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- Austrian Academy of SciencesAT73 papers
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21 papers · 1 filter
Space-time diagrammatics
Piotr T. Chruściel, Christa R. Ölz, Sebastian J. Szybka
We introduce a new class of two-dimensional diagrams, the \emph{projection diagrams}, as a tool to visualize the global structure of space-times. We construct the diagrams for seve…
An efficient iterative method to reduce eccentricity in numerical-relativity simulations of compact binary inspiral
Michael Pürrer, Sascha Husa, Mark Hannam
We present a new iterative method to reduce eccentricity in black-hole-binary simulations. Given a good first estimate of low-eccentricity starting momenta, we evolve puncture init…
A lower bound for the mass of axisymmetric connected black hole data sets
Piotr T. Chruściel, Luc Nguyen
We present a generalisation of the Brill-type proof of positivity of mass for axisymmetric initial data to initial data sets with black hole boundaries. The argument leads to a str…
Oscillations toward the singularity of LRS Bianchi type IX cosmological models with Vlasov matter
Simone Calogero, J. Mark Heinzle
We analyze the dynamics of a class of cosmological solutions of the Einstein-Vlasov equations. These equations describe an ensemble of collisionless particles (which represent gala…
Length requirements for numerical-relativity waveforms
Mark Hannam, Sascha Husa, Frank Ohme +1
One way to produce complete inspiral-merger-ringdown gravitational waveforms from black-hole-binary systems is to connect post-Newtonian (PN) and numerical-relativity (NR) results…
Ghost points in inverse scattering constructions of stationary Einstein metrics
Piotr T. Chruściel, Luc Nguyen
We prove a removable singularities theorem for stationary Einstein equations, with useful implications for constructions of stationary solutions using soliton methods.