SMuK 2021 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 6: Numerical relativity

GR 6.7: Talk

Wednesday, September 1, 2021, 18:00–18:15, H6

Long term simulations of magnetic fields in isolated neutron stars — •William Cook¹, Ankan Sur², Brynmor Haskell², David Radice^3,4,5, and Sebastiano Bernuzzi¹ — ¹Theoretisch-Physikalisches Institut, Friedrich-Schiller Universitat Jena, 07743, Jena, Germany — ²Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Bartycka 18, 00-716 Warsaw, Poland — ³Institute for Gravitation & the Cosmos, The Pennsylvania State University, University Park, PA 16802, USA — ⁴Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA — ⁵Department of Astronomy & Astrophysics, The Pennsylvania State University, University Park, PA 16802, USA

We present the results of long term simulations of magnetised, isolated, neutron stars in the Cowling approximation, performed with the Athena++ code, lasting 490ms. By evolving neutron stars with initially poloidal and toroidal magnetic fields we investigate the long term development of the relative strengths of these components, as well as the onset of turbulent behaviour driven by an initial instability. We further investigate how the scaling of the energy spectrum evolves through the course of the simulation.