Violent eruptions on the Sun lead to severe conditions in space that may damage the satellite operations as well as the communication and navigation system on Earth. One of such eruptions is known as the coronal mass ejection which is a huge expulsion of plasma and magnetic field from the Sun. During their journey from Sun to Earth, a sheath region is formed ahead of the coronal mass ejections which can lead to severe magnetic storms at near-Earth space. Therefore, it is important to understand the formation and evolution of such sheath regions in order to predict their space weather impact in advance. Based on the remote observations of the solar atmosphere from different ground-based and space-based telescopes, an advanced computer-based model tool will be developed at the University of Helsinki to study the sheath regions. This model tool will be a stepping stone towards building a reliable space weather forecasting tool.

2022

2025