Physics
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....7841b&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #7841
Physics
Scientific paper
Low frequency radio observations of the Sun - defined here to be those that comprise roughly decimeter to decameter wavelengths - offer a rich phenomenology and a number of important diagnostics of physical processes in the solar corona and the heliosphere. Of particular interest are active solar phenomena such as flares and drivers of space weather: coronal mass ejections and fast solar solar wind streams. This talk will briefly review the relevant emission mechanisms at these wavelengths and present a number of examples of recent low-frequency observations, including: 1) radio tracers of energy release in the solar corona; 2) radio precursor activity of coronal mass ejections; 3) radio signatures of coronal mass ejections; 4) radio diagnostics of the solar wind, disturbances in the solar wind, and turbulence in the solar wind. These observations motivate the need for the next generation of radio imaging instrumentation, the Low Frequency Array (LOFAR) and the Frequency Agile Solar Radiotelescope (FASR). LOFAR is a general purpose instrument designed to operate between 15-240 MHz. A key component of its science program is solar radiophysics. FASR is a solar-dedicated instrument designed to perform broadband imaging spectroscopy between ~100 MHz and 30 GHz. These two instruments are therefore complementary in their frequency coverage and will together address an outstanding science program.
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