Astrophysical Implications of the Binary Black-Hole Merger GW150914
B. Abbott,R. Abbott,T. D. Abbott,M. R. Abernathy,F. Acernese,K. Ackley,C. Adams,T. Adams,P. Addesso,R. Adhikari,V. B. Adya,C. Affeldt,M. Agathos,K. Agatsuma,N. Aggarwal,O. D. Aguiar,L. Aiello,A. Ain,P. Ajith,B. Allen,A. Allocca,P. A. Altin,S. Anderson,Warren G. Anderson,K. Arai,M. C. Araya,C. C. Arceneaux,J. S. Areeda,N. Arnaud,K. G. Arun,S. Ascenzi,G. Ashton,M. Ast,S. M. Aston,P. Astone,P. Aufmuth,C. Aulbert,S. Babak,P. Bacon,Michael Bader,P. T. Baker,F. Baldaccini,G. Ballardin,S. Ballmer,J. C. Barayoga,S. E. Barclay,B. Barish,D. Barker,F. Barone,B. Barr,L. Barsotti,M. Barsuglia,D. Barta,J. Bartlett,I. Bartos,R. Bassiri,A. Basti,J. C. Batch,C. Baune,V. Bavigadda,M. Bazzan,B. Behnke,M. Bejger,C. Belczynski,A. S. Bell,C. Bell,B. K. Berger,J. Bergman,G. Bergmann,C. P. L. Berry,D. Bersanetti,A. Bertolini,J. Betzwieser,S. Bhagwat,R. Bhandare,I. A. Bilenko,G. Billingsley,J. Birch,R. Birney,S. Biscans,A. Bisht,M. Bitossi,C. Biwer,M. A. Bizouard,J. K. Blackburn,C. D. Blair,David Blair,R. M. Blair,S. Bloemen,O. Bock,T. P. Bodiya,M. Boer,G. Bogaert,C. Bogan,A. Bohe,P. Bojtos,C. Bond,F. Bondu,R. Bonnand,B. A. Boom,R. Bork,V. Boschi,S. Bose,Y. Bouffanais,A. Bozzi,C. Bradaschia,P. R. Brady,V. B. Braginsky,M. Branchesi,J. Brau,T. Briant,A. Brillet,M. Brinkmann,V. Brisson,P. Brockill,A. F. Brooks,D. A. Brown,D. D. Brown,N. M. Brown,C. C. Buchanan,A. Buikema,T. Bulik,H. J. Bulten,A. Buonanno,D. Buskulic,C. Buy,Robert L. Byer,L. Cadonati,G. Cagnoli,C. Cahillane,J. Calderón Bustillo,T. Callister,E. Calloni,J. B. Camp,K. C. Cannon,Junwei Cao,C. D. Capano,E. Capocasa,F. Carbognani,S. Caride,J. Casanueva Diaz,C. Casentini,S. Caudill,M. Cavaglià,F. Cavalier,R. Cavalieri,G. Cella,C. Cepeda,L. Cerboni Baiardi,G. Cerretani,E. Cesarini,R. Chakraborty,T. Chalermsongsak,S. J. Chamberlin,M. Chan,S. Chao,P. Charlton,E. Chassande-Mottin,Hsiao-Wen Chen,Y. Chen,C. Cheng,Andrea Chincarini,A. Chiummo,H. S. Cho,M. Cho,Jong H. Chow,N. Christensen,Q. Chu,S. Chua,S. Chung,G. Ciani,F. Clara,J. A. Clark,F. Cleva,E. Coccia,P.-F. Cohadon,A. Colla,Christophe Collette,L. R. Cominsky,M. Constancio,A. Conte,L. Conti,Deborah J. Cook,T. R. Corbitt,Neil J. Cornish,A. Corsi,S. Cortese,C. A. Costa,M. W. Coughlin,S. B. Coughlin,J. P. Coulon,S. T. Countryman,P. Couvares,E. E. Cowan,David Coward,M. J. Cowart,D. C. Coyne,R. Coyne,K. Craig,Jolien D. E. Creighton,J. Cripe,S. G. Crowder,A. Cumming,L. Cunningham,E. Cuoco,T. Dal Canton,S. L. Danilishin,S. D'Antonio,Karsten Danzmann,N. S. Darman,V. Dattilo,I. Dave,H. Daveloza,M. Davier,G. S. Davies,E. J. Daw,R. Day,D. DeBra,G. Debreczeni,J. Degallaix,M. De Laurentis,S. Deléglise,W. Del Pozzo,T. Denker,T. Dent,H. Dereli,V. Dergachev,R. T. Derosa,R. Desalvo,S. Dhurandhar,M. Díaz,L. Di Fiore,M. Di Giovanni,A. Di Lieto,S. Di Pace,I. Di Palma,A. Di Virgilio,G. Dojcinoski,V. Dolique,F. Donovan,K. L. Dooley,S. Doravari,R. Douglas,T. P. Downes,M. Drago,R. W. P. Drever,J. C. Driggers,Zhihui Du,M. Ducrot,S. E. Dwyer,T. B. Edo,M. C. Edwards,A. Effler,H. B. Eggenstein,P. Ehrens,J. Eichholz,S. S. Eikenberry,W. Engels,R. C. Essick,T. Etzel,M. Evans,T. Evans,R. Everett,M. Factourovich,V. Fafone,H. Fair,S. Fairhurst,X. Fan,Q. Fang,S. Farinon,B. Farr,W. M. Farr,M. Favata,M. Fays,H. Fehrmann,M. M. Fejer,I. Ferrante,E. C. Ferreira,F. Ferrini,F. Fidecaro,I. Fiori,D. Fiorucci,Rebecca Fisher,R. Flaminio,M. Fletcher,J. D. Fournier,S. Franco,S. Frasca,F. Frasconi,Z. Frei,A. Freise,R. Frey,V. Frey,T. T. Fricke,P. Fritschel,V. V. Frolov,P. Fulda,M. Fyffe,H. A G Gabbard,J. R. Gair,L. Gammaitoni,S. G. Gaonkar,F. Garufi,A. Gatto,G. Gaur,N. Gehrels,G. Gemme,B. Gendre,E. Genin,A. Gennai,J. George,László Á. Gergely,V. Germain,Archisman Ghosh,S. Ghosh,J. A. Giaime,K. D. Giardina,A. Giazotto,K. Gill,A. Glaefke,E. Goetz,R. Goetz,L. Gondan,G. González,J. M. Gonzalez Castro,A. Gopakumar,N. A. Gordon,M. L. Gorodetsky,S. E. Gossan,M. Gosselin,R. Gouaty,C. Graef,P. B. Graff,M. Granata,A. Grant,S. Gras,C. Gray,G. Greco,Andrew Green,P. Groot,H. Grote,S. Grunewald,G. M. Guidi,X. Guo,A. Gupta,M. K. Gupta,K. E. Gushwa,E. K. Gustafson,R. Gustafson,J. J. Hacker,B. R. Hall,E. D. Hall,G. Hammond,M. Haney,M. M. Hanke,J. Hanks,C. Hanna,Mark Hannam,J. Hanson,T. Hardwick,J. Harms,G. M. Harry,I. W. Harry,M. J. Hart,M. T. Hartman,C. J. Haster,K. Haughian,A. Heidmann,M. C. Heintze,H. Heitmann,P. Hello,G. Hemming,M. Hendry,I. S. Heng,J. Hennig,A. Heptonstall,M. Heurs,S. Hild,D. Hoak,K. A. Hodge,D. Hofman,S. E. Hollitt,K. Holt,Daniel E. Holz,P. Hopkins,D. J. Hosken,J. Hough,E. A. Houston,E. J. Howell,Y. M. Hu,S. Huang,E. A. Huerta,D. Huet,B. Hughey,S. Husa,S. H. Huttner,T. Huynh-Dinh,A. Idrisy,N. Indik,D. R. Ingram,R. Inta,H. N. Isa,J. M. Isac,M. Isi,G. Islas,T. Isogai,B. R. Iyer,K. Izumi,T. Jacqmin,H. Jang,K. Jani,P. Jaranowski,S. Jawahar,F. Jiménez-Forteza,W. W. Johnson,D. I. Jones,R. Jones,R. J. G. Jonker,L. Ju,K. Haris,C. V. Kalaghatgi,V. Kalogera,S. Kandhasamy,G. Kang,J. B. Kanner,S. Karki,M. Kasprzack,E. Katsavounidis,W. Katzman,S. Kaufer,T. Kaur,K. Kawabe,F. Kawazoe,F. Kéfélian,M. S. Kehl,D. Keitel,D. B. Kelley,W. Kells,R. Kennedy,J. S. Key,A. Khalaidovski,F. Y. Khalili,I. Khan,S. Khan,Z. Khan,Efim A. Khazanov,N. Kijbunchoo,C. Kim, J. Kim,K. Kim,Nam Gyu Kim,N. Kim,Y. M. Kim, E. J. King, P. J. King,D. L. Kinzel,J. S. Kissel, L. Kleybolte, S. Klimenko, S. M. Koehlenbeck,K. Kokeyama, S. Koley, V. Kondrashov, A. Kontos, M. Korobko, W. Z. Korth, I. Kowalska,D. Kozak, V. Kringel,B. Krishnan, A. Królak,C. Krueger, G. Kuehn, P. Kumar, L. Kuo, A. Kutynia, B. D. Lackey, M. Landry, J. Lange, B. Lantz, P. D. Lasky, A. Lazzarini, C. Lazzaro, P. Leaci, S. Leavey, E. O. Lebigot, C. H. Lee, Hyun Kyu Lee, H. M. Lee, K. Lee, A. Lenon, M. Leonardi, J. R. Leong, N. Leroy, N. Letendre, Y. Levin,B. Levine,Tjonnie G. F. Li, A. Libson, T. B. Littenberg, N. A. Lockerbie,J. Logue, A. L. Lombardi, J. E. Lord, M. Lorenzini, V. Loriette, M. Lormand, G. Losurdo,J. Lough, H. Lück,A. P. Lundgren,J. Luo,R. Lynch,Y. Ma,T. Macdonald, B. Machenschalk, M. MacInnis, D. M. Macleod, F. Magaña-Sandoval,R. M. Magee,M. Mageswaran,E. Majorana, I. Maksimovic, V. Malvezzi, N. Man,Ilya Mandel, V. Mandic,V. Mangano,G. L. Mansell,M. Manske,M. Mantovani,F. Marchesoni, F. Marion,S. Márka, Z. Márka,A. Markosyan,E. Maros,F. Martelli,L. Martellini,I. W. Martin,R. M. Martin,D. V. Martynov,J. N. Marx,K. Mason, A. Masserot, T. J. Massinger, M. Masso-Reid,F. Matichard,L. Matone,N. Mavalvala,N. Mazumder,G. Mazzolo, R. McCarthy,D. E. McClelland,S. McCormick, S. C. McGuire, G. McIntyre,J. McIver, D. J. McManus, S. T. McWilliams,D. Meacher,G. D. Meadors,J. Meidam,A. Melatos, G. Mendell, D. Mendoza-Gandara, R. A. Mercer, E. L. Merilh, M. Merzougui, S. Meshkov,C. Messenger,C. Messick,P. M. Meyers,F. Mezzani,H. Miao,C. Michel,H. Middleton,Eugeniy E. Mikhailov,L. Milano,J. Miller,M. Millhouse,Y. Minenkov,J. Ming,S. Mirshekari,C. Mishra,Subhasish Mitra,V. P. Mitrofanov,G. Mitselmakher,R. Mittleman,A. Moggi,M. Mohan,S. R. P. Mohapatra,M. Montani,B. C. Moore,C. J. Moore,D. Moraru,G. Moreno,S. R. Morriss,K. Mossavi,B. Mours,C. M. Mow-Lowry,C. L. Mueller,G. Mueller,A. W. Muir,Arunava Mukherjee,D. Mukherjee,S. Mukherjee,N. Mukund,A. Mullavey,J. Munch,D. J. Murphy,P. G. Murray,A. Mytidis,I. Nardecchia,L. Naticchioni,R. K. Nayak,V. Necula,K. Nedkova,G. Nelemans,M. Neri,A. Neunzert,G. Newton,T. T. Nguyen,A. B. Nielsen,S. Nissanke,A. Nitz,F. Nocera,D. Nolting,M. E. Normandin,L. K. Nuttall,J. Oberling,E. Ochsner,J. O'Dell,E. Oelker,G. H. Ogin,J. J. Oh,Seog Oh,F. Ohme,M. Oliver, P. Oppermann, Richard J. Oram,B. O'Reilly,R. O'Shaughnessy,Christian D. Ott, D. J. Ottaway,R. S. Ottens, H. Overmier, B. J. Owen,A. Pai,S. A. Pai,J. R. Palamos,Oleg V. Palashov,C. Palomba,A. Pal-Singh, H. Pan, C. Pankow, F. Pannarale, B. C. Pant, F. Paoletti, A. Paoli, M. A. Papa, H. R. Paris, W. Parker, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello,B. Patricelli,Z. Patrick, B. L. Pearlstone, M. Pedraza, R. Pedurand, L. Pekowsky, A. Pele, S. Penn, A. Perreca, M. 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ASTROPHYSICAL JOURNAL LETTERS(2016)
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摘要
The discovery of the gravitational-wave (GW) source GW150914 with the Advanced LIGO detectors provides the first observational evidence for the existence of binary black hole (BH) systems that inspiral and merge within the age of the universe. Such BH mergers have been predicted in two main types of formation models, involving isolated binaries in galactic fields or dynamical interactions in young and old dense stellar environments. The measured masses robustly demonstrate that relatively "heavy" BHs (greater than or similar to 25M(circle dot)) can form in nature. This discovery implies relatively weak massive-star winds and thus the formation of GW150914 in an environment with a metallicity lower than about 1/2 of the solar value. The rate of binary-BH (BBH) mergers inferred from the observation of GW150914 is consistent with the higher end of rate predictions (greater than or similar to 1 Gpc(-3) yr(-1)) from both types of formation models. The low measured redshift (z similar or equal to 0.1) of GW150914 and the low inferred metallicity of the stellar progenitor imply either BBH formation in a low-mass galaxy in the local universe and a prompt merger, or formation at high redshift with a time delay between formation and merger of several Gyr. This discovery motivates further studies of binary-BH formation astrophysics. It also has implications for future detections and studies by Advanced LIGO and Advanced Virgo, and GW detectors in space.
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gravitational waves,stars: black holes,stars: massive
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