S E M I N A R I

Departament d'Astronomia i Astrofísica
Universitat de València

    Numerical relativity in spherical polar coordinates: calculations with the BSSN formulation

Pedro Montero

Max Planck Institut für Astrophysics, Garching, Alemanya


Seminari del departament d'Astronomia i Astrofísica

Dijous 19 setembre 2013

12:00


Resum

I report on an implementation of the BSSN equations coupled to the general relativistic hydrodynamic equations in spherical polar coordinates without any symmetry assumptions. Using a PIRK method and a reference-metric approach we obtain stable simulations in three spatial dimensions without the need to regularize the origin or the axis. We perform and discuss a number of tests to assess the stability, accuracy and convergence of the code.