Heliospheric Measurements with the Planned Mileura Widefield Array

Details Heliospheric Measurements with the Planned Mileura Widefield Array Heliospheric Measurements with the Planned Mileura Widefield Array

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsh33c..03s&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH33C-03

Physics

7524 Magnetic Fields, 7534 Radio Emissions, 2101 Coronal Mass Ejections (7513), 2134 Interplanetary Magnetic Fields, 2194 Instruments And Techniques

Scientific paper

The Mileura Widefield Array (MWA) is a radio array designed for operation in the 80-300 MHz frequency range. The array, a joint US-Australia project, is planned for deployment in a radio-quiet area in Western Australia. The array consists of 8000 dual-polarization dipoles, clustered in sub-arrays that are spread over a 1.5 km diameter and connected to a central digital signal processor. Its characteristics include a field of view of about 1000 deg2, an effective collecting area of 8000 m2 at 200 MHz with 32 MHz instantaneous bandwidth, and 16 simultaneous beams. The techniques to be exploited for heliospheric measurements with the MWA include interplanetary scintillations, Faraday rotation using polarized radio sources, and solar radio burst imaging. This paper will describe the application of these techniques and their expected results from the MWA, with primary emphasis on the potential of determining the magnetic field characteristics of the heliosphere and coronal mass ejections. Initial solar results from the deployment of prototype instrumentation in Western Australia during the past year will be described. Design and research for the MWA at MIT have been supported by NSF and AFOSR.

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