Excision technique in constrained formulations of Einstein equations: collapse scenario

Spanish Relativity Meeting: almost 100 years after Einstein's revolution

Cordero-Carrión, I.^1,2 ; Vasset, N.^2 ; Novak, J.^2 ; Jaramillo, J.L.^3

Department of Applied Mathematics, University of Valencia, C/ Dr. Moliner 50, Burjassot

E-46100, Spain^1

Laboratoire Univers et Théories (LUTH), Observatoire de Paris, Université Paris Diderot, 5 place Jules Janssen, Meudon

F-92190, France^2

Université de Bretagne Occidentale, 6 ave. Le Gorgeu, CS 93837, Brest Cedex 3

29238, France^3

关键词: Black holes;    Dynamical evolution;    Einstein equations;    Neutron stars;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/600/1/012059/pdf
DOI  :  10.1088/1742-6596/600/1/012059

来源: IOP

【 摘 要 】

We present a new excision technique used in constrained formulations of Einstein equations to deal with black hole in numerical simulations. We show the applicability of this scheme in several scenarios. In particular, we present the dynamical evolution of the collapse of a neutron star to a black hole, using the CoCoNuT code and this excision technique.