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Calibration of Advanced Virgo and Reconstruction of the Gravitational Wave Signal h(t) during the Observing Run O2

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arxiv 1807.03275 v2 pith:DI2URDHH submitted 2018-07-09 gr-qc astro-ph.IM

Calibration of Advanced Virgo and Reconstruction of the Gravitational Wave Signal h(t) during the Observing Run O2

Virgo Collaboration: F. Acernese , T. Adams , K. Agatsuma , L. Aiello , A. Allocca , M.A. Aloy , A. Amato , S. Antier
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M. Ar\`ene N. Arnaud S. Ascenzi P. Astone F. Aubin S. Babak P. Bacon F. Badaracco M.K.M. Bader F. Baldaccini G. Ballardin F. Barone M. Barsuglia D. Barta A. Basti M. Bawaj M. Bazzan M. Bejger I. Belahcene S. Bernuzzi D. Bersanetti A. Bertolini M. Bitossi M.A. Bizouard S. Bloemen M. Boer G. Bogaert F. Bondu R. Bonnand B.A. Boom V. Boschi Y. Bouffanais A. Bozzi C. Bradaschia M. Branchesi T. Briant F. Brighenti A. Brillet V. Brisson T. Bulik H.J. Bulten D. Buskulic C. Buy G. Cagnoli E. Calloni M. Canepa P. Canizares E. Capocasa F. Carbognani J. Casanueva Diaz C. Casentini S. Caudill F. Cavalier R. Cavalieri G. Cella P. Cerd\'a-Dur\'an G. Cerretani E. Cesarini O. Chaibi E. Chassande-Mottin A. Chincarini A. Chiummo N. Christensen S. Chua G. Ciani R. Ciolfi F. Cipriano A. Cirone F. Cleva E. Coccia P.F. Cohadon D. Cohen A. Colla L. Conti I. Cordero-Carri\'on S. Cortese J.P. Coulon E. Cuoco S. D'Antonio V. Dattilo M. Davier C. De Rossi J. Degallaix M. De Laurentis S. Del\'eglise W. Del Pozzo R. De Pietri R. De Rosa L. Di Fiore M. Di Giovanni T. Di Girolamo A. Di Lieto S. Di Pace I. Di Palma F. Di Renzo V. Dolique M. Drago M. Eisenmann D. Estevez V. Fafone S. Farinon F. Feng I. Ferrante F. Ferrini F. Fidecaro I. Fiori D. Fiorucci R. Flaminio J.A.Font J.-D. Fournier S. Frasca F. Frasconi V. Frey L. Gammaitoni F. Garufi G. Gemme E. Genin A. Gennai V. Germain Archisman Ghosh B. Giacomazzo A. Giazotto G. Giordano J.M. Gonzalez Castro M. Gosselin R. Gouaty A. Grado M. Granata G. Greco P. Groot P. Gruning G.M. Guidi O. Halim J. Harms A. Heidmann H. Heitmann P. Hello G. Hemming T. Hinderer D. Hoak D. Hofman A. Hreibi D. Huet A. Iess G. Intini J.M. Isac T. Jacqmin P. Jaranowski R.J.G. Jonker S. Katsanevas F. K\'ef\'elian I. Khan S. Koley I. Kowalska A. Kr\'olak A. Kutynia A. Lartaux-Vollard C. Lazzaro P. Leaci M. Leonardi N. Leroy N. Letendre A. Longo M. Lorenzini V. Loriette G. Losurdo D. Lumaca E. Majorana I. Maksimovic N. Man M. Mantovani F. Marchesoni F. Marion A. Marquina F. Martelli L. Martellini A. Masserot S. Mastrogiovanni J. Meidam L. Mereni M. Merzougui R. Metzdorff C. Michel L. Milano A. Miller O. Minazzoli Y. Minenkov M. Mohan M. Montani B. Mours I. Nardecchia L. Naticchioni G. Nelemans D. Nichols S. Nissanke F. Nocera M. Obergaulinger G. Pagano C. Palomba F. Paoletti A. Paoli A. Pasqualetti R. Passaquieti D. Passuello M. Patil B. Patricelli R. Pedurand A. Perreca O.J. Piccinni M. Pichot F. Piergiovanni G. Pillant L. Pinard R. Poggiani P. Popolizio E.K.Porter L. Possenti G. A. Prodi M. Punturo P. Puppo P. Rapagnani M. Razzano T. Regimbau L. Rei F. Ricci F. Robinet A. Rocchi L. Rolland R. Romano D. Rosi\'nska P. Ruggi L. Salconi A. Samajdar N. Sanchis-Gual B. Sassolas P. Schmidt D. Sentenac V. Sequino M. Sieniawska A. Singhal F. Sorrentino G. Stratta B.L. Swinkels M. Tacca S. Tiwari M. Tonelli A. Torres-Forn\'e F. Travasso M.C. Tringali L. Trozzo K.W. Tsang N. van Bakel M. van Beuzekom J.F.J. van den Brand C. Van Den Broeck L. van der Schaaf J. V.van Heijningen M. Vardaro M. Vas\'uth G. Vedovato D. Verkindt F. Vetrano A. Vicer\'e J.-Y. Vinet H. Vocca R. Walet G. Wang M. Was A.R. Williamson M. Yvert A. Zadro\.zny T. Zelenova J. P. Zendri S. Kandhasamy A.L. Urban
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classification gr-qc astro-ph.IM
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In August 2017, Advanced Virgo joined Advanced LIGO for the end of the O2 run, leading to the first gravitational waves detections with the three-detector network. This paper describes the Advanced Virgo calibration and the gravitational wave strain h(t) reconstruction during O2. The methods are the same as the ones developed for the initial Virgo detector and have already been described in previous publications, this paper summarizes the differences and emphasis is put on estimating systematic uncertainties. Three versions of the h(t) signal have been computed for the Virgo O2 run, an online version and two post-run reprocessed versions with improved detector calibration and reconstruction algorithm. A photon calibrator has been used to establish the sign of h(t) and to make an independent partial cross-check of the systematic uncertainties. The uncertainties reached for the latest h(t) version are 5.1% in amplitude, 40 mrad in phase and 20 microseconds in timing.

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