In 12 MHD simulations spanning bipolar and quadrupolar configurations, the helicity ratio H_j/H_r reaches a consistent threshold of 0.38 ± 0.04 at eruption onset.
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Sympathetic filament and active-region eruptions produced two overlapping CMEs whose interaction compressed southward magnetic fields, driving a major geomagnetic storm with Dst ~ -333 nT.
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An investigation of magnetic energy and helicity thresholds at the onset of solar eruptions based on numerical simulations
In 12 MHD simulations spanning bipolar and quadrupolar configurations, the helicity ratio H_j/H_r reaches a consistent threshold of 0.38 ± 0.04 at eruption onset.
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A Major Geomagnetic Storm in 2024 October Linked to Sympathetic CME--Prominence Eruptions
Sympathetic filament and active-region eruptions produced two overlapping CMEs whose interaction compressed southward magnetic fields, driving a major geomagnetic storm with Dst ~ -333 nT.