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SUMMARY:3D numerical study of magnetorotational effects on extreme core-co
 llapse supernovae
DTSTART:20251217T100000Z
DTEND:20251217T110000Z
DTSTAMP:20260315T044500Z
UID:indico-event-9483@indico.fysik.su.se
DESCRIPTION:Speakers: Liubov Kovalenko (Stockholm University)\n\nCore-coll
 apse supernovae are among the most energetic explosions in the universe. T
 heir evolution is shaped by the hydrodynamics\, neutrino transport\, and m
 agnetic fields at work in the first seconds after the collapse. We investi
 gate these processes through 3D simulations of an extremely compact 39-Msu
 n progenitor using the FLASH M1 magnetohydrodynamics code. Our study explo
 res three models – a nonmagnetized nonrotating baseline model\, a nonmag
 netized rotating model\, and a magnetized rotating model – to highlight 
 the roles of rotation and magnetic fields in shaping the explosion mechani
 sm and multi-messenger signals. We evolve each model from core collapse th
 rough bounce and into the early post-bounce phase (~0.7s post-bounce). We 
 use a three-species\, energy-dependent M1 moment scheme for neutrino trans
 port\, incorporating a state-of-the-art nuclear equation of state and adva
 nced treatments of deleptonization and neutrino heating/cooling. All three
  simulations undergo similar gravitational collapse and bounces. During th
 e post-bounce phase\, rotation and magnetic fields significantly impact th
 e shock dynamics\, explosion morphology\, protoneutron star development\, 
 and angular variations in neutrino distributions. We will present these fi
 ndings\, highlighting how rotation and magnetization influence neutrino an
 d GW signatures. We will discuss potential observational signatures that c
 ould help distinguish magnetorotationally influenced explosions from more 
 spherical cases. Future work will refine our treatment of neutrino microph
 ysics and magnetic fields while extending simulations to longer time scale
 s and a broader range of progenitor conditions.\n\nhttps://indico.fysik.su
 .se/event/9483/
LOCATION:Albano 3: 6228 - Mega (22 seats) (Albano Building 3)
URL:https://indico.fysik.su.se/event/9483/
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