ARKA Solar Observatory: Concept and Scientific Tasks

This paper presents an updated concept for the ARKA solar observatory, designed for fundamental research into solar physics and space weather forecasting. The project is envisioned as a ground–space complex, comprising a space observatory deployed near the L1 point of the Sun–Earth system and a ground-based long-wavelength radio telescope for observing interplanetary scintillations and tracking the propagation of coronal mass ejections. This unique approach, which combines high-angular-resolution space observations of the solar atmosphere with ground-based radio observations and measurements of solar wind parameters, will enable the study of solar activity mechanisms and improve the accuracy and lead time of forecasting geoeffective events.