Global Structure of the Turbulent Solar Wind during 24 Solar Activity Maxima from IPS Observations with the Multibeam Radio Telescope BSA LPI at 111 MHz

摘要

We present the results of interplanetary scintillation ( IPS) observations made with the radio telescope of the Big Scanning Array of the Lebedev Physical Institute ( BSA LPI) at a frequency of 111 MHz during 2013. Observations were carried out in the monitoring regime. The modernized BSA LPI radio telescope has a system of 96 beams that allows measuring IPS of about 5000 compact radio sources during 24 hours. We briefly describe the technique of mass measurement data processing that we used. 2D spatial distributions of the IPS level are presented for selected days. The analysis of the 2D IPS level distributions averaged over weekly and monthly periods shows that the global structure of the turbulent solar wind is highly variable, but on average is close to a spherical symmetry during the solar- activity maximum. Evidence is presented of the existence of spiral- like large- scale disturbances in the solar wind inside 1 AU.