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SUMMARY:Gravitational collapse simulations on null cones - Carsten Gundlac
 h (Southampton University)
DTSTART:20241025T120000Z
DTEND:20241025T130000Z
UID:TALK223408@talks.cam.ac.uk
CONTACT:Daniela Cors
DESCRIPTION:Null coordinates have been used in numerical relativity in sph
 erical symmetry\, in gravitational wave extraction\, and in simulating adS
 -black hole spacetime. I review the structure of the equations and standar
 d gauge choices. Then I focus on gravitational collapse simulations beyond
  spherical symmetry where the time slices are null cones emerging from a r
 egular central worldline. I show how to deal with problems at the centre\,
  and how to adapt the coordinates to critical collapse. I present a well-p
 osedness result\, and first simulations of axisymmetric scalar field criti
 cal collapse.
LOCATION:Potter room / https://cam-ac-uk.zoom.us/j/87235967698
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