Abstract

The Francohellenic Solar Radiospectrograph (ARTEMIS-IV) run by the University of Athens and ATEI Lamias is in operation at the Thermopylae Satellite Communication Station since 1996. The observations extend from the base of the Solar Corona (650 MHz) to about 2 Solar Radii (20 MHz) with time resolution 1/10 and 1/100 sec. The instruments recordings, being in the form of dynamic spectra, measure radio flux as a function of height in the corona; our observations are combined with spatial data from the STEREO A and B ans WIND WAVES experiments, Nancay Radioheliograph whenever the need for 3D positional information arises.

The ARTEMIS-IV contribution in the study of solar radio bursts is two fold- Firstly, in investigating new spectral characteristics since its high sampling rate facilitates the study of fine structures in radio events. On the other hand it is used in studying the association of solar bursts with interplanetary phenomena because of its extended frequency range which is, furthermore, complementary to the range of the WIND/WAVES receivers and the observations may be readily combined. The case of a lunar based instrument will be discussed.

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