Observing the Sun with the Murchison Widefield Array

D Oberoi, R. Sharma, S. Bhatnagar, C J Lonsdale, L. D. Matthews, I H Cairns, S J Tingay, L Benkevitch, A. Donea, S. M. White, G Bernardi, J. D. Bowman, F Briggs, R J Cappallo, B E Corey, A Deshpande, D Emrich, B M Gaensler, R Goeke, L J GreenhillBryna J Hazelton, Melanie Johnston-Hollitt, David L Kaplan, Justin C Kasper, Eric Kratzenberg, M. J. Lynch, Stephen Russell McWhirter, D. A. Mitchell, Miguel F Morales, E. Morgan, Andre R Offringa, Stephen M Ord, Thiagaraj Prabu, A E E Rogers, Anish Roshi, Joseph E Salah, N. Udaya Shankar, K S Srivani, Ravi Subrahmanyan, Mark F Waterson, Randall B Wayth, R. L. Webster, Alan R Whitney, A. William, C. L. Williams

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

1 Citation (Scopus)

Abstract

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 angular scales and the emission mechanisms involved, span a wide range in brightness temperatures. In addition, time and frequency synthesis, the key tool used by most radio interferometers to build up information about the source being imaged is not effective for solar imaging, because many of the features of interest are short lived and change dramatically over small fractional bandwidths. Building on the advances in radio frequency technology, digital signal processing and computing, the kind of instruments needed to simultaneously capture the evolution of solar emission in time, frequency, morphology and polarization over a large spectral span with the requisite imaging fidelity, and time and frequency resolution have only recently begun to appear. Of this class of instruments, the Murchison Widefield Array (MWA) is best suited for solar observations. The MWA has now entered a routine observing phase and here we present some early examples from MWA observations.

Original languageEnglish
Title of host publicationGeneral Assembly and Scientific Symposium (URSI GASS), 2014 31st URSI
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages4
ISBN (Electronic)9781467352253
DOIs
Publication statusPublished - 17 Oct 2014
Event31st General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2014 - Beijing, China
Duration: 16 Aug 201423 Aug 2014

Conference

Conference31st General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2014
CountryChina
CityBeijing
Period16/08/1423/08/14

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