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Modeling black hole ringdown: overtones or mirror modes?

ORAL

Abstract

The post-merger signal in a binary black hole merger, described by linear perturbation theory, is, historically, modeled using the dominant positive-frequency (corotating) fundamental mode. Recently, there has been efforts to model the post-merger signal using higher positive-frequency overtones in an attempt to achieve greater accuracy in describing the signal at earlier times. In general, negative-frequency (counterrotating) modes are also excited in a binary black hole merger. In this study, we model the post-merger signal using an overtone model and a mirror (counterrotating) mode model for a set of numerical relativity simulations across mass ratios and (aligned/anti-aligned) spins to identify the sections of the parameter space where an overtone and/or a mirror mode is more important.

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Authors

  • Arnab Dhani

    Pennsylvania State University

  • Anuradha Gupta

    New Jersey Inst of Tech, Pennsylvania State University, Bard College, University of Mississippi, Drexel Univ, Collaborator, University of Dayton, Morgan State University, Louisiana State University, University of Geneva, Instituto Superior Tecnico - Lisboa, Department of Biochemistry and Molecular Biology, Rutgers University, Institute for Quantitative Biomedicine, Rutgers University, Pennsylvania State University, and University of Illinois at Urbana-Champaign, University of Illinois at Urbana-Champaign, Department of Chemical Engineering, New Jersey Institute of Technology, Department of Physics and Astronomy, Rutgers University-New Brunswick, Department of Physics, Rutgers University, Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany, Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Chemin du Musée 3, CH-1700 Fribourg, Switzerland, The MacDiarmid Institute for Advanced Materials and Nanotechnology, 1010 Auckland, New Zealand, Department of Physics, College of William & Mary, Williamsburg, VA 23187-8795, USA, New Jersey Institute of Technology, Newark, NJ, USA, University of California, Los Angeles, CA, USA, University of California, Berkeley, CA, USA, Space Research Institute of RAS, Moscow, Russia, Georgetown University, Institut Polytechnique de Paris, University of Delaware, Brookhaven National Laboratory, San Diego State University, University of Chicago, University of Illinois at Chicago, Argonne National Laboratory, Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA, University of Washington