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Constraining the nuclear equation of state from orbits of primordial black holes inside neutron stars
Anna Chen, Juan Diego DelPrado, Thomas W. Baumgarte +1
Lacking terrestrial experimental data, our best constraints on the behavior of matter at high densities up to and above nuclear density arise from observations of neutron stars. Cu…
Primordial black holes captured by neutron stars: simulations in general relativity
Thomas W. Baumgarte, Stuart L. Shapiro
We present self-consistent numerical simulations in general relativity of putative primordial black holes inside neutron stars. Complementing a companion paper in which we assumed…
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…
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…
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…
Could long-period transients be powered by primordial black hole capture?
Thomas W. Baumgarte, Stuart L. Shapiro
Long-period radio transients have unusual properties that challenge their interpretation as pulsars or magnetars. We examine whether they might instead be powered by primordial bla…