Following the evolution of coronal mass ejections using multiple viewpoints
Abstract
Coronal mass ejections (CMEs) are large-scale eruptions of magnetic fields and plasma from the Sun that propagate throughout the heliosphere. Knowledge of how CMEs evolve during their journey in interplanetary space is of paramount importance for understanding fundamental questions concerning CME physics and for predicting in a reliable way their space weather effects at Earth and other planets. Despite the amount of past and present spacecraft scattered across the heliosphere, the number of events where one or more CMEs have been well-observed in solar and heliospheric imagery and then measured in situ at multiple locations over different radial distances is still exiguous. Stereoscopic remote-sensing observations allow better-constrained reconstructions of the 3D structure of CMEs, whilst multipoint in-situ measurements allow validation of CME propagation models and analysis of the local structure of CMEs through different 1D trajectories. In this framework, recent advances in multipoint CME studies will be briefly reviewed and then applied to selected case studies.
- Publication:
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43rd COSPAR Scientific Assembly. Held 28 January - 4 February
- Pub Date:
- January 2021
- Bibcode:
- 2021cosp...43E1025P