474 citations
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Showing 2024 · gr-qcShow all
3 papers · 2 filters
gr-qc2024★ 12 cited
Simulations of gravitational collapse in null coordinates: II. Critical collapse of an axisymmetric scalar field
Carsten Gundlach, Thomas W. Baumgarte, David Hilditch
We present the first numerical simulations in null coordinates of the collapse of nonspherical regular initial data to a black hole. We restrict to twist-free axisymmetry, and re-i…
gr-qc2024★ 6 cited
Simulations of gravitational collapse in null coordinates: I. Formulation and weak-field tests in generalised Bondi gauges
Carsten Gundlach, David Hilditch, Thomas W. Baumgarte
We present a code for numerical simulations of the collapse of regular initial data to a black hole in null coordinates. We restrict to twist-free axisymmetry with scalar field mat…
gr-qc2024★ 16 cited
Primordial black holes captured by neutron stars: relativistic point-mass treatment
Thomas W. Baumgarte, Stuart L. Shapiro
Primordial black holes (PBHs), if they exist, may collide with and be captured by neutron stars. We adopt a relativistic point-mass approximation to study this capture, the subsequ…