Lattice simulations show that Schwinger currents saturate gauge-field production in axion inflation, yielding universal conductivity and magnetic-field values at the onset of strong backreaction.
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A new global instability of toroidal magnetic fields in stars is reported that grows on the Alfvén time, is less dissipation-sensitive than the Tayler instability, and may affect angular momentum transport.
Finite conductivity of the plasma suppresses parametric resonance amplification of electromagnetic fields from ultralight pseudoscalar dark matter, making it impossible to generate magnetic fields of sufficient strength in cosmic voids for observationally viable couplings.
TMF simulation of AR 12975 reproduces filament channel formation and energy/helicity injection but shows eruption helicity ratio of 0.23 and torus instability at 0.32 due to complex field configuration.
citing papers explorer
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Schwinger effect in axion inflation on a lattice
Lattice simulations show that Schwinger currents saturate gauge-field production in axion inflation, yielding universal conductivity and magnetic-field values at the onset of strong backreaction.
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Beyond the Tayler instability: A new global instability of toroidal magnetic fields in stars
A new global instability of toroidal magnetic fields in stars is reported that grows on the Alfvén time, is less dissipation-sensitive than the Tayler instability, and may affect angular momentum transport.
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Suppressed Magnetogenesis from Ultralight Dark Matter due to Finite Conductivity
Finite conductivity of the plasma suppresses parametric resonance amplification of electromagnetic fields from ultralight pseudoscalar dark matter, making it impossible to generate magnetic fields of sufficient strength in cosmic voids for observationally viable couplings.
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Formation and Eruption of Filament Channel in Solar Active Region 12975: Insights from Observations and Simulations of Magnetic Field Evolution
TMF simulation of AR 12975 reproduces filament channel formation and energy/helicity injection but shows eruption helicity ratio of 0.23 and torus instability at 0.32 due to complex field configuration.