7 papers
The Era of Precision in Computational Models of Gravitational Waves
Ulrich Sperhake
Einstein's equations of general relativity are one of the most complicated set of equations in all of physics and, for all but idealized physical settings, can only be solved by nu…
Lessons from binary dynamics of inspiralling equal-mass boson-star mergers
Tamara Evstafyeva, Antonia Seifert, Ulrich Sperhake +2
We explore the gravitational-wave phenomenology of equal-mass inspiralling boson-star binaries using numerical relativity simulations. In particular, we characterise the waveform d…
Black Hole-Boson Star Binaries: Gravitational Wave Signals and Tidal Disruption
Gareth Arturo Marks, Seppe J. Staelens, Ulrich Sperhake
We present a detailed, fully nonlinear study of binary systems involving one black hole and one boson star, considering the effects of both a quartic self-interaction and a soliton…
Nonlinear Dynamics in General Relativity
Vitor Cardoso, Jaime Redondo-Yuste, Ulrich Sperhake +1
Black holes and gravitational waves are consequences of the nonlinear character of the Einstein equations. Yet, the remarkable properties of General Relativity point to the existen…
Gravitational scattering of solitonic boson stars: Analytics vs Numerics
Thibault Damour, Tamanna Jain, Ulrich Sperhake
We study the scattering of boson-star binaries, taking into account three effects: point-mass gravitational, tidal, and short-range scalar-field interactions. We compare analytic r…
Hair is complicated: Gravitational waves from stable and unstable boson-star mergers
Bo-Xuan Ge, Eugene A. Lim, Ulrich Sperhake +5
We explore the gravitational-wave emission from head-on collisions of equal-mass solitonic boson-star binaries from simulations spanning a two-dimensional parameter space, consisti…