1 Joint Space-Science Institute, University of Maryland, College Park, MD, USA. andreoni@umd.edu.
2 Department of Astronomy, University of Maryland, College Park, MD, USA. andreoni@umd.edu.
3 Astrophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA. andreoni@umd.edu.
4 School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA. cough052@umn.edu.
5 Astrophysics Research Institute, Liverpool John Moores University, Liverpool, UK.
6 Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA, USA.
7 Department of Astrophysical Sciences, Princeton University, Princeton, NJ, USA.
8 Joint Space-Science Institute, University of Maryland, College Park, MD, USA.
9 Astrophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA.
10 Indian Institute of Technology Bombay, Mumbai, India.
11 Department of Astronomy, University of California, Berkeley, Berkeley, CA, USA.
12 Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
13 Miller Institute for Basic Research in Science, Berkeley, CA, USA.
14 Artemis, Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Nice, France.
15 The Oskar Klein Centre, Department of Physics, Stockholm University, AlbaNova, Stockholm, Sweden.
16 Instituto de Astrofísica de Andalucía, Granada, Spain.
17 The Oskar Klein Centre, Department of Astronomy, Stockholm University, AlbaNova, Stockholm, Sweden.
18 Department of Physics and Astronomy, University of Leicester, Leicester, UK.
19 Space Telescope Science Institute, Baltimore, MD, USA.
20 Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD, USA.
21 DARK, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
22 Center for Gravitation, Cosmology and Astrophysics, Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
23 Department of Astronomy, University of Maryland, College Park, MD, USA.
24 Indian Institute of Astrophysics, Bangalore, India.
25 School of Physics, University of Melbourne, Parkville, Victoria, Australia.
26 ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Sydney, Australia.
27 Department of Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA, USA.
28 DIRAC Institute, Department of Astronomy, University of Washington, Seattle, WA, USA.
29 Institut de Radioastronomie Millimétrique (IRAM), Saint Martin d'Hères, France.
30 Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA, USA.
31 INAF-Osservatorio Astronomico di Brera, Merate, Italy.
32 National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune, India.
33 DTU Space, National Space Institute, Technical University of Denmark, Kongens Lyngby, Denmark.
34 Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav), Swinburne University of Technology, Hawthorn, Victoria, Australia.
35 Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Victoria, Australia.
36 Space Science Data Center - Agenzia Spaziale Italiana, Rome, Italy.
37 Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University, Evanston, IL, USA.
38 IPAC, California Institute of Technology, Pasadena, CA, USA.
39 Department of Astrophysics, Radboud University, Nijmegen, The Netherlands.
40 W. M. Keck Observatory, Kamuela, HI, USA.
41 Center for Data-Driven Discovery, California Institute of Technology, Pasadena, CA, USA.
42 Indian Institute of Astrophysics, Bengaluru, India.
43 Nikhef, Amsterdam, The Netherlands.
44 Institute for Gravitational and Subatomic Physics (GRASP), Utrecht University, Utrecht, The Netherlands.
45 IAASARS, National Observatory of Athens, Penteli, Greece.
46 Department of Astrophysics, Astronomy and Mechanics, Faculty of Physics, National and Kapodistrian University of Athens, Athens, Greece.
47 Nordic Optical Telescope, Breña Baja, Spain.
48 Department of Physics and Astronomy, Aarhus University, Aarhus, Denmark.
49 National Radio Astronomy Observatory, Socorro, NM, USA.
50 Center for Astrophysics - Harvard & Smithsonian, Cambridge, MA, USA.
51 School of Physical and Chemical Sciences ∣ Te Kura Matū, University of Canterbury, Christchurch, New Zealand.
52 Caltech Optical Observatories, California Institute of Technology, Pasadena, CA, USA.
53 Université Lyon, Université Claude Bernard Lyon 1, CNRS, IP2I Lyon / IN2P3, IMR 5822, Villeurbanne, France.
54 Institute for Astronomy, University of Hawai'i, Pukalani, HI, USA.
55 Astronomical Institute of the Czech Academy of Sciences (ASU-CAS), Ondřejov, Czech Republic.
56 Department of Astronomy and Astrophysics, University of Toronto, Toronto, Ontario, Canada.
57 National Optical-Infrared Astronomy Research Laboratory, Tucson, AZ, USA.
58 GEPI, Observatoire de Paris, PSL University, CNRS, Meudon, France.
59 Institut d'Astrophysique de Paris, CNRS-UPMC, UMR7095, Paris, France.