Evolution of the critical torus instability height and coronal mass ejection likelihood in solar active regions

@article{James2022EvolutionOT,
  title={Evolution of the critical torus instability height and coronal mass ejection likelihood in solar active regions},
  author={Alexander W. James and D.R.A. Williams and Jennifer O’Kane},
  journal={Astronomy \& Astrophysics},
  year={2022}
}
Aims. Working towards improved space weather predictions, we aim to quantify how the critical height at which the torus instability drives coronal mass ejections (CMEs) varies over time in a sample of solar active regions. Methods. We model the coronal magnetic fields of 42 active regions and quantify the critical height at their central polarity inversion lines throughout their observed lifetimes. We then compare these heights to the changing magnetic flux at the photospheric boundary and… 

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