2020/12/31 by Shunsaku Horiuchi, Tomoya Kinugawa, Tomoya Takiwaki +2
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Binary number #Boundary (topology) #Computer science #Gamma-ray bursts and supernovae #Neutrino #Neutrino Physics Research #Nuclear physics #Physics #Population #Rotation (mathematics) #Stars #Supernova #White dwarf #astro-ph.HE #astro-ph.SR
paper · pdf · doi:10.1103/physrevd.103.043003
published as Phys. Rev. D 103, 043003 (2021) · 12 pages, 8 figures, matches published version
arxiv created 2021/01/28 · openalex publication_date 2021/02/02 · arxiv updated 2021/02/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Binary interactions, especially mass transfer and mergers, can strongly influence the evolution of massive stars and change their final properties and the occurrence of supernovae. Here, we investigate how binary interactions affect predictions of the diffuse flux of neutrinos. By performing stellar population syntheses including prescriptions for binary interactions, we show that the resulting detection rates of the diffuse supernova neutrino background is enhanced by 15%--20% compared to estimates without binary considerations. A source of significant uncertainty arises due to the presently sparse knowledge of the evolution of rapidly rotating carbon-oxygen cores, especially those created as a result of mergers near the white dwarf to core collapse boundary. The enhancement effect may be as small as a few percent if the effects of rotation in postmerger systems are neglected, or as large as 75% if trends are extrapolated. Our estimates serve to highlight that binary effects can be important.