Universidad Nacional de Córdoba,\
    Ciudad Universitaria, 5000 Córdoba, Argentina.
- ' 2. Natural Science Division, Southampton College of Long Island University, Southampton NY 11968'
- ' 3. Department of Physics and Astronomy, 202 Nicholson Hall, Louisiana State University, Baton Rouge LA 70803-4001'
author:
- 'Reinaldo J. Gleiser$^1$, Gaurav Khanna $^2$, Jorge Pullin$^3$'
date: May 16th 2002
title: Perturbative evolution of conformally flat initial data for a single boosted black hole
---

psfig

Introduction {#sec:intro}
============

There is significant interest in obtaining waveforms for the gravitational radiation produced in the collision of black holes. Progress is being made on this problem both using supercomputers [@grandlychallenged] and perturbative calculations [@PuKy]. One of the open issues is what families of initial data are appropriate to represent the collision of two black holes, especially when the latter are not far away from each other. The state of the art of numerical simulations suggests that for some time we may not be able to start simulations with the black holes at a sufficiently large separation, such that one can assume a simple linear superposition will work. This leaves open the issue of how much “spurious radiation” is one introducing in the various proposals for superpositions 