Bulletin of the American Physical Society
2006 APS April Meeting
Saturday–Tuesday, April 22–25, 2006; Dallas, TX
Session L3: Advances in Numerical Relativity II |
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Sponsoring Units: GGR COM Chair: Deirdre Shoemaker, The Pennsylvania State University Room: Hyatt Regency Dallas Landmark C |
Sunday, April 23, 2006 3:15PM - 3:51PM |
L3.00001: Simulations of Binary Black Hole Mergers Invited Speaker: I will review recent advances in the simulation of binary black hole mergers using a numerical scheme based on generalized harmonic coordinates. After a brief overview of the formalism and method I will show results from the evolution of several different classes of initial data, including unequal mass binaries and Cook-Pfieffer quasi-circular inspiral data sets. [Preview Abstract] |
Sunday, April 23, 2006 3:51PM - 4:27PM |
L3.00002: Numerical Simulation of Binary Black Holes Invited Speaker: The coalescence of binary black hole systems is expected to be an excellent source of gravitational radiation for detectors such as LIGO and LISA. Robust, accurate, and long-term numerical simulations of astrophysically realistic binary black hole systems have yet to be achieved, but tremendous progress towards this goal has been made recently. I will discuss some of the challenges involved, present recent results, and speculate about solutions to some of the remaining problems. [Preview Abstract] |
Sunday, April 23, 2006 4:27PM - 5:03PM |
L3.00003: Neutron Stars in Compact Binaries Invited Speaker: In this talk I will review recent progress in numerical relativity simulations of neutron stars in compact binaries. I will first discuss the construction of initial data that model binary neutron stars and black hole-neutron star binaries in quasi-equilibrium. I will then describe dynamical evolution calculations of such binaries that simulate the neutron stars' coalescence, collapse or tidal disruption, and I will close by discussing some of the astrophysical implications of these simulations. [Preview Abstract] |
Sunday, April 23, 2006 5:03PM - 5:39PM |
L3.00004: Numerical simulations of generic singularities Invited Speaker: Numerical simulations are performed of the approach to the singularity of spacetimes with no symmetries. In all cases the singularity is spacelike, and as it is approached, it is local in the sense that the terms in Einstein's equation with spatial derivatives become unimportant compared to those with time derivatives. The dynamics thus becomes locally that of a homogeneous spacetime, though a different homogeneous spacetime for each spatial point. In the case of a scalar field, these homogeneous spacetimes are of the Kasner type with power law behavior of the scale factors. In the vacuum case, the homogeneous spacetimes are Mixmaster type, with oscillatory behavior. [Preview Abstract] |
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