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Critical phenomena in the gravitational collapse of electromagnetic waves
Thomas W. Baumgarte, Carsten Gundlach, David Hilditch
We numerically investigate the threshold of black-hole formation in the gravitational collapse of electromagnetic waves in axisymmetry. We find approximate power-law scaling $ρ_{\r…
Critical phenomena in gravitational collapse with two competing massless matter fields
Carsten Gundlach, Thomas W. Baumgarte, David Hilditch
In the gravitational collapse of matter beyond spherical symmetry, gravitational waves are necessarily present. On the other hand, gravitational waves can collapse to a black hole…
Maximally Rotating Supermassive Stars at the Onset of Collapse: Effects of Gas Pressure
Kenneth A. Dennison, Thomas W. Baumgarte, Stuart L. Shapiro
The "direct collapse" scenario has emerged as a promising evolutionary track for the formation of supermassive black holes early in the Universe. In an idealized version of such a…
Dark matter heating of gas accreting onto Sgr A
Elizabeth R. Bennewitz, Cristian Gaidau, Thomas W. Baumgarte +1
We study effects of heating by dark matter (DM) annihilation on black hole gas accretion. We observe that, for reasonable assumptions about DM densities in spikes around supermassi…
On the dynamical stability of quasi-toroidal differentially rotating neutron stars
Pedro L. Espino, Vasileios Paschalidis, Thomas W. Baumgarte +1
We investigate the dynamical stability of relativistic, differentially rotating, quasi-toroidal models of neutron stars through hydrodynamical simulations in full general relativit…