1. Improved upper limits on the stochastic gravitational-wave background from 2009-2010 LIGO and Virgo data.
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Aasi J, Abbott BP, Abbott R, Abbott T, Abernathy MR, Accadia T, Acernese F, Ackley K, Adams C, Adams T, Addesso P, Adhikari RX, Affeldt C, Agathos M, Aggarwal N, Aguiar OD, Ain A, Ajith P, Alemic A, Allen B, Allocca A, Amariutei D, Andersen M, Anderson R, Anderson SB, Anderson WG, Arai K, Araya MC, Arceneaux C, Areeda J, Aston SM, Astone P, Aufmuth P, Aulbert C, Austin L, Aylott BE, Babak S, Baker PT, Ballardin G, Ballmer SW, Barayoga JC, Barbet M, Barish BC, Barker D, Barone F, Barr B, Barsotti L, Barsuglia M, Barton MA, Bartos I, Bassiri R, Basti A, Batch JC, Bauchrowitz J, Bauer TS, Behnke B, Bejger M, Beker MG, Belczynski C, Bell AS, Bell C, Bergmann G, Bersanetti D, Bertolini A, Betzwieser J, Beyersdorf PT, Bilenko IA, Billingsley G, Birch J, Biscans S, Bitossi M, Bizouard MA, Black E, Blackburn JK, Blackburn L, Blair D, Bloemen S, Blom M, Bock O, Bodiya TP, Boer M, Bogaert G, Bogan C, Bond C, Bondu F, Bonelli L, Bonnand R, Bork R, Born M, Boschi V, Bose S, Bosi L, Bradaschia C, Brady PR, Braginsky VB, Branchesi M, Brau JE, Briant T, Bridges DO, Brillet A, Brinkmann M, Brisson V, Brooks AF, Brown DA, Brown DD, Brückner F, Buchman S, Bulik T, Bulten HJ, Buonanno A, Burman R, Buskulic D, Buy C, Cadonati L, Cagnoli G, Bustillo JC, Calloni E, Camp JB, Campsie P, Cannon KC, Canuel B, Cao J, Capano CD, Carbognani F, Carbone L, Caride S, Castiglia A, Caudill S, Cavaglià M, Cavalier F, Cavalieri R, Celerier C, Cella G, Cepeda C, Cesarini E, Chakraborty R, Chalermsongsak T, Chamberlin SJ, Chao S, Charlton P, Chassande-Mottin E, Chen X, Chen Y, Chincarini A, Chiummo A, Cho HS, Chow J, Christensen N, Chu Q, Chua SS, Chung S, Ciani G, Clara F, Clark JA, Cleva F, Coccia E, Cohadon PF, Colla A, Collette C, Colombini M, Cominsky L, Constancio M, Conte A, Cook D, Corbitt TR, Cordier M, Cornish N, Corpuz A, Corsi A, Costa CA, Coughlin MW, Coughlin S, Coulon JP, Countryman S, Couvares P, Coward DM, Cowart M, Coyne DC, Coyne R, Craig K, Creighton JD, Crowder SG, Cumming A, Cunningham L, Cuoco E, Dahl K, Canton TD, Damjanic M, Danilishin SL, D'Antonio S, Danzmann K, Dattilo V, Daveloza H, Davier M, Davies GS, Daw EJ, Day R, Dayanga T, Debreczeni G, Degallaix J, Deléglise S, Del Pozzo W, Denker T, Dent T, Dereli H, Dergachev V, De Rosa R, DeRosa RT, DeSalvo R, Dhurandhar S, Díaz M, Di Fiore L, Di Lieto A, Di Palma I, Di Virgilio A, Donath A, Donovan F, Dooley KL, Doravari S, Dossa S, Douglas R, Downes TP, Drago M, Drever RW, Driggers JC, Du Z, Dwyer S, Eberle T, Edo T, Edwards M, Effler A, Eggenstein H, Ehrens P, Eichholz J, Eikenberry SS, Endrőczi G, Essick R, Etzel T, Evans M, Evans T, Factourovich M, Fafone V, Fairhurst S, Fang Q, Farinon S, Farr B, Farr WM, Favata M, Fehrmann H, Fejer MM, Feldbaum D, Feroz F, Ferrante I, Ferrini F, Fidecaro F, Finn LS, Fiori I, Fisher RP, Flaminio R, Fournier JD, Franco S, Frasca S, Frasconi F, Frede M, Frei Z, Freise A, Frey R, Fricke TT, Fritschel P, Frolov VV, Fulda P, Fyffe M, Gair J, Gammaitoni L, Gaonkar S, Garufi F, Gehrels N, Gemme G, Genin E, Gennai A, Ghosh S, Giaime JA, Giardina KD, Giazotto A, Gill C, Gleason J, Goetz E, Goetz R, Gondan L, González G, Gordon N, Gorodetsky ML, Gossan S, Gossler S, Gouaty R, Gräf C, Graff PB, Granata M, Grant A, Gras S, Gray C, Greenhalgh RJ, Gretarsson AM, Groot P, Grote H, Grover K, Grunewald S, Guidi GM, Guido C, Gushwa K, Gustafson EK, Gustafson R, Hammer D, Hammond G, Hanke M, Hanks J, Hanna C, Hanson J, Harms J, Harry GM, Harry IW, Harstad ED, Hart M, Hartman MT, Haster CJ, Haughian K, Heidmann A, Heintze M, Heitmann H, Hello P, Hemming G, Hendry M, Heng IS, Heptonstall AW, Heurs M, Hewitson M, Hild S, Hoak D, Hodge KA, Holt K, Hooper S, Hopkins P, Hosken DJ, Hough J, Howell EJ, Hu Y, Huerta E, Hughey B, Husa S, Huttner SH, Huynh M, Huynh-Dinh T, Ingram DR, Inta R, Isogai T, Ivanov A, Iyer BR, Izumi K, Jacobson M, James E, Jang H, Jaranowski P, Ji Y, Jiménez-Forteza F, Johnson WW, Jones DI, Jones R, Jonker RJ, Ju L, K H, Kalmus P, Kalogera V, Kandhasamy S, Kang G, Kanner JB, Karlen J, Kasprzack M, Katsavounidis E, Katzman W, Kaufer H, Kawabe K, Kawazoe F, Kéfélian F, Keiser GM, Keitel D, Kelley DB, Kells W, Khalaidovski A, Khalili FY, Khazanov EA, Kim C, Kim K, Kim N, Kim NG, Kim YM, King EJ, King PJ, Kinzel DL, Kissel JS, Klimenko S, Kline J, Koehlenbeck S, Kokeyama K, Kondrashov V, Koranda S, Korth WZ, Kowalska I, Kozak DB, Kremin A, Kringel V, Królak A, Kuehn G, Kumar A, Kumar P, Kumar R, Kuo L, Kutynia A, Kwee P, Landry M, Lantz B, Larson S, Lasky PD, Lawrie C, Lazzarini A, Lazzaro C, Leaci P, Leavey S, Lebigot EO, Lee CH, Lee HK, Lee HM, Lee J, Leonardi M, Leong JR, Le Roux A, Leroy N, Letendre N, Levin Y, Levine B, Lewis J, Li TG, Libbrecht K, Libson A, Lin AC, Littenberg TB, Litvine V, Lockerbie NA, Lockett V, Lodhia D, Loew K, Logue J, Lombardi AL, Lorenzini M, Loriette V, Lormand M, Losurdo G, Lough J, Lubinski MJ, Lück H, Luijten E, Lundgren AP, Lynch R, Ma Y, Macarthur J, Macdonald EP, MacDonald T, Machenschalk B, MacInnis M, Macleod DM, Magana-Sandoval F, Mageswaran M, Maglione C, Mailand K, Majorana E, Maksimovic I, Malvezzi V, Man N, Manca GM, Mandel I, Mandic V, Mangano V, Mangini N, Mantovani M, Marchesoni F, Marion F, Márka S, Márka Z, Markosyan A, Maros E, Marque J, Martelli F, Martin IW, Martin RM, Martinelli L, Martynov D, Marx JN, Mason K, Masserot A, Massinger TJ, Matichard F, Matone L, Matzner RA, Mavalvala N, Mazumder N, Mazzolo G, McCarthy R, McClelland DE, McGuire SC, McIntyre G, McIver J, McLin K, Meacher D, Meadors GD, Mehmet M, Meidam J, Meinders M, Melatos A, Mendell G, Mercer RA, Meshkov S, Messenger C, Meyers P, Miao H, Michel C, Mikhailov EE, Milano L, Milde S, Miller J, Minenkov Y, Mingarelli CM, Mishra C, Mitra S, Mitrofanov VP, Mitselmakher G, Mittleman R, Moe B, Moesta P, Mohan M, Mohapatra SR, Moraru D, Moreno G, Morgado N, Morriss SR, Mossavi K, Mours B, Mow-Lowry CM, Mueller CL, Mueller G, Mukherjee S, Mullavey A, Munch J, Murphy D, Murray PG, Mytidis A, Nagy MF, Kumar DN, Nardecchia I, Naticchioni L, Nayak RK, Necula V, Nelemans G, Neri I, Neri M, Newton G, Nguyen T, Nitz A, Nocera F, Nolting D, Normandin ME, Nuttall LK, Ochsner E, O'Dell J, Oelker E, Oh JJ, Oh SH, Ohme F, Oppermann P, O'Reilly B, O'Shaughnessy R, Osthelder C, Ottaway DJ, Ottens RS, Overmier H, Owen BJ, Padilla C, Pai A, Palashov O, Palomba C, Pan H, Pan Y, Pankow C, Paoletti F, Paoletti R, Paris H, Pasqualetti A, Passaquieti R, Passuello D, Pedraza M, Penn S, Perreca A, Phelps M, Pichot M, Pickenpack M, Piergiovanni F, Pierro V, Pinard L, Pinto IM, Pitkin M, Poeld J, Poggiani R, Poteomkin A, Powell J, Prasad J, Premachandra S, Prestegard T, Price LR, Prijatelj M, Privitera S, Prodi GA, Prokhorov L, Puncken O, Punturo M, Puppo P, Qin J, Quetschke V, Quintero E, Quiroga G, Quitzow-James R, Raab FJ, Rabeling DS, Rácz I, Radkins H, Raffai P, Raja S, Rajalakshmi G, Rakhmanov M, Ramet C, Ramirez K, Rapagnani P, Raymond V, Re V, Read J, Reed CM, Regimbau T, Reid S, Reitze DH, Rhoades E, Ricci F, Riles K, Robertson NA, Robinet F, Rocchi A, Rodruck M, Rolland L, Rollins JG, Romano JD, Romano R, Romanov G, Romie JH, Rosińska D, Rowan S, Rüdiger A, Ruggi P, Ryan K, Salemi F, Sammut L, Sandberg V, Sanders JR, Sannibale V, Santiago-Prieto I, Saracco E, Sassolas B, Sathyaprakash BS, Saulson PR, Savage R, Scheuer J, Schilling R, Schnabel R, Schofield RM, Schreiber E, Schuette D, Schutz BF, Scott J, Scott SM, Sellers D, Sengupta AS, Sentenac D, Sequino V, Sergeev A, Shaddock D, Shah S, Shahriar MS, Shaltev M, Shapiro B, Shawhan P, Shoemaker DH, Sidery TL, Siellez K, Siemens X, Sigg D, Simakov D, Singer A, Singer L, Singh R, Sintes AM, Slagmolen BJ, Slutsky J, Smith JR, Smith M, Smith RJ, Smith-Lefebvre ND, Son EJ, Sorazu B, Souradeep T, Sperandio L, Staley A, Stebbins J, Steinlechner J, Steinlechner S, Stephens BC, Steplewski S, Stevenson S, Stone R, Stops D, Strain KA, Straniero N, Strigin S, Sturani R, Stuver AL, Summerscales TZ, Susmithan S, Sutton PJ, Swinkels B, Tacca M, Talukder D, Tanner DB, Tarabrin SP, Taylor R, Ter Braack AP, Thirugnanasambandam MP, Thomas M, Thomas P, Thorne KA, Thorne KS, Thrane E, Tiwari V, Tokmakov KV, Tomlinson C, Toncelli A, Tonelli M, Torre O, Torres CV, Torrie CI, Travasso F, Traylor G, Tse M, Ugolini D, Unnikrishnan CS, Urban AL, Urbanek K, Vahlbruch H, Vajente G, Valdes G, Vallisneri M, van den Brand JF, Van Den Broeck C, van der Putten S, van der Sluys MV, van Heijningen J, van Veggel AA, Vass S, Vasúth M, Vaulin R, Vecchio A, Vedovato G, Veitch J, Veitch PJ, Venkateswara K, Verkindt D, Verma SS, Vetrano F, Viceré A, Vincent-Finley R, Vinet JY, Vitale S, Vo T, Vocca H, Vorvick C, Vousden WD, Vyachanin SP, Wade A, Wade L, Wade M, Walker M, Wallace L, Wang M, Wang X, Ward RL, Was M, Weaver B, Wei LW, Weinert M, Weinstein AJ, Weiss R, Welborn T, Wen L, Wessels P, West M, Westphal T, Wette K, Whelan JT, White DJ, Whiting BF, Wiesner K, Wilkinson C, Williams K, Williams L, Williams R, Williams T, Williamson AR, Willis JL, Willke B, Wimmer M, Winkler W, Wipf CC, Wiseman AG, Wittel H, Woan G, Worden J, Yablon J, Yakushin I, Yamamoto H, Yancey CC, Yang H, Yang Z, Yoshida S, Yvert M, Zadrożny A, Zanolin M, Zendri JP, Zhang F, Zhang L, Zhao C, Zhu XJ, Zucker ME, Zuraw S, and Zweizig J
- Abstract
Gravitational waves from a variety of sources are predicted to superpose to create a stochastic background. This background is expected to contain unique information from throughout the history of the Universe that is unavailable through standard electromagnetic observations, making its study of fundamental importance to understanding the evolution of the Universe. We carry out a search for the stochastic background with the latest data from the LIGO and Virgo detectors. Consistent with predictions from most stochastic gravitational-wave background models, the data display no evidence of a stochastic gravitational-wave signal. Assuming a gravitational-wave spectrum of Ω_{GW}(f)=Ω_{α}(f/f_{ref})^{α}, we place 95% confidence level upper limits on the energy density of the background in each of four frequency bands spanning 41.5-1726 Hz. In the frequency band of 41.5-169.25 Hz for a spectral index of α=0, we constrain the energy density of the stochastic background to be Ω_{GW}(f)<5.6×10^{-6}. For the 600-1000 Hz band, Ω_{GW}(f)<0.14(f/900 Hz)^{3}, a factor of 2.5 lower than the best previously reported upper limits. We find Ω_{GW}(f)<1.8×10^{-4} using a spectral index of zero for 170-600 Hz and Ω_{GW}(f)<1.0(f/1300 Hz)^{3} for 1000-1726 Hz, bands in which no previous direct limits have been placed. The limits in these four bands are the lowest direct measurements to date on the stochastic background. We discuss the implications of these results in light of the recent claim by the BICEP2 experiment of the possible evidence for inflationary gravitational waves.
- Published
- 2014
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