Draft version 16 November 2017
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GW170608: OBSERVATION OF A 19-SOLAR-MASS BINARY BLACK HOLE COALESCENCE
B. P. Abbott,
1
R. Abbott,
1
T. D. Abbott,
2
F. Acernese,
3, 4
K. Ackley,
5, 6
C. Adams,
7
T. Adams,
8
P. Addesso,
9
R. X. Adhikari,
1
V. B. Adya,
10
C. Affeldt,
10
M. Afrough,
11
B. Agarwal,
12
M. Agathos,
13
K. Agatsuma,
14
N. Aggarwal,
15
O. D. Aguiar,
16
L. Aiello,
17, 18
A. Ain,
19
P. Ajith,
20
B. Allen,
10, 21, 22
G. Allen,
12
A. Allocca,
23, 24
P. A. Altin,
25
A. Amato,
26
A. Ananyeva,
1
S. B. Anderson,
1
W. G. Anderson,
21
S. V. Angelova,
27
S. Antier,
28
S. Appert,
1
K. Arai,
1
M. C. Araya,
1
J. S. Areeda,
29
N. Arnaud,
28, 30
K. G. Arun,
31
S. Ascenzi,
32, 33
G. Ashton,
10
M. Ast,
34
S. M. Aston,
7
P. Astone,
35
D. V. Atallah,
36
P. Aufmuth,
22
C. Aulbert,
10
K. AultONeal,
37
C. Austin,
2
A. Avila-Alvarez,
29
S. Babak,
38
P. Bacon,
39
M. K. M. Bader,
14
S. Bae,
40
P. T. Baker,
41
F. Baldaccini,
42, 43
G. Ballardin,
30
S. W. Ballmer,
44
S. Banagiri,
45
J. C. Barayoga,
1
S. E. Barclay,
46
B. C. Barish,
1
D. Barker,
47
K. Barkett,
48
F. Barone,
3, 4
B. Barr,
46
L. Barsotti,
15
M. Barsuglia,
39
D. Barta,
49
J. Bartlett,
47
I. Bartos,
50, 5
R. Bassiri,
51
A. Basti,
23, 24
J. C. Batch,
47
M. Bawaj,
52, 43
J. C. Bayley,
46
M. Bazzan,
53, 54
B. B
́
ecsy,
55
C. Beer,
10
M. Bejger,
56
I. Belahcene,
28
A. S. Bell,
46
B. K. Berger,
1
G. Bergmann,
10
J. J. Bero,
57
C. P. L. Berry,
58
D. Bersanetti,
59
A. Bertolini,
14
J. Betzwieser,
7
S. Bhagwat,
44
R. Bhandare,
60
I. A. Bilenko,
61
G. Billingsley,
1
C. R. Billman,
5
J. Birch,
7
R. Birney,
62
O. Birnholtz,
10
S. Biscans,
1, 15
S. Biscoveanu,
63, 6
A. Bisht,
22
M. Bitossi,
30, 24
C. Biwer,
44
M. A. Bizouard,
28
J. K. Blackburn,
1
J. Blackman,
48
C. D. Blair,
1, 64
D. G. Blair,
64
R. M. Blair,
47
S. Bloemen,
65
O. Bock,
10
N. Bode,
10
M. Boer,
66
G. Bogaert,
66
A. Bohe,
38
F. Bondu,
67
E. Bonilla,
51
R. Bonnand,
8
B. A. Boom,
14
R. Bork,
1
V. Boschi,
30, 24
S. Bose,
68, 19
K. Bossie,
7
Y. Bouffanais,
39
A. Bozzi,
30
C. Bradaschia,
24
P. R. Brady,
21
M. Branchesi,
17, 18
J. E. Brau,
69
T. Briant,
70
A. Brillet,
66
M. Brinkmann,
10
V. Brisson,
28
P. Brockill,
21
J. E. Broida,
71
A. F. Brooks,
1
D. A. Brown,
44
D. D. Brown,
72
S. Brunett,
1
C. C. Buchanan,
2
A. Buikema,
15
T. Bulik,
73
H. J. Bulten,
74, 14
A. Buonanno,
38, 75
D. Buskulic,
8
C. Buy,
39
R. L. Byer,
51
M. Cabero,
10
L. Cadonati,
76
G. Cagnoli,
26, 77
C. Cahillane,
1
J. Calder
́
on Bustillo,
76
T. A. Callister,
1
E. Calloni,
78, 4
J. B. Camp,
79
M. Canepa,
80, 59
P. Canizares,
65
K. C. Cannon,
81
H. Cao,
72
J. Cao,
82
C. D. Capano,
10
E. Capocasa,
39
F. Carbognani,
30
S. Caride,
83
M. F. Carney,
84
J. Casanueva Diaz,
28
C. Casentini,
32, 33
S. Caudill,
21, 14
M. Cavagli
`
a,
11
F. Cavalier,
28
R. Cavalieri,
30
G. Cella,
24
C. B. Cepeda,
1
P. Cerd
́
a-Dur
́
an,
85
G. Cerretani,
23, 24
E. Cesarini,
86, 33
S. J. Chamberlin,
63
M. Chan,
46
S. Chao,
87
P. Charlton,
88
E. Chase,
89
E. Chassande-Mottin,
39
D. Chatterjee,
21
K. Chatziioannou,
90
B. D. Cheeseboro,
41
H. Y. Chen,
91
X. Chen,
64
Y. Chen,
48
H.-P. Cheng,
5
H. Chia,
5
A. Chincarini,
59
A. Chiummo,
30
T. Chmiel,
84
H. S. Cho,
92
M. Cho,
75
J. H. Chow,
25
N. Christensen,
71, 66
Q. Chu,
64
A. J. K. Chua,
13
S. Chua,
70
A. K. W. Chung,
93
S. Chung,
64
G. Ciani,
5, 53, 54
R. Ciolfi,
94, 95
C. E. Cirelli,
51
A. Cirone,
80, 59
F. Clara,
47
J. A. Clark,
76
P. Clearwater,
96
F. Cleva,
66
C. Cocchieri,
11
E. Coccia,
17, 18
P.-F. Cohadon,
70
D. Cohen,
28
A. Colla,
97, 35
C. G. Collette,
98
L. R. Cominsky,
99
M. Constancio Jr.,
16
L. Conti,
54
S. J. Cooper,
58
P. Corban,
7
T. R. Corbitt,
2
I. Cordero-Carri
́
on,
100
K. R. Corley,
50
N. Cornish,
101
A. Corsi,
83
S. Cortese,
30
C. A. Costa,
16
M. W. Coughlin,
71, 1
S. B. Coughlin,
89
J.-P. Coulon,
66
S. T. Countryman,
50
P. Couvares,
1
P. B. Covas,
102
E. E. Cowan,
76
D. M. Coward,
64
M. J. Cowart,
7
D. C. Coyne,
1
R. Coyne,
83
J. D. E. Creighton,
21
T. D. Creighton,
103
J. Cripe,
2
S. G. Crowder,
104
T. J. Cullen,
29, 2
A. Cumming,
46
L. Cunningham,
46
E. Cuoco,
30
T. Dal Canton,
79
G. D
́
alya,
55
S. L. Danilishin,
22, 10
S. D’Antonio,
33
K. Danzmann,
22, 10
A. Dasgupta,
105
C. F. Da Silva Costa,
5
V. Dattilo,
30
I. Dave,
60
M. Davier,
28
D. Davis,
44
E. J. Daw,
106
B. Day,
76
S. De,
44
D. DeBra,
51
J. Degallaix,
26
M. De Laurentis,
17, 4
S. Del
́
eglise,
70
W. Del Pozzo,
58, 23, 24
N. Demos,
15
T. Denker,
10
T. Dent,
10
R. De Pietri,
107, 108
V. Dergachev,
38
R. De Rosa,
78, 4
R. T. DeRosa,
7
C. De Rossi,
26, 30
R. DeSalvo,
109
O. de Varona,
10
J. Devenson,
27
S. Dhurandhar,
19
M. C. D
́
ıaz,
103
L. Di Fiore,
4
M. Di Giovanni,
110, 95
T. Di Girolamo,
50, 78, 4
A. Di Lieto,
23, 24
S. Di Pace,
97, 35
I. Di Palma,
97, 35
F. Di Renzo,
23, 24
Z. Doctor,
91
V. Dolique,
26
F. Donovan,
15
K. L. Dooley,
11
S. Doravari,
10
I. Dorrington,
36
R. Douglas,
46
M. Dovale
́
Alvarez,
58
T. P. Downes,
21
M. Drago,
10
C. Dreissigacker,
10
J. C. Driggers,
47
Z. Du,
82
M. Ducrot,
8
P. Dupej,
46
S. E. Dwyer,
47
T. B. Edo,
106
M. C. Edwards,
71
A. Effler,
7
H.-B. Eggenstein,
38, 10
P. Ehrens,
1
J. Eichholz,
1
S. S. Eikenberry,
5
R. A. Eisenstein,
15
R. C. Essick,
15
D. Estevez,
8
Z. B. Etienne,
41
T. Etzel,
1
M. Evans,
15
T. M. Evans,
7
M. Factourovich,
50
V. Fafone,
32, 33, 17
H. Fair,
44
S. Fairhurst,
36
X. Fan,
82
S. Farinon,
59
B. Farr,
91
W. M. Farr,
58
E. J. Fauchon-Jones,
36
M. Favata,
111
M. Fays,
36
C. Fee,
84
H. Fehrmann,
10
J. Feicht,
1
M. M. Fejer,
51
A. Fernandez-Galiana,
15
I. Ferrante,
23, 24
E. C. Ferreira,
16
F. Ferrini,
30
F. Fidecaro,
23, 24
D. Finstad,
44
I. Fiori,
30
D. Fiorucci,
39
M. Fishbach,
91
R. P. Fisher,
44
M. Fitz-Axen,
45
R. Flaminio,
26, 112
M. Fletcher,
46
H. Fong,
90
J. A. Font,
85, 113
P. W. F. Forsyth,
25
S. S. Forsyth,
76
J.-D. Fournier,
66
S. Frasca,
97, 35
F. Frasconi,
24
Z. Frei,
55
A. Freise,
58
R. Frey,
69
V. Frey,
28
E. M. Fries,
1
P. Fritschel,
15
V. V. Frolov,
7
P. Fulda,
5
M. Fyffe,
7
H. Gabbard,
46
B. U. Gadre,
19
S. M. Gaebel,
58
J. R. Gair,
114
L. Gammaitoni,
42
M. R. Ganija,
72
S. G. Gaonkar,
19
C. Garcia-Quiros,
102
F. Garufi,
78, 4
B. Gateley,
47
S. Gaudio,
37
G. Gaur,
115
arXiv:1711.05578v1 [astro-ph.HE] 15 Nov 2017
V. Gayathri,
116
N. Gehrels,
79,
∗
G. Gemme,
59
E. Genin,
30
A. Gennai,
24
D. George,
12
J. George,
60
L. Gergely,
117
V. Germain,
8
S. Ghonge,
76
Abhirup Ghosh,
20
Archisman Ghosh,
20, 14
S. Ghosh,
65, 14, 21
J. A. Giaime,
2, 7
K. D. Giardina,
7
A. Giazotto,
24
K. Gill,
37
L. Glover,
109
E. Goetz,
118
R. Goetz,
5
S. Gomes,
36
B. Goncharov,
6
G. Gonz
́
alez,
2
J. M. Gonzalez Castro,
23, 24
A. Gopakumar,
119
M. L. Gorodetsky,
61
S. E. Gossan,
1
M. Gosselin,
30
R. Gouaty,
8
A. Grado,
120, 4
C. Graef,
46
M. Granata,
26
A. Grant,
46
S. Gras,
15
C. Gray,
47
G. Greco,
121, 122
A. C. Green,
58
E. M. Gretarsson,
37
P. Groot,
65
H. Grote,
10
S. Grunewald,
38
P. Gruning,
28
G. M. Guidi,
121, 122
X. Guo,
82
A. Gupta,
63
M. K. Gupta,
105
K. E. Gushwa,
1
E. K. Gustafson,
1
R. Gustafson,
118
O. Halim,
18, 17
B. R. Hall,
68
E. D. Hall,
15
E. Z. Hamilton,
36
G. Hammond,
46
M. Haney,
123
M. M. Hanke,
10
J. Hanks,
47
C. Hanna,
63
M. D. Hannam,
36
O. A. Hannuksela,
93
J. Hanson,
7
T. Hardwick,
2
J. Harms,
17, 18
G. M. Harry,
124
I. W. Harry,
38
M. J. Hart,
46
C.-J. Haster,
90
K. Haughian,
46
J. Healy,
57
A. Heidmann,
70
M. C. Heintze,
7
H. Heitmann,
66
P. Hello,
28
G. Hemming,
30
M. Hendry,
46
I. S. Heng,
46
J. Hennig,
46
A. W. Heptonstall,
1
M. Heurs,
10, 22
S. Hild,
46
T. Hinderer,
65
D. Hoak,
30
D. Hofman,
26
K. Holt,
7
D. E. Holz,
91
P. Hopkins,
36
C. Horst,
21
J. Hough,
46
E. A. Houston,
46
E. J. Howell,
64
A. Hreibi,
66
Y. M. Hu,
10
E. A. Huerta,
12
D. Huet,
28
B. Hughey,
37
S. Husa,
102
S. H. Huttner,
46
T. Huynh-Dinh,
7
N. Indik,
10
R. Inta,
83
G. Intini,
97, 35
H. N. Isa,
46
J.-M. Isac,
70
M. Isi,
1
B. R. Iyer,
20
K. Izumi,
47
T. Jacqmin,
70
K. Jani,
76
P. Jaranowski,
125
S. Jawahar,
62
F. Jim
́
enez-Forteza,
102
W. W. Johnson,
2
N. K. Johnson-McDaniel,
13
D. I. Jones,
126
R. Jones,
46
R. J. G. Jonker,
14
L. Ju,
64
J. Junker,
10
C. V. Kalaghatgi,
36
V. Kalogera,
89
B. Kamai,
1
S. Kandhasamy,
7
G. Kang,
40
J. B. Kanner,
1
S. J. Kapadia,
21
S. Karki,
69
K. S. Karvinen,
10
M. Kasprzack,
2
M. Katolik,
12
E. Katsavounidis,
15
W. Katzman,
7
S. Kaufer,
22
K. Kawabe,
47
F. K
́
ef
́
elian,
66
D. Keitel,
46
A. J. Kemball,
12
R. Kennedy,
106
C. Kent,
36
J. S. Key,
127
F. Y. Khalili,
61
I. Khan,
17, 33
S. Khan,
10
Z. Khan,
105
E. A. Khazanov,
128
N. Kijbunchoo,
25
Chunglee Kim,
129
J. C. Kim,
130
K. Kim,
93
W. Kim,
72
W. S. Kim,
131
Y.-M. Kim,
92
S. J. Kimbrell,
76
E. J. King,
72
P. J. King,
47
M. Kinley-Hanlon,
124
R. Kirchhoff,
10
J. S. Kissel,
47
L. Kleybolte,
34
S. Klimenko,
5
T. D. Knowles,
41
P. Koch,
10
S. M. Koehlenbeck,
10
S. Koley,
14
V. Kondrashov,
1
A. Kontos,
15
M. Korobko,
34
W. Z. Korth,
1
I. Kowalska,
73
D. B. Kozak,
1
C. Kr
̈
amer,
10
V. Kringel,
10
B. Krishnan,
10
A. Kr
́
olak,
132, 133
G. Kuehn,
10
P. Kumar,
90
R. Kumar,
105
S. Kumar,
20
L. Kuo,
87
A. Kutynia,
132
S. Kwang,
21
B. D. Lackey,
38
K. H. Lai,
93
M. Landry,
47
R. N. Lang,
134
J. Lange,
57
B. Lantz,
51
R. K. Lanza,
15
A. Lartaux-Vollard,
28
P. D. Lasky,
6
M. Laxen,
7
A. Lazzarini,
1
C. Lazzaro,
54
P. Leaci,
97, 35
S. Leavey,
46
C. H. Lee,
92
H. K. Lee,
135
H. M. Lee,
136
H. W. Lee,
130
K. Lee,
46
J. Lehmann,
10
A. Lenon,
41
M. Leonardi,
110, 95
N. Leroy,
28
N. Letendre,
8
Y. Levin,
6
T. G. F. Li,
93
S. D. Linker,
109
T. B. Littenberg,
137
J. Liu,
64
R. K. L. Lo,
93
N. A. Lockerbie,
62
L. T. London,
36
J. E. Lord,
44
M. Lorenzini,
17, 18
V. Loriette,
138
M. Lormand,
7
G. Losurdo,
24
J. D. Lough,
10
C. O. Lousto,
57
G. Lovelace,
29
H. L
̈
uck,
22, 10
D. Lumaca,
32, 33
A. P. Lundgren,
10
R. Lynch,
15
Y. Ma,
48
R. Macas,
36
S. Macfoy,
27
B. Machenschalk,
10
M. MacInnis,
15
D. M. Macleod,
36
I. Maga
̃
na Hernandez,
21
F. Maga
̃
na-Sandoval,
44
L. Maga
̃
na Zertuche,
44
R. M. Magee,
63
E. Majorana,
35
I. Maksimovic,
138
N. Man,
66
V. Mandic,
45
V. Mangano,
46
G. L. Mansell,
25
M. Manske,
21, 25
M. Mantovani,
30
F. Marchesoni,
52, 43
F. Marion,
8
S. M
́
arka,
50
Z. M
́
arka,
50
C. Markakis,
12
A. S. Markosyan,
51
A. Markowitz,
1
E. Maros,
1
A. Marquina,
100
F. Martelli,
121, 122
L. Martellini,
66
I. W. Martin,
46
R. M. Martin,
111
D. V. Martynov,
15
K. Mason,
15
E. Massera,
106
A. Masserot,
8
T. J. Massinger,
1
M. Masso-Reid,
46
S. Mastrogiovanni,
97, 35
A. Matas,
45
F. Matichard,
1, 15
L. Matone,
50
N. Mavalvala,
15
N. Mazumder,
68
R. McCarthy,
47
D. E. McClelland,
25
S. McCormick,
7
L. McCuller,
15
S. C. McGuire,
139
G. McIntyre,
1
J. McIver,
1
D. J. McManus,
25
L. McNeill,
6
T. McRae,
25
S. T. McWilliams,
41
D. Meacher,
63
G. D. Meadors,
38, 10
M. Mehmet,
10
J. Meidam,
14
E. Mejuto-Villa,
9
A. Melatos,
96
G. Mendell,
47
R. A. Mercer,
21
E. L. Merilh,
47
M. Merzougui,
66
S. Meshkov,
1
C. Messenger,
46
C. Messick,
63
R. Metzdorff,
70
P. M. Meyers,
45
H. Miao,
58
C. Michel,
26
H. Middleton,
58
E. E. Mikhailov,
140
L. Milano,
78, 4
A. L. Miller,
5, 97, 35
B. B. Miller,
89
J. Miller,
15
M. Millhouse,
101
M. C. Milovich-Goff,
109
O. Minazzoli,
66, 141
Y. Minenkov,
33
J. Ming,
38
C. Mishra,
142
S. Mitra,
19
V. P. Mitrofanov,
61
G. Mitselmakher,
5
R. Mittleman,
15
D. Moffa,
84
A. Moggi,
24
K. Mogushi,
11
M. Mohan,
30
S. R. P. Mohapatra,
15
M. Montani,
121, 122
C. J. Moore,
13
D. Moraru,
47
G. Moreno,
47
S. R. Morriss,
103
B. Mours,
8
C. M. Mow-Lowry,
58
G. Mueller,
5
A. W. Muir,
36
Arunava Mukherjee,
10
D. Mukherjee,
21
S. Mukherjee,
103
N. Mukund,
19
A. Mullavey,
7
J. Munch,
72
E. A. Mu
̃
niz,
44
M. Muratore,
37
P. G. Murray,
46
K. Napier,
76
I. Nardecchia,
32, 33
L. Naticchioni,
97, 35
R. K. Nayak,
143
J. Neilson,
109
G. Nelemans,
65, 14
T. J. N. Nelson,
7
M. Nery,
10
A. Neunzert,
118
L. Nevin,
1
J. M. Newport,
124
G. Newton,
46,
†
K. K. Y. Ng,
93
T. T. Nguyen,
25
D. Nichols,
65
A. B. Nielsen,
10
S. Nissanke,
65, 14
A. Nitz,
10
A. Noack,
10
F. Nocera,
30
D. Nolting,
7
C. North,
36
L. K. Nuttall,
36
J. Oberling,
47
G. D. O’Dea,
109
G. H. Ogin,
144
J. J. Oh,
131
S. H. Oh,
131
F. Ohme,
10
M. A. Okada,
16
M. Oliver,
102
P. Oppermann,
10
Richard J. Oram,
7
B. O’Reilly,
7
R. Ormiston,
45
L. F. Ortega,
5
R. O’Shaughnessy,
57
S. Ossokine,
38
D. J. Ottaway,
72
H. Overmier,
7
B. J. Owen,
83
A. E. Pace,
63
J. Page,
137
M. A. Page,
64
A. Pai,
116, 145
S. A. Pai,
60
J. R. Palamos,
69
O. Palashov,
128
C. Palomba,
35
A. Pal-Singh,
34
Howard Pan,
87
Huang-Wei Pan,
87
B. Pang,
48
P. T. H. Pang,
93
C. Pankow,
89
F. Pannarale,
36
B. C. Pant,
60
F. Paoletti,
24
A. Paoli,
30
M. A. Papa,
38, 21, 10
A. Parida,
19
W. Parker,
7
D. Pascucci,
46
A. Pasqualetti,
30
R. Passaquieti,
23, 24
D. Passuello,
24
M. Patil,
133
B. Patricelli,
146, 24
B. L. Pearlstone,
46
M. Pedraza,
1
R. Pedurand,
26, 147
L. Pekowsky,
44
A. Pele,
7
S. Penn,
148
C. J. Perez,
47
A. Perreca,
1, 110, 95
L. M. Perri,
89
H. P. Pfeiffer,
90, 38
M. Phelps,
46
O. J. Piccinni,
97, 35
M. Pichot,
66
F. Piergiovanni,
121, 122
V. Pierro,
9
2
G. Pillant,
30
L. Pinard,
26
I. M. Pinto,
9
M. Pirello,
47
M. Pitkin,
46
M. Poe,
21
R. Poggiani,
23, 24
P. Popolizio,
30
E. K. Porter,
39
A. Post,
10
J. Powell,
46, 149
J. Prasad,
19
J. W. W. Pratt,
37
G. Pratten,
102
V. Predoi,
36
T. Prestegard,
21
M. Prijatelj,
10
M. Principe,
9
S. Privitera,
38
G. A. Prodi,
110, 95
L. G. Prokhorov,
61
O. Puncken,
10
M. Punturo,
43
P. Puppo,
35
M. P
̈
urrer,
38
H. Qi,
21
V. Quetschke,
103
E. A. Quintero,
1
R. Quitzow-James,
69
F. J. Raab,
47
D. S. Rabeling,
25
H. Radkins,
47
P. Raffai,
55
S. Raja,
60
C. Rajan,
60
B. Rajbhandari,
83
M. Rakhmanov,
103
K. E. Ramirez,
103
A. Ramos-Buades,
102
P. Rapagnani,
97, 35
V. Raymond,
38
M. Razzano,
23, 24
J. Read,
29
T. Regimbau,
66
L. Rei,
59
S. Reid,
62
D. H. Reitze,
1, 5
W. Ren,
12
S. D. Reyes,
44
F. Ricci,
97, 35
P. M. Ricker,
12
S. Rieger,
10
K. Riles,
118
M. Rizzo,
57
N. A. Robertson,
1, 46
R. Robie,
46
F. Robinet,
28
A. Rocchi,
33
L. Rolland,
8
J. G. Rollins,
1
V. J. Roma,
69
R. Romano,
3, 4
C. L. Romel,
47
J. H. Romie,
7
D. Rosi
́
nska,
150, 56
M. P. Ross,
151
S. Rowan,
46
A. R
̈
udiger,
10
P. Ruggi,
30
G. Rutins,
27
K. Ryan,
47
S. Sachdev,
1
T. Sadecki,
47
L. Sadeghian,
21
M. Sakellariadou,
152
L. Salconi,
30
M. Saleem,
116
F. Salemi,
10
A. Samajdar,
143
L. Sammut,
6
L. M. Sampson,
89
E. J. Sanchez,
1
L. E. Sanchez,
1
N. Sanchis-Gual,
85
V. Sandberg,
47
J. R. Sanders,
44
B. Sassolas,
26
B. S. Sathyaprakash,
63, 36
P. R. Saulson,
44
O. Sauter,
118
R. L. Savage,
47
A. Sawadsky,
34
P. Schale,
69
M. Scheel,
48
J. Scheuer,
89
J. Schmidt,
10
P. Schmidt,
1, 65
R. Schnabel,
34
R. M. S. Schofield,
69
A. Sch
̈
onbeck,
34
E. Schreiber,
10
D. Schuette,
10, 22
B. W. Schulte,
10
B. F. Schutz,
36, 10
S. G. Schwalbe,
37
J. Scott,
46
S. M. Scott,
25
E. Seidel,
12
D. Sellers,
7
A. S. Sengupta,
153
D. Sentenac,
30
V. Sequino,
32, 33, 17
A. Sergeev,
128
D. A. Shaddock,
25
T. J. Shaffer,
47
A. A. Shah,
137
M. S. Shahriar,
89
M. B. Shaner,
109
L. Shao,
38
B. Shapiro,
51
P. Shawhan,
75
A. Sheperd,
21
D. H. Shoemaker,
15
D. M. Shoemaker,
76
K. Siellez,
76
X. Siemens,
21
M. Sieniawska,
56
D. Sigg,
47
A. D. Silva,
16
L. P. Singer,
79
A. Singh,
38, 10, 22
A. Singhal,
17, 35
A. M. Sintes,
102
B. J. J. Slagmolen,
25
B. Smith,
7
J. R. Smith,
29
R. J. E. Smith,
1, 6
S. Somala,
154
E. J. Son,
131
J. A. Sonnenberg,
21
B. Sorazu,
46
F. Sorrentino,
59
T. Souradeep,
19
A. P. Spencer,
46
A. K. Srivastava,
105
K. Staats,
37
A. Staley,
50
M. Steinke,
10
J. Steinlechner,
34, 46
S. Steinlechner,
34
D. Steinmeyer,
10
S. P. Stevenson,
58, 149
R. Stone,
103
D. J. Stops,
58
K. A. Strain,
46
G. Stratta,
121, 122
S. E. Strigin,
61
A. Strunk,
47
R. Sturani,
155
A. L. Stuver,
7
T. Z. Summerscales,
156
L. Sun,
96
S. Sunil,
105
J. Suresh,
19
P. J. Sutton,
36
B. L. Swinkels,
30
M. J. Szczepa
́
nczyk,
37
M. Tacca,
14
S. C. Tait,
46
C. Talbot,
6
D. Talukder,
69
D. B. Tanner,
5
M. T
́
apai,
117
A. Taracchini,
38
J. D. Tasson,
71
J. A. Taylor,
137
R. Taylor,
1
S. V. Tewari,
148
T. Theeg,
10
F. Thies,
10
E. G. Thomas,
58
M. Thomas,
7
P. Thomas,
47
K. A. Thorne,
7
E. Thrane,
6
S. Tiwari,
17, 95
V. Tiwari,
36
K. V. Tokmakov,
62
K. Toland,
46
M. Tonelli,
23, 24
Z. Tornasi,
46
A. Torres-Forn
́
e,
85
C. I. Torrie,
1
D. T
̈
oyr
̈
a,
58
F. Travasso,
30, 43
G. Traylor,
7
J. Trinastic,
5
M. C. Tringali,
110, 95
L. Trozzo,
157, 24
K. W. Tsang,
14
M. Tse,
15
R. Tso,
1
L. Tsukada,
81
D. Tsuna,
81
D. Tuyenbayev,
103
K. Ueno,
21
D. Ugolini,
158
C. S. Unnikrishnan,
119
A. L. Urban,
1
S. A. Usman,
36
H. Vahlbruch,
22
G. Vajente,
1
G. Valdes,
2
N. van Bakel,
14
M. van Beuzekom,
14
J. F. J. van den Brand,
74, 14
C. Van Den Broeck,
14, 159
D. C. Vander-Hyde,
44
L. van der Schaaf,
14
J. V. van Heijningen,
14
A. A. van Veggel,
46
M. Vardaro,
53, 54
V. Varma,
48
S. Vass,
1
M. Vas
́
uth,
49
A. Vecchio,
58
G. Vedovato,
54
J. Veitch,
46
P. J. Veitch,
72
K. Venkateswara,
151
G. Venugopalan,
1
D. Verkindt,
8
F. Vetrano,
121, 122
A. Vicer
́
e,
121, 122
A. D. Viets,
21
S. Vinciguerra,
58
D. J. Vine,
27
J.-Y. Vinet,
66
S. Vitale,
15
T. Vo,
44
H. Vocca,
42, 43
C. Vorvick,
47
S. P. Vyatchanin,
61
A. R. Wade,
1
L. E. Wade,
84
M. Wade,
84
R. Walet,
14
M. Walker,
29
L. Wallace,
1
S. Walsh,
38, 10, 21
G. Wang,
17, 122
H. Wang,
58
J. Z. Wang,
63
W. H. Wang,
103
Y. F. Wang,
93
R. L. Ward,
25
J. Warner,
47
M. Was,
8
J. Watchi,
98
B. Weaver,
47
L.-W. Wei,
10, 22
M. Weinert,
10
A. J. Weinstein,
1
R. Weiss,
15
L. Wen,
64
E. K. Wessel,
12
P. Weßels,
10
J. Westerweck,
10
T. Westphal,
10
K. Wette,
25
J. T. Whelan,
57
B. F. Whiting,
5
C. Whittle,
6
D. Wilken,
10
D. Williams,
46
R. D. Williams,
1
A. R. Williamson,
65
J. L. Willis,
1, 160
B. Willke,
22, 10
M. H. Wimmer,
10
W. Winkler,
10
C. C. Wipf,
1
H. Wittel,
10, 22
G. Woan,
46
J. Woehler,
10
J. Wofford,
57
K. W. K. Wong,
93
J. Worden,
47
J. L. Wright,
46
D. S. Wu,
10
D. M. Wysocki,
57
S. Xiao,
1
H. Yamamoto,
1
C. C. Yancey,
75
L. Yang,
161
M. J. Yap,
25
M. Yazback,
5
Hang Yu,
15
Haocun Yu,
15
M. Yvert,
8
A. Zadro
̇
zny,
132
M. Zanolin,
37
T. Zelenova,
30
J.-P. Zendri,
54
M. Zevin,
89
L. Zhang,
1
M. Zhang,
140
T. Zhang,
46
Y.-H. Zhang,
57
C. Zhao,
64
M. Zhou,
89
Z. Zhou,
89
S. J. Zhu,
38, 10
X. J. Zhu,
6
A. B. Zimmerman,
90
M. E. Zucker,
1, 15
and J. Zweizig
1
LIGO Scientific Collaboration and Virgo Collaboration
1
LIGO, California Institute of Technology, Pasadena, CA 91125, USA
2
Louisiana State University, Baton Rouge, LA 70803, USA
3
Universit`a 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, FL 32611, USA
6
OzGrav, School of Physics & Astronomy, Monash University, Clayton 3800, Victoria, Australia
7
LIGO Livingston Observatory, Livingston, LA 70754, USA
8
Laboratoire d’Annecy-le-Vieux de Physique des Particules (LAPP), Universit ́e Savoie Mont Blanc, CNRS/IN2P3, F-74941 Annecy,
France
3
9
University of Sannio at Benevento, I-82100 Benevento, Italy and INFN, Sezione di Napoli, I-80100 Napoli, Italy
10
Max Planck Institute for Gravitational Physics (Albert Einstein Institute), D-30167 Hannover, Germany
11
The University of Mississippi, University, MS 38677, USA
12
NCSA, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
13
University of Cambridge, Cambridge CB2 1TN, United Kingdom
14
Nikhef, Science Park, 1098 XG Amsterdam, The Netherlands
15
LIGO, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
16
Instituto Nacional de Pesquisas Espaciais, 12227-010 S ̃ao Jos ́e dos Campos, S ̃ao Paulo, Brazil
17
Gran Sasso Science Institute (GSSI), I-67100 L’Aquila, Italy
18
INFN, Laboratori Nazionali del Gran Sasso, I-67100 Assergi, Italy
19
Inter-University Centre for Astronomy and Astrophysics, Pune 411007, India
20
International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru 560089, India
21
University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
22
Leibniz Universit ̈at Hannover, D-30167 Hannover, Germany
23
Universit`a di Pisa, I-56127 Pisa, Italy
24
INFN, Sezione di Pisa, I-56127 Pisa, Italy
25
OzGrav, Australian National University, Canberra, Australian Capital Territory 0200, Australia
26
Laboratoire des Mat ́eriaux Avanc ́es (LMA), CNRS/IN2P3, F-69622 Villeurbanne, France
27
SUPA, University of the West of Scotland, Paisley PA1 2BE, United Kingdom
28
LAL, Univ. Paris-Sud, CNRS/IN2P3, Universit ́e Paris-Saclay, F-91898 Orsay, France
29
California State University Fullerton, Fullerton, CA 92831, USA
30
European Gravitational Observatory (EGO), I-56021 Cascina, Pisa, Italy
31
Chennai Mathematical Institute, Chennai 603103, India
32
Universit`a di Roma Tor Vergata, I-00133 Roma, Italy
33
INFN, Sezione di Roma Tor Vergata, I-00133 Roma, Italy
34
Universit ̈at Hamburg, D-22761 Hamburg, Germany
35
INFN, Sezione di Roma, I-00185 Roma, Italy
36
Cardiff University, Cardiff CF24 3AA, United Kingdom
37
Embry-Riddle Aeronautical University, Prescott, AZ 86301, USA
38
Max Planck Institute for Gravitational Physics (Albert Einstein Institute), D-14476 Potsdam-Golm, Germany
39
APC, AstroParticule et Cosmologie, Universit ́e Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris, Sorbonne Paris Cit ́e,
F-75205 Paris Cedex 13, France
40
Korea Institute of Science and Technology Information, Daejeon 34141, Korea
41
West Virginia University, Morgantown, WV 26506, USA
42
Universit`a di Perugia, I-06123 Perugia, Italy
43
INFN, Sezione di Perugia, I-06123 Perugia, Italy
44
Syracuse University, Syracuse, NY 13244, USA
45
University of Minnesota, Minneapolis, MN 55455, USA
46
SUPA, University of Glasgow, Glasgow G12 8QQ, United Kingdom
47
LIGO Hanford Observatory, Richland, WA 99352, USA
48
Caltech CaRT, Pasadena, CA 91125, USA
49
Wigner RCP, RMKI, H-1121 Budapest, Konkoly Thege Mikl ́os ́ut 29-33, Hungary
50
Columbia University, New York, NY 10027, USA
51
Stanford University, Stanford, CA 94305, USA
52
Universit`a di Camerino, Dipartimento di Fisica, I-62032 Camerino, Italy
53
Universit`a di Padova, Dipartimento di Fisica e Astronomia, I-35131 Padova, Italy
54
INFN, Sezione di Padova, I-35131 Padova, Italy
55
Institute of Physics, E ̈otv ̈os University, P ́azm ́any P. s. 1/A, Budapest 1117, Hungary
56
Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, 00-716, Warsaw, Poland
57
Rochester Institute of Technology, Rochester, NY 14623, USA
58
University of Birmingham, Birmingham B15 2TT, United Kingdom
59
INFN, Sezione di Genova, I-16146 Genova, Italy
60
RRCAT, Indore MP 452013, India
61
Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
4
62
SUPA, University of Strathclyde, Glasgow G1 1XQ, United Kingdom
63
The Pennsylvania State University, University Park, PA 16802, USA
64
OzGrav, University of Western Australia, Crawley, Western Australia 6009, Australia
65
Department of Astrophysics/IMAPP, Radboud University Nijmegen, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands
66
Artemis, Universit ́e Cˆote d’Azur, Observatoire Cˆote d’Azur, CNRS, CS 34229, F-06304 Nice Cedex 4, France
67
Institut FOTON, CNRS, Universit ́e de Rennes 1, F-35042 Rennes, France
68
Washington State University, Pullman, WA 99164, USA
69
University of Oregon, Eugene, OR 97403, USA
70
Laboratoire Kastler Brossel, UPMC-Sorbonne Universit ́es, CNRS, ENS-PSL Research University, Coll`ege de France, F-75005 Paris,
France
71
Carleton College, Northfield, MN 55057, USA
72
OzGrav, University of Adelaide, Adelaide, South Australia 5005, Australia
73
Astronomical Observatory Warsaw University, 00-478 Warsaw, Poland
74
VU University Amsterdam, 1081 HV Amsterdam, The Netherlands
75
University of Maryland, College Park, MD 20742, USA
76
School of Physics, Georgia Institute of Technology, Atlanta, GA 30332, USA
77
Universit ́e Claude Bernard Lyon 1, F-69622 Villeurbanne, France
78
Universit`a di Napoli ‘Federico II,’ Complesso Universitario di Monte S.Angelo, I-80126 Napoli, Italy
79
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
80
Dipartimento di Fisica, Universit`a degli Studi di Genova, I-16146 Genova, Italy
81
RESCEU, University of Tokyo, Tokyo, 113-0033, Japan.
82
Tsinghua University, Beijing 100084, China
83
Texas Tech University, Lubbock, TX 79409, USA
84
Kenyon College, Gambier, OH 43022, USA
85
Departamento de Astronom ́ıa y Astrof ́ısica, Universitat de Val`encia, E-46100 Burjassot, Val`encia, Spain
86
Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, I-00184 Roma, Italy
87
National Tsing Hua University, Hsinchu City, 30013 Taiwan, Republic of China
88
Charles Sturt University, Wagga Wagga, New South Wales 2678, Australia
89
Center for Interdisciplinary Exploration & Research in Astrophysics (CIERA), Northwestern University, Evanston, IL 60208, USA
90
Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario M5S 3H8, Canada
91
University of Chicago, Chicago, IL 60637, USA
92
Pusan National University, Busan 46241, Korea
93
The Chinese University of Hong Kong, Shatin, NT, Hong Kong
94
INAF, Osservatorio Astronomico di Padova, I-35122 Padova, Italy
95
INFN, Trento Institute for Fundamental Physics and Applications, I-38123 Povo, Trento, Italy
96
OzGrav, University of Melbourne, Parkville, Victoria 3010, Australia
97
Universit`a di Roma ‘La Sapienza,’ I-00185 Roma, Italy
98
Universit ́e Libre de Bruxelles, Brussels 1050, Belgium
99
Sonoma State University, Rohnert Park, CA 94928, USA
100
Departamento de Matem ́aticas, Universitat de Val`encia, E-46100 Burjassot, Val`encia, Spain
101
Montana State University, Bozeman, MT 59717, USA
102
Universitat de les Illes Balears, IAC3—IEEC, E-07122 Palma de Mallorca, Spain
103
The University of Texas Rio Grande Valley, Brownsville, TX 78520, USA
104
Bellevue College, Bellevue, WA 98007, USA
105
Institute for Plasma Research, Bhat, Gandhinagar 382428, India
106
The University of Sheffield, Sheffield S10 2TN, United Kingdom
107
Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Universit`a di Parma, I-43124 Parma, Italy
108
INFN, Sezione di Milano Bicocca, Gruppo Collegato di Parma, I-43124 Parma, Italy
109
California State University, Los Angeles, 5151 State University Dr, Los Angeles, CA 90032, USA
110
Universit`a di Trento, Dipartimento di Fisica, I-38123 Povo, Trento, Italy
111
Montclair State University, Montclair, NJ 07043, USA
112
National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
113
Observatori Astron`omic, Universitat de Val`encia, E-46980 Paterna, Val`encia, Spain
114
School of Mathematics, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
5
115
University and Institute of Advanced Research, Koba Institutional Area, Gandhinagar Gujarat 382007, India
116
IISER-TVM, CET Campus, Trivandrum Kerala 695016, India
117
University of Szeged, D ́om t ́er 9, Szeged 6720, Hungary
118
University of Michigan, Ann Arbor, MI 48109, USA
119
Tata Institute of Fundamental Research, Mumbai 400005, India
120
INAF, Osservatorio Astronomico di Capodimonte, I-80131, Napoli, Italy
121
Universit`a degli Studi di Urbino ‘Carlo Bo,’ I-61029 Urbino, Italy
122
INFN, Sezione di Firenze, I-50019 Sesto Fiorentino, Firenze, Italy
123
Physik-Institut, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
124
American University, Washington, D.C. 20016, USA
125
University of Bia lystok, 15-424 Bia lystok, Poland
126
University of Southampton, Southampton SO17 1BJ, United Kingdom
127
University of Washington Bothell, 18115 Campus Way NE, Bothell, WA 98011, USA
128
Institute of Applied Physics, Nizhny Novgorod, 603950, Russia
129
Korea Astronomy and Space Science Institute, Daejeon 34055, Korea
130
Inje University Gimhae, South Gyeongsang 50834, Korea
131
National Institute for Mathematical Sciences, Daejeon 34047, Korea
132
NCBJ, 05-400
́
Swierk-Otwock, Poland
133
Institute of Mathematics, Polish Academy of Sciences, 00656 Warsaw, Poland
134
Hillsdale College, Hillsdale, MI 49242, USA
135
Hanyang University, Seoul 04763, Korea
136
Seoul National University, Seoul 08826, Korea
137
NASA Marshall Space Flight Center, Huntsville, AL 35811, USA
138
ESPCI, CNRS, F-75005 Paris, France
139
Southern University and A&M College, Baton Rouge, LA 70813, USA
140
College of William and Mary, Williamsburg, VA 23187, USA
141
Centre Scientifique de Monaco, 8 quai Antoine Ier, MC-98000, Monaco
142
Indian Institute of Technology Madras, Chennai 600036, India
143
IISER-Kolkata, Mohanpur, West Bengal 741252, India
144
Whitman College, 345 Boyer Avenue, Walla Walla, WA 99362 USA
145
Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400076, India
146
Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
147
Universit ́e de Lyon, F-69361 Lyon, France
148
Hobart and William Smith Colleges, Geneva, NY 14456, USA
149
OzGrav, Swinburne University of Technology, Hawthorn VIC 3122, Australia
150
Janusz Gil Institute of Astronomy, University of Zielona G ́ora, 65-265 Zielona G ́ora, Poland
151
University of Washington, Seattle, WA 98195, USA
152
King’s College London, University of London, London WC2R 2LS, United Kingdom
153
Indian Institute of Technology, Gandhinagar Ahmedabad Gujarat 382424, India
154
Indian Institute of Technology Hyderabad, Sangareddy, Khandi, Telangana 502285, India
155
International Institute of Physics, Universidade Federal do Rio Grande do Norte, Natal RN 59078-970, Brazil
156
Andrews University, Berrien Springs, MI 49104, USA
157
Universit`a di Siena, I-53100 Siena, Italy
158
Trinity University, San Antonio, TX 78212, USA
159
Van Swinderen Institute for Particle Physics and Gravity, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
160
Abilene Christian University, Abilene, TX 79699, USA
161
Colorado State University, Fort Collins, CO 80523, USA
ABSTRACT
On June 8, 2017 at 02:01:16.49 UTC, a gravitational-wave signal from the merger of two stellar-mass black holes was
observed by the two Advanced LIGO detectors with a network signal-to-noise ratio of 13. This system is the lightest
black hole binary so far observed, with component masses 12
+7
−
2
M
and 7
+2
−
2
M
(90% credible intervals). These lie in
the range of measured black hole masses in low-mass X-ray binaries, thus allowing us to compare black holes detected
through gravitational waves with electromagnetic observations. The source’s luminosity distance is 340
+140
−
140
Mpc,
6
corresponding to redshift 0
.
07
+0
.
03
−
0
.
03
. We verify that the signal waveform is consistent with the predictions of general
relativity.
∗
Deceased, February 2017.
†
Deceased, December 2016.
7