3 papers
astro-ph.SR2026
Parametric Study of the Torus Instability Threshold
Jun Chen, Bernhard Kliem, Tibor Török +1
The torus instability of an arched current channel has been suggested to initiate and drive major solar and stellar eruptions. Its threshold, given by the critical decay index of t…
astro-ph.SR2025
Magnetic Decay Index Profile and Coronal Mass Ejection Speed
Bernhard Kliem, Georgios Chintzoglou, Tibor Török +1
We study the relationship between the speed of coronal mass ejections (CMEs) and the height profile of the ambient magnetic field, quantified by its decay index, n(h). Our sample i…
astro-ph.SR2025
Coronal dimmings and what they tell us about solar and stellar coronal mass ejections
Astrid M. Veronig, Karin Dissauer, Bernhard Kliem +10
Coronal dimmings associated with coronal mass ejections (CME) from the Sun have gained much attention since the late 1990s when they were first observed in high-cadence imagery of…