Résumé / Abstract Seminaire_GReCO

"Toward Understanding of GRB-Supernova Connection by General Relativistic MHD simulations"

S. Nagataki
Yukawa Inst. Theoretical Physics, Kyoto Univ. (Kyoto, Japon)

I would like to present my recent study on collapsars using a General Relativistic MHD (GRMHD) code that I have developed (S.N. arXiv:0902.1908). Also, I have developed a General Relativistic Force-Free (GRFFE) code by which Blandford-Znajek''s paraboloidal solution is reproduced. I am going to discuss how important it is to develop a hybrid code that includes GRMHD and GRFFE codes toward understanding the central engine of a long GRB. Further, I have done numerical simulations on collapsars using ZEUS code by adding some microphysics such as a realistic equation of state and neutrino cooling/heating (S.N. et al. ApJ 2007). If I have enough time, I would like to talk about explosive nucleosynthesis in a collapsar (S.N. et al. ApJ 2006), which can give a strict constraint on the central engine of a long GRB.

lundi 2 mars 2009 - 11:00
Salle des séminaires Évry Schatzman,
Institut d'Astrophysique de Paris

Page web du séminaire / Seminar's webpage