3 papers
astro-ph.HE2025
Signatures of Exploding Supermassive PopIII Stars at High Redshift in JWST, EUCLID and Roman Space Telescope
Cédric Jockel, Kyohei Kawaguchi, Sho Fujibayashi +1
Recently discovered supermassive black holes with masses of at redshifts - in active galactic nuclei (AGN) pose severe challenges to our understandi…
astro-ph.HE2024
Threshold mass of the general relativistic instability for supermassive star cores
Masaru Shibata, Sho Fujibayashi, Cédric Jockel +1
The dependence of the final fate of supermassive star (SMS) cores on their mass and angular momentum is studied with simple modeling. SMS cores in the hydrogen burning phase encoun…
astro-ph.HE2024
Powerful explosions from the collapse of rotating supermassive stars
Sho Fujibayashi, Cédric Jockel, Kyohei Kawaguchi +2
We perform new general relativistic hydrodynamics simulations for collapses of rotating supermassive star cores with an approximate nuclear burning up to carbon and a detailed equa…