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arXiv · 2508.17633

Rotational Effects on Neutrino Emission in Core-collapse Supernovae

Michael A. Pajkos·Siddharth Boyeneni·Oliver Eggenberger Andersen
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Abstract

All stars rotate. While magnetic braking slows massive stars, the effect a stellar companion has on stellar rotation is still being explored. To prepare for future observations from rotating core-collapse supernovae (CCSNe), we analyze a set of 30 2D neutrino radiation-hydrodynamic CCSN simulations for a variety of compactness values, rotation rates, and equations of state. We systematically explore how rotation lowers expected neutrino counts and energies for a realistic detector, while accounting for adiabatic Mikheyev-Smirnov-Wolfenstein matter effects. We quantify the effect of viewing angle for neutrino emission for multiple rotation rates. Using 'multimessenger synthesis', we develop a technique that correlates multimessengers to constrain the neutrino mass ordering for a future supernova event. Likewise, we develop a method to constrain the distance to a rotating or nonrotating CCSN, regardless of explosion outcome.

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Michael A. Pajkos, Siddharth Boyeneni, Oliver Eggenberger Andersen. 2025-08-25. Rotational Effects on Neutrino Emission in Core-collapse Supernovae. https://doi.org/10.1103/wrnn-y4jg

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