THE RELATIONSHIP BETWEEN FINE-STRUCTURE OF THE SOLAR RADIO-EMISSION AT METER WAVELENGTHS AND CORONAL TRANSIENTS

Features in the fine structure of type II+IV solar radio bursts that a re directly related to coronal mass ejections (CMEs) are identified. E ighteen events with radio fine structure were selected for the analysi s; in all cases, it was possible to reliably identify the event with s ome specific flare, and information about associated CMEs was availabl e (from the SMM and R78-1 spacecraft). Unusual, slowly drifting fibers directly related to CMEs were observed in type-II bursts or in the fl are continuum FCII at the impulsive stage. Sometimes braids of fibers were found to be accompanied by such unusual fibers in absorption and by wide-band millisecond pulsations in the post-maximum phase. In some events, zebra structure was observed at unusually low frequencies (to 45 MHz). Models for the radio emission of these unusual fibers that a re consistent with the known properties of CMEs are examined in the fr amework of mechanisms for electrostatic wave instabilities and whistle rs.