Ten Years of the Solar Radiospectrograph ARTEMIS-IV

TL;DR

The ARTEMIS-IV solar radiospectrograph has operated for over ten years, providing high-resolution dynamic spectra from the solar corona, aiding in the study of solar radio bursts and their relation to interplanetary phenomena.

Contribution

This paper reviews a decade of ARTEMIS-IV's operation, highlighting its high sampling rate and extended frequency range for solar radio burst analysis.

Findings

Enhanced understanding of fine structures in solar radio bursts.

Improved correlation between solar radio emissions and interplanetary phenomena.

Potential for future joint observations with other radio instruments.

Abstract

The Solar Radiospectrograph of the University of Athens (ARTEMIS-IV) 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 1/10-1/100 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 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. This reports serves as a brief account of this operation. Joint observations with STEREO/WAVES and LOFAR low frequency receivers are envisaged in the future.