Coronal shocks associated with CMEs and flares and their space weather consequences

TL;DR

This study investigates how complex solar events involving coronal shocks, CMEs, and flares influence space weather by analyzing radio bursts, solar flares, CMEs, and their effects on Earth's geomagnetic activity.

Contribution

It provides a detailed analysis of the relationship between coronal shocks, CMEs, flares, and their space weather consequences, using multi-instrument observational data.

Findings

Coronal shocks, CMEs, and flares are linked to changes in geomagnetic activity.

Radio bursts correlate with solar wind parameter variations.

Complex events have significant space weather impacts.

Abstract

We study the geoeffectiveness of a sample of complex events; each includes a coronal type II burst, accompanied by a GOES SXR flare and LASCO CME. The radio bursts were recorded by the ARTEMIS-IV radio spectrograph, in the 100-650 MHz range; the GOES SXR flares and SOHO/LASCO CMEs, were obtained from the Solar Geophysical Data (SGD) and the LASCO catalogue respectively. These are compared with changes of solar wind parameters and geomagnetic indices in order to establish a relationship between solar energetic events and their effects on geomagnetic activity.