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Neutron Star Tests with the Nmesh Program

ORAL

Abstract

We present the results from recent single Neutron Star test evolutions that we have performed using the discontinuous Galerkin method based Nmesh program. These include tests for the single Neutron Star to check long-time stability equilibrium configurations, consistency under perturbations, migration of an unstable configuration to a stable one and evolution of a boosted star. To allow for changing gravitational fields, we use the Generalized Harmonic system to evolve the metric of the Neutron star. We apply refinement to the mesh as necessary and relevant. We also study the effect of other aspects, such as application of filters, positivity limiters or the MRS limiter, and the use of an artificial atmosphere, on the runs.

Presenters

  • Ananya Adhikari

    Florida Atlantic University

Authors

  • Ananya Adhikari

    Florida Atlantic University

  • Wolfgang H Tichy

    Florida Atlantic University

  • liwei Ji

    Rochester Institute of Technology