Improved methods for simulating nearly extremal binary black holes
نویسندگان
چکیده
Mark A. Scheel, Matthew Giesler, 2 Daniel A. Hemberger, Geoffrey Lovelace, 1 Kevin Kuper, Michael Boyle, Béla Szilágyi, and Lawrence E. Kidder Theoretical Astrophysics 350-17, California Institute of Technology, Pasadena, CA 91125, USA Gravitational Wave Physics and Astronomy Center, California State University Fullerton, Fullerton, California 92834, USA Center for Radiophysics and Space Research, Cornell University, Ithaca, New York 14853, USA (Dated: December 5, 2014)
منابع مشابه
Simulating merging binary black holes with nearly extremal spins
Astrophysically realistic black holes may have spins that are nearly extremal (i.e., close to 1 in dimensionless units). Numerical simulations of binary black holes are important tools both for calibrating analytical templates for gravitational-wave detection and for exploring the nonlinear dynamics of curved spacetime. However, all previous simulations of binary-black-hole inspiral, merger, an...
متن کاملBinary-black-hole initial data with nearly extremal spins
There is a significant possibility that astrophysical black holes with nearly extremal spins exist. Numerical simulations of such systems require suitable initial data. In this paper, we examine three methods of constructing binary-black-hole initial data, focusing on their ability to generate black holes with nearly extremal spins: (i) Bowen-York initial data, including standard puncture data ...
متن کاملBlack Holes Coupled to a Massive Dilaton
We investigate charged black holes coupled to a massive dilaton. It is shown that black holes which are large compared to the Compton wavelength of the dilaton resemble the Reissner-Nordström solution, while those which are smaller than this scale resemble the massless dilaton solutions. Black holes of order the Compton wavelength of the dilaton can have wormholes outside the event horizon in t...
متن کاملMassive disk formation in the tidal disruption of a neutron star by a nearly extremal black hole
Black hole–neutron star (BHNS) binaries are important sources of gravitational waves for second-generation interferometers, and BHNS mergers are also a proposed engine for short, hard gamma-ray bursts. The behavior of both the spacetime (and thus the emitted gravitational waves) and the neutron star matter in a BHNS merger depend strongly and nonlinearly on the black hole’s spin. While there is...
متن کاملQuasinormal modes of nearly extremal Kerr spacetimes: spectrum bifurcation and power-law ringdown
We provide an in-depth investigation of quasinormal-mode oscillations of Kerr black holes with nearly extremal angular momenta. We first discuss in greater detail the two distinct types of quasinormal mode frequencies presented in a recent paper [1]. One set of modes, that we call “zerodamping modes”, has vanishing imaginary part in the extremal limit, and exists for all corotating perturbation...
متن کامل