Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsh33c..01k&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SH33C-01
Physics
6900 Radio Science, 7524 Magnetic Fields, 7534 Radio Emissions, 7847 Radiation Processes, 7851 Shock Waves (4455)
Scientific paper
Energy flow in magnetized heliospheric plasmas from the deep corona to the remote heliosheath generates intense thermal and non-thermal radio emission. The spectral, temporal, and spatial evolution of this radiation encodes information related to the characteristics of the local emitting plasma, making radio observations a powerful technique for remotely characterizing energetic processes and environments. Advances in signal processing and information technology permit the design of advanced ground and space-based radio observatories that will lead to a renaissance in radiophysics. In particular, I will discuss two big questions future radio instrumentation can help us answer through direct measurements. What is the evolution of the plasma density and magnetic field from the corona to interplanetary space, during quiet and active times? What is the nature of particle acceleration and transport at shocks and magnetic reconnection events? In this talk, I will present future instrumentation, both ground and space-based, that will answer these questions. For ground-based arrays, I will focus on the Mileura Wide-Field Array (MWA), the Long Wavelength Array (LWA), the Low Frequency Array (LOFAR), and the Frequency Agile Solar Radiotelescope (FASR). Each of these arrays will contribute through unique advances in ionospheric calibration, field of view, and spectral, temporal, and spatial resolution. For frequencies below several MHz, the ionosphere is opaque and observations must be conducted from space. I will discuss the capabilities of the STEREO spacecraft and the potential for future space- and lunar-based radio interferometry with the Solar Imaging Radio Array (SIRA) and the Lunar Interferometric Radio Array (LIRA).
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