4 papers
The Yamabe invariant for axially symmetric two Kerr black holes initial data
Gastón A. Avila, Sergio Dain
An explicit 3-dimensional Riemannian metric is constructed which can be interpreted as the (conformal) sum of two Kerr black holes with aligned angular momentum. When the separatio…
Extra-Large Remnant Recoil Velocities and Spins from Near-Extremal-Bowen-York-Spin Black-Hole Binaries
Sergio Dain, Carlos O. Lousto, Yosef Zlochower
We evolve equal-mass, equal-spin black-hole binaries with specific spins of a/mH 0.925, the highest spins simulated thus far and nearly the largest possible for Bowen-York black ho…
The inequality between mass and angular momentum for axially symmetric black holes
Sergio Dain
In this essay I first discuss the physical relevance of the inequality for axially symmetric (non-stationary) black holes, where m is the mass and J the angular…
Asymptotically flat and regular Cauchy data
S. Dain
I describe the construction of a large class of asymptotically flat initial data with non-vanishing mass and angular momentum for which the metric and the extrinsic curvature have…