Speakers

Back to Listing

Theoretical Astrophysics and General Relativity Seminar: Numerical Relativity in Spherical Polar Coordinates

Event Type
Seminar/Symposium
Sponsor
Department of Physics
Location
464 Loomis
Date
Mar 19, 2014   12:00 pm  
Speaker
Thomas Baumgarte (Bowdoin College)
Contact
Milton Ruiz
E-Mail
ruizm@illinois.edu
Views
1081
Originating Calendar
Physics - Astrophysics, Gravitation, and Cosmology Seminar

Spherical polar coordinates have many desirable properties for simulations in relativistic astrophysics.  In the absence of symmetry conditions, however, numerical relativity simulations in spherical polar coordinates have been hampered by problems associated with coordinate singularities.  In this talk I will discuss a new approach that does not require regularization of the singular terms, and instead employs a reference-metric formulation of the BSSN equations, a proper rescaling of the dynamical variables, and a partially-implicit Runge-Kutta integration scheme.  I will review these ingredients, and will then present some tests and early applications.

link for robots only