The following contributors to the paper passed away before they could be recognized with the Special Breakthrough Prize:
1 LIGO, California Institute of Technology, Pasadena, California 91125, USA
2 Louisiana State University, Baton Rouge, Louisiana 70803, USA
3 Università di Salerno, Fisciano, I-84084 Salerno, Italy
4 INFN, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, I-80126 Napoli, Italy
5 University of Florida, Gainesville, Florida 32611, USA
6 LIGO Livingston Observatory, Livingston, Louisiana 70754, USA
7 Laboratoire d’Annecy-le-Vieux de Physique des Particules (LAPP), Université Savoie Mont Blanc, CNRS/IN2P3, F-74941 Annecy-le-Vieux, France
8 Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik, D-30167 Hannover, Germany
9 Nikhef, Science Park, 1098 XG Amsterdam, Netherlands
10 LIGO, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
11 Instituto Nacional de Pesquisas Espaciais, 12227-010 São José dos Campos, São Paulo, Brazil
12 INFN, Gran Sasso Science Institute, I-67100 L’Aquila, Italy
13 INFN, Sezione di Roma Tor Vergata, I-00133 Roma, Italy
14 Inter-University Centre for Astronomy and Astrophysics, Pune 411007, India
15 International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bangalore 560012, India
16 University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA
17 Leibniz Universität Hannover, D-30167 Hannover, Germany
18 Università di Pisa, I-56127 Pisa, Italy
19 INFN, Sezione di Pisa, I-56127 Pisa, Italy
20 Australian National University, Canberra, Australian Capital Territory 0200, Australia
21 The University of Mississippi, University, Mississippi 38677, USA
22 California State University Fullerton, Fullerton, California 92831, USA
23 LAL, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay, France
24 Chennai Mathematical Institute, Chennai, India 603103
25 Università di Roma Tor Vergata, I-00133 Roma, Italy
26 University of Southampton, Southampton SO17 1BJ, United Kingdom
27 Universität Hamburg, D-22761 Hamburg, Germany
28 INFN, Sezione di Roma, I-00185 Roma, Italy
29 Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik, D-14476 Potsdam-Golm, Germany
30 APC, AstroParticule et Cosmologie, Université Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris, Sorbonne Paris Cité, F-75205 Paris Cedex 13, France
31 Montana State University, Bozeman, Montana 59717, USA
32 Università di Perugia, I-06123 Perugia, Italy
33 INFN, Sezione di Perugia, I-06123 Perugia, Italy
34 European Gravitational Observatory (EGO), I-56021 Cascina, Pisa, Italy
35 Syracuse University, Syracuse, New York 13244, USA
36 SUPA, University of Glasgow, Glasgow G12 8QQ, United Kingdom
37 LIGO Hanford Observatory, Richland, Washington 99352, USA
38 Wigner RCP, RMKI, H-1121 Budapest, Konkoly Thege Miklós út 29-33, Hungary
39 Columbia University, New York, New York 10027, USA
40 Stanford University, Stanford, California 94305, USA
41 Università di Padova, Dipartimento di Fisica e Astronomia, I-35131 Padova, Italy
42 INFN, Sezione di Padova, I-35131 Padova, Italy
43 CAMK-PAN, 00-716 Warsaw, Poland
44 Astronomical Observatory Warsaw University, 00-478 Warsaw, Poland
45 University of Birmingham, Birmingham B15 2TT, United Kingdom
46 Università degli Studi di Genova, I-16146 Genova, Italy
47 INFN, Sezione di Genova, I-16146 Genova, Italy
48 RRCAT, Indore MP 452013, India
49 Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
50 SUPA, University of the West of Scotland, Paisley PA1 2BE, United Kingdom
51 University of Western Australia, Crawley, Western Australia 6009, Australia
52 Department of Astrophysics/IMAPP, Radboud University Nijmegen, P.O. Box 9010, 6500 GL Nijmegen, Netherlands
53 Artemis, Université Côte d’Azur, CNRS, Observatoire Côte d’Azur, CS 34229, Nice cedex 4, France
54 MTA Eötvös University, “Lendulet” Astrophysics Research Group, Budapest 1117, Hungary
55 Institut de Physique de Rennes, CNRS, Université de Rennes 1, F-35042 Rennes, France
56 Washington State University, Pullman, Washington 99164, USA
57 Università degli Studi di Urbino “Carlo Bo,” I-61029 Urbino, Italy
58 INFN, Sezione di Firenze, I-50019 Sesto Fiorentino, Firenze, Italy
59 University of Oregon, Eugene, Oregon 97403, USA
60 Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, F-75005 Paris, France
61 VU University Amsterdam, 1081 HV Amsterdam, Netherlands
62 University of Maryland, College Park, Maryland 20742, USA
63 Center for Relativistic Astrophysics and School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
64 Institut Lumière Matière, Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5306, 69622 Villeurbanne, France
65 Laboratoire des Matériaux Avancés (LMA), IN2P3/CNRS, Université de Lyon, F-69622 Villeurbanne, Lyon, France
66 Universitat de les Illes Balears, IAC3—IEEC, E-07122 Palma de Mallorca, Spain
67 Università di Napoli “Federico II,” Complesso Universitario di Monte S. Angelo, I-80126 Napoli, Italy
68 NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
69 Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario M5S 3H8, Canada
70 Tsinghua University, Beijing 100084, China
71 Texas Tech University, Lubbock, Texas 79409, USA
72 The Pennsylvania State University, University Park, Pennsylvania 16802, USA
73 National Tsing Hua University, Hsinchu City, 30013 Taiwan, Republic of China
74 Charles Sturt University, Wagga Wagga, New South Wales 2678, Australia
75 University of Chicago, Chicago, Illinois 60637, USA
76 Caltech CaRT, Pasadena, California 91125, USA
77 Korea Institute of Science and Technology Information, Daejeon 305-806, Korea
78 Carleton College, Northfield, Minnesota 55057, USA
79 Università di Roma “La Sapienza,” I-00185 Roma, Italy
80 University of Brussels, Brussels 1050, Belgium
81 Sonoma State University, Rohnert Park, California 94928, USA
82 Northwestern University, Evanston, Illinois 60208, USA
83 The University of Texas Rio Grande Valley, Brownsville, Texas 78520, USA
84 University of Minnesota, Minneapolis, Minnesota 55455, USA
85 The University of Melbourne, Parkville, Victoria 3010, Australia
86 The University of Sheffield, Sheffield S10 2TN, United Kingdom
87 University of Sannio at Benevento, I-82100 Benevento, Italy and INFN, Sezione di Napoli, I-80100 Napoli, Italy
88 Montclair State University, Montclair, New Jersey 07043, USA
89 Università di Trento, Dipartimento di Fisica, I-38123 Povo, Trento, Italy
90 INFN, Trento Institute for Fundamental Physics and Applications, I-38123 Povo, Trento, Italy
91 Cardiff University, Cardiff CF24 3AA, United Kingdom
92 National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
93 School of Mathematics, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
94 Indian Institute of Technology, Gandhinagar Ahmedabad Gujarat 382424, India
95 Institute for Plasma Research, Bhat, Gandhinagar 382428, India
96 University of Szeged, Dóm tér 9, Szeged 6720, Hungary
97 Embry-Riddle Aeronautical University, Prescott, Arizona 86301, USA
98 University of Michigan, Ann Arbor, Michigan 48109, USA
99 Tata Institute of Fundamental Research, Mumbai 400005, India
100 Rutherford Appleton Laboratory, HSIC, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
101 American University, Washington, D.C. 20016, USA
102 Rochester Institute of Technology, Rochester, New York 14623, USA
103 University of Massachusetts-Amherst, Amherst, Massachusetts 01003, USA
104 University of Adelaide, Adelaide, South Australia 5005, Australia
105 West Virginia University, Morgantown, West Virginia 26506, USA
106 University of Biał ystok, 15-424 Biał ystok, Poland
107 SUPA, University of Strathclyde, Glasgow G1 1XQ, United Kingdom
108 IISER-TVM, CET Campus, Trivandrum Kerala 695016, India
109 Institute of Applied Physics, Nizhny Novgorod, 603950, Russia
110 Pusan National University, Busan 609-735, Korea
111 Hanyang University, Seoul 133-791, Korea
112 NCBJ, 05-400 Świerk-Otwock, Poland
113 IM-PAN, 00-956 Warsaw, Poland
114 Monash University, Victoria 3800, Australia
115 Seoul National University, Seoul 151-742, Korea
116 University of Alabama in Huntsville, Huntsville, Alabama 35899, USA
117 ESPCI, CNRS, F-75005 Paris, France
118 Università di Camerino, Dipartimento di Fisica, I-62032 Camerino, Italy
119 Southern University and A&M College, Baton Rouge, Louisiana 70813, USA
120 College of William and Mary, Williamsburg, Virginia 23187, USA
121 Instituto de Física Teórica, University Estadual Paulista/ICTP South American Institute for Fundamental Research, São Paulo SP 01140-070, Brazil
122 University of Cambridge, Cambridge CB2 1TN, United Kingdom
123 IISER-Kolkata, Mohanpur, West Bengal 741252, India
124 Whitman College, 345 Boyer Avenue, Walla Walla, Washington 99362 USA
125 National Institute for Mathematical Sciences, Daejeon 305-390, Korea
126 Hobart and William Smith Colleges, Geneva, New York 14456, USA
127 Janusz Gil Institute of Astronomy, University of Zielona Góra, 65-265 Zielona Góra, Poland
128 Andrews University, Berrien Springs, Michigan 49104, USA
129 Università di Siena, I-53100 Siena, Italy
130 Trinity University, San Antonio, Texas 78212, USA
131 University of Washington, Seattle, Washington 98195, USA
132 Kenyon College, Gambier, Ohio 43022, USA
133 Abilene Christian University, Abilene, Texas 79699, USA
