Year: 2026
Type: article
Abstract: We explore the dependence upon rotation rate alone of various supernova observables simulated to their saturation for the explosion of a 9 M ⊙ progenitor. We find that the explosion energy is nonmonotonic with, and weakly dependent upon, spin across a broad range of initial spins. The asymmetries of the blast depend weakly on spin, with faster spins leading to only slightly greater asymmetries. There is little significant pole–equator neutrino heating asymmetry during explosion, even for rapid rotation, and only for the fastest rotator does the neutrino heating rate diminish noticeably. Hence the effects of rotation alone on all salient aspects of supernova dynamics are not large. We find that the recoil kick and spin are clearly aligned only for the most rapidly rotating model. Interestingly, for the fastest rotator, we witness T /∣ W ∣ corotation instabilities near a value of 0.05 and spiral-arm modes emerge. We find that the nucleosynthetic yields depend little upon the rotation rate and determine that the ratio of initial to final core spin period is near ∼4000, implying (given the modest inferred radio pulsar periods at birth) that the initial spin periods of most supernova cores are likely quite long. However, we focus on only one progenitor and do not include magnetic fields. Nevertheless, at least for low-mass progenitors that explode early, we find muted consequences of rotation in most major particulars across a wide range of initial spins.
Source: The Astrophysical Journal
Authors: Adam Burrows, Tianshu Wang, David Vartanyan
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,499
Funders: National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, Gordon and Betty Moore Foundation, Princeton University, National Energy Research Scientific Computing Center, Office of Science, Advanced Scientific Computing Research, Argonne National Laboratory
Awards: G102163711, G107546177, G1313983767, New Theoretical Insights into Cosmic Cataclysms, G1348557892, G1643223109, G1664757510, G1671357260, G193590374, Computation for the Endless Frontier, G2248461281, G2287611682, G262962599, G2710870262, G2787076192, G3075337988, Solutions to the Core-Collapse Supernova Problem from Theory, G498139845, G513797252, G5398989114, G6352361788, G6918803902, G7337822738, G7769519149, G8099852790, G878601127, G993149817
OpenAlex ID: W7167794850