Reed Essick^*

• Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, Ontario N2L 2Y5, Canada; Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 3H8, Canada; Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada; and David A. Dunlap Department of Astronomy, University of Toronto, 50 St. George Street, Toronto, Ontario M5S 3H4, Canada

Will M. Farr

• Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794, USA and Center for Computational Astrophysics, Flatiron Institute, New York, New York 10010, USA

Maya Fishbach

• NASA Hubble Fellowship Program Einstein Fellow, Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University, 1800 Sherman Ave, Evanston, Illinois 60201, USA; Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 3H8, Canada; Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada; and David A. Dunlap Department of Astronomy, University of Toronto, 50 St. George Street, Toronto, Ontario M5S 3H4, Canada

Daniel E. Holz

• Department of Physics, Department of Astronomy and Astrophysics, Enrico Fermi Institute, and Kavli Institute for Cosmological Physics, The University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637, USA

Erik Katsavounidis

• LIGO Laboratory and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 185 Albany St. Cambridge, Massachusetts 02139, USA

• ^*essick@cita.utoronto.ca