2025/10/31 by Sengupta, Sutirtha, Das Sujit, Sujit, Das +2
Physics and Astronomy · #Astronomy and Astrophysical Research #Computational Physics (physics.comp-ph) #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Physics - Theory (hep-th) #Solar and Stellar Astrophysics (astro-ph.SR) #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.2510.27189
openalex publication_date 2025/10/31 · openalex created_date 2025/11/05 · openalex updated_date 2026/07/28
We investigate the evolution of red supergiant (RSG) progenitors of core-collapse (CC) supernovae (SNe) with initial masses between 12-20~M_\odot focusing on the effects of enhanced mass loss due to pulsation-driven instabilities in their envelopes and subsequent dynamical ejections during advanced stages of nuclear burning. Using time-dependent mass loss from detailed MESA stellar evolution models, including a parameterized prescription for pulsation-driven superwinds and time-averaged mass loss rates attributed to resulting shock-induced ejections, we construct the circumstellar medium (CSM) before the SN explosion. We calculate resulting CSM density profiles and column densities considering the acceleration of the stellar wind. Our models produce episodes of enhanced mass loss 10-4-10-2~M_\odot~\rmyr-1 in the last centuries-decades before explosion forming dense CSM (>10-15~\rmgcm-3 at distances <1015 cm) -- consistent with those inferred from multi-wavelength observations of Type II SNe such as SN~2023ixf and SN~2020ywx.