November 13, 2025The Astrophysical JournalOpen Access

Heavy Element Nucleosynthesis in Rotating Protomagnetar Winds

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A robust r-process associated with magnetar winds produces heavy elements effectively, achieving significant nucleosynthesis.
Magnetohydrodynamic simulations reveal neutron-rich material ejected from the equatorial zone of the protoneutron star.
The analysis estimates that magnetized PNS winds could account for up to 100% of the Galactic r-process inventory.
Overproduction of elements with mass number A ≤ 120 occurs alongside robust r-process activity in these winds.

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Magnetar winds demonstrate robust nucleosynthesis of heavy elements, suggesting possible galactic r-process origins.

Prasanna et al. (2025) studied this question.

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