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The following article is Open access
The NoEMi (Noise Frequency Event Miner) framework
T Accadia1, F Acernese, M Agathos, P Astone, G Ballardin5, F Barone, M Barsuglia6, A Basti, Th S Bauer, M Bebronne1, M Bejger, M G Beker, M Bitossi, M A Bizouard, M Blom, F Bondu, L Bonelli, R Bonnand11, V Boschi, L Bosi, B Bouhou6, S Braccini, C Bradaschia, M Branchesi, T Briant14, A Brillet, V Brisson, T Bulik, H J Bulten, D Buskulic1, C Buy6, E Calloni, B Canuel5, F Carbognani5, F Cavalier, R Cavalieri5, G Cella, E Cesarini, O Chaibi, E Chassande-Mottin6, A Chincarini15, A Chiummo5, F Cleva, E Coccia, P-F Cohadon14, C N Colacino, J Colas5, A Colla, M Colombini, A Conte, J-P Coulon, E Cuoco5, S D'Antonio, V Dattilo5, M Davier, R Day5, R De Rosa, G Debreczeni17, W Del Pozzo, L Di Fiore, A Di Lieto, M Di Paolo Emilio, A Di Virgilio, A Dietz1, M Drago, G Endröczi17, V Fafone, I Ferrante, F Fidecaro, I Fiori5, R Flaminio11, L A Forte, J-D Fournier, J Franc11, S Franco, S Frasca, F Frasconi, M Galimberti11, L Gammaitoni, F Garufi, M E Gáspár17, G Gemme15, E Genin5, A Gennai, A Giazotto, R Gouaty1, M Granata6, C Greverie, G M Guidi, J-F Hayau, A Heidmann14, H Heitmann10, P Hello, G Hemming5, P Jaranowski, R J G Jonker, M Kasprzack5, I Kowalska, A Królak, N Leroy, N Letendre1, T G F Li, N Liguori, M Lorenzini, V Loriette, G Losurdo, E Majorana, I Maksimovic, V Malvezzi, N Man, M Mantovani, F Marchesoni, F Marion1, J Marque5, F Martelli, A Masserot1, C Michel11, L Milano, Y Minenkov, M Mohan5, N Morgado11, A Morgia, S Mosca, B Mours1, L Naticchioni, F Nocera5, L Palladino, C Palomba, F Paoletti5, R Paoletti, M Parisi, A Pasqualetti5, R Passaquieti, D Passuello, G Persichetti, F Piergiovanni, M Pietka, L Pinard11, R Poggiani, M Prato15, G A Prodi, M Punturo, P Puppo, D S Rabeling, I Rácz17, P Rapagnani, V Re, T Regimbau, F Ricci, F Robinet, A Rocchi, L Rolland1, R Romano, D Rosińska, P Ruggi5, B Sassolas11, D Sentenac5, L Sperandio, R Sturani, B Swinkels5, M Tacca5, L Taffarello, A P M ter Braack, A Toncelli, M Tonelli, O Torre, E Tournefier1, F Travasso, G Vajente, J F J van den Brand, C Van Den Broeck, S van der Putten, M Vasuth17, M Vavoulidis, G Vedovato, D Verkindt1, F Vetrano, A Viceré, J-Y Vinet, S Vitale, H Vocca, R L Ward6, M Was, K Yamamoto, M Yvert1, A Zadroźny and J-P Zendri
1 Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Université de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux, France
2 INFN, Sezione di Napolia; Università di Napoli 'Federico II'b Complesso Universitario di Monte S.Angelo, I-80126 Napoli; Università di Salerno, Fisciano, I-84084 Salernoc, Italy
3 Nikhef, Science Park, Amsterdam, the Netherlandsa; VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, the Netherlandsb
5 European Gravitational Observatory (EGO), 1-56021 Cascina (PI), Italy
6 Laboratoire AstroParticule et Cosmologie (APC) Université Paris Diderot, CNRS: IN2P3, CEA: DSM/IRFU, Observatoire de Paris, 10 rue A. Domon et L. Duquet, 75013 Paris - France
7 INFN, Sezione di Pisaa; Università di Pisab; I-56127 Pisa; Università di Siena, I-53100 Sienac, Italy
8 IM-PAN 00-956 Warsawa; Astronomical Observatory Warsaw University 00-478 Warsawb; CAMK-PAN 00-716 Warsawc; Białystok University 15-424 Białystokd; IPJ 05-400 Świerk-Otwocke; Institute of Astronomy 65-265 Zielona Góraf, Poland
10 Université Nice-Sophia-Antipolis, CNRS, Observatoire de la Côte d'Azur, F-06304 Nice1; Institut de Physique de Rennes, CNRS, Université de Rennes 1, 35042 Rennesb, France
11 Laboratoire des Matériaux Avancés (LMA), IN2P3/CNRS, F-69622 Villeurbanne, Lyon, France
12 INFN, Sezione di Perugiaa; Università di Perugiab, I-06123 Perugia, Italy
13 INFN, Sezione di Firenze, I-50019 Sesto Fiorentinoa; Università degli Studi di Urbino 'Carlo Bo', I-61029 Urbinob, Italy
14 Laboratoire Kastler Brossel, ENS, CNRS, UPMC, Université Pierre et Marie Curie, 4 Place Jussieu, F-75005 Paris, France
15 INFN, Sezione di Genova; I-16146 Genova, Italy
16 INFN, Sezione di Roma Tor Vergataa; Università di Roma Tor Vergata, I-00133 Romab; Università dell'Aquila, I-67100 L'Aquilac, Italy
17 RMKI, H-1121 Budapest, Konkoly Thege Miklós út 29-33, Hungary
18 INFN, Gruppo Collegato di Trentoa and Università di Trentob, I-38050 Povo, Trento, Italy; INFN, Sezione di Padovac and Università di Padovad, I-35131 Padova, Italy
The data collected by a gravitational wave interferometer are inevitably affected by instrumental artefacts and environmental disturbances. In particular, for continuous gravitational wave (CW) studies it is important to detect narrow-band disturbances (the so-called "noise lines") during science runs, and to help scientists to identify and possibly remove or mitigate their sources. The NoEMi (Noise Frequency Event Miner) framework exploits some of the algorithms implemented for the CW search to identify, on a daily basis, the frequency lines observed in the Virgo science data and in a subset of the environmental sensors, looking for lines that match in frequency. A line tracker algorithm reconstructs the lines over time, and stores them in a database, which is made accesible via a web interface. We describe the workflow of NoEMi, providing examples of its use for the investigation of noise lines in past Virgo runs (VSR2, VSR3) and in the most recent run (VSR4).
