Sun has remained a difficult source to image for radio telescopes, especially at the low radio frequencies. Its morphologically complex emission features span a large range of…
A Method for Smooth Merging of Electron Density Distributions at the Chromosphere-Corona Boundary
Leonid Benkevitch, Divya Oberoi
The electron number density N_e distributions in solar chromosphere and corona are usually described with models of different nature: exponential for the former and inverse power l…
First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype
Divya Oberoi, Lynn D. Matthews, Iver H. Cairns +67
We present the first spectroscopic images of solar radio transients from the prototype for the Murchison Widefield Array (MWA), observed on 2010 March 27. Our observations span the…
Interferometric imaging with the 32 element Murchison Wide-field Array
S. M. Ord, D. A. Mitchell, R. B. Wayth +56
The Murchison Wide-field Array (MWA) is a low frequency radio telescope, currently under construction, intended to search for the spectral signature of the epoch of re-ionisation (…
The Murchison Widefield Array
Daniel A. Mitchell, Lincoln J. Greenhill, Stephen M. Ord +57
It is shown that the excellent Murchison Radio-astronomy Observatory site allows the Murchison Widefield Array to employ a simple RFI blanking scheme and still calibrate visibiliti…
Algorithm for Tracing Radio Rays in Solar Corona and Chromosphere
Leonid Benkevitch, Igor Sokolov, Divya Oberoi +1
In this paper a new efficient algorithm for computation of radio wave ray trajectories is described. The algorithm is based on an original second-order difference scheme with a spe…
The Murchison Widefield Array: Design Overview
Colin J. Lonsdale, Roger J. Cappallo, Miguel F. Morales +45
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 sci…