The using of large ground-based low frequency radio telescopes for outer solar corona diagnostics

Details The using of large ground-based low frequency radio telescopes for outer solar corona diagnostics The using of large ground-based low frequency radio telescopes for outer solar corona diagnostics

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja....14130k&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #14130

Computer Science

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Scientific paper

The interplanetary scintillations method is well developed at meter- decimeter wavelength for solar wind study. Potentially the decameter range can be convenient for implementing this method at large elongations, i.e. for studying the outer corona. During last years this method was evaluated by using largest decameter antennas UTR-2 and Nancay Decameter Array at new quantity and quality levels. New methods were implemented , for example, by using high performance backends like wideband digital spectral processors, which allow sensitive observations even in case of strong interferences often encountered at decameter wavelengths. The theory of IPS is developed taking in to account Feynman path integral method and volume scattering. The separation of interplanetary and ionosphere scintillations can be achieved by comparing their scintillations spectra as well as from the analysis of dynamic spectra at appropriate time-frequency scales. This study demonstrates that using large radio telescopes and high efficiency backends gives access to a few tenth of radio sources. This low frequency radio astronomy fields can contribute to the scientific program of any future new generation giant low frequency radio telescopes.

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