Precursors to coronal mass ejections

Space weather causes geomagnetic storms, which can have a major impact of ground-based technology (e.g. power-lines, navigation, communications) and satellites. Space weather is driven by the Sun, which periodically experiences its own storms in the form of solar flares or coronal mass ejections, the occurrence rate of which depends on the phase of the solar cycle. We have developed a technique to estimate the transit time of coronal mass ejections (typically 3 days) so the time of potential impact can be estimated. What is required is development of a method to detect imminent coronal mass ejections before they occur. Coronograph data from the SOHO/STEREO satellites will be used. This project will run in collaboration with an international partner, who may be visited.