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Identification and mitigation of narrow spectral artifacts that degrade searches for persistent gravitational waves in the first two observing runs of Advanced LIGO

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arxiv 1801.07204 v1 pith:CTMLNIZ5 submitted 2018-01-22 astro-ph.IM

Identification and mitigation of narrow spectral artifacts that degrade searches for persistent gravitational waves in the first two observing runs of Advanced LIGO

P. B. Covas , A. Effler , E. Goetz , P. M. Meyers , A. Neunzert , M. Oliver , B. L. Pearlstone , V. J. Roma
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R. M. S. Schofield V. B. Adya P. Astone S. Biscoveanu T. A. Callister N. Christensen A. Colla E. Coughlin M. W. Coughlin S. G. Crowder S. E. Dwyer S. Hourihane S. Kandhasamy W. Liu A. P. Lundgren A. Matas R. McCarthy J. McIver G. Mendell R. Ormiston C. Palomba O. J. Piccinni K. Rao K. Riles L. Sammut S. Schlassa D. Sigg N. Strauss D. Tao K. A. Thorne E. Thrane S. Trembath-Reichert B. P. Abbott R. Abbott T. D. Abbott C. Adams R. X. Adhikari A. Ananyeva S. Appert K. Arai S. M. Aston C. Austin S. W. Ballmer D. Barker B. Barr L. Barsotti J. Bartlett I. Bartos J. C. Batch M. Bejger A. S. Bell J. Betzwieser G. Billingsley J. Birch S. Biscans C. Biwer C. D. Blair R. M. Blair R. Bork A. F. Brooks H. Cao G. Ciani F. Clara P. Clearwater S. J. Cooper P. Corban S. T. Countryman M. J. Cowart D. C. Coyne A. Cumming L. Cunningham K. Danzmann C. F. Da Silva Costa E. J. Daw D. DeBra R. T. DeRosa R. DeSalvo K. L. Dooley S. Doravari J. C. Driggers T. B. Edo T. Etzel M. Evans T. M. Evans M. Factourovich H. Fair A. Fern\'andez Galiana E. C. Ferreira R. P. Fisher H. Fong R. Frey P. Fritschel V. V. Frolov P. Fulda M. Fyffe B. Gateley J. A. Giaime K. D. Giardina R. Goetz B. Goncharov S. Gras C. Gray H. Grote K. E. Gushwa E. K. Gustafson R. Gustafson E. D. Hall G. Hammond J. Hanks J. Hanson T. Hardwick G. M. Harry M. C. Heintze A. W. Heptonstall J. Hough R. Inta K. Izumi R. Jones S. Karki M. Kasprzack S. Kaufer K. Kawabe R. Kennedy N. Kijbunchoo W. Kim E. J. King P. J. King J. S. Kissel W. Z. Korth G. Kuehn M. Landry B. Lantz M. Laxen J. Liu N. A. Lockerbie M. Lormand M. MacInnis D. M. Macleod S. M\'arka Z. M\'arka A. S. Markosyan E. Maros P. Marsh I. W. Martin D. V. Martynov K. Mason T. J. Massinger F. Matichard N. Mavalvala D. E. McClelland S. McCormick L. McCuller G. McIntyre T. McRae E. L. Merilh J. Miller R. Mittleman G. Mo K. Mogushi D. Moraru G. Moreno G. Mueller N. Mukund A. Mullavey J. Munch T. J. N. Nelson P. Nguyen L. K. Nuttall J. Oberling O. Oktavia P. Oppermann Richard J. Oram B. O'Reilly D. J. Ottaway H. Overmier J. R. Palamos W. Parker A. Pele S. Penn C. J. Perez M. Phelps V. Pierro I. Pinto M. Principe L. G. Prokhorov O. Puncken V. Quetschke E. A. Quintero H. Radkins P. Raffai K. E. Ramirez S. Reid D. H. Reitze N. A. Robertson J. G. Rollins C. L. Romel J. H. Romie M. P. Ross S. Rowan K. Ryan T. Sadecki E. J. Sanchez L. E. Sanchez V. Sandberg R. L. Savage D. Sellers D. A. Shaddock T. J. Shaffer B. Shapiro D. H. Shoemaker B. J. J. Slagmolen B. Smith J. R. Smith B. Sorazu A. P. Spencer A. Staley K. A. Strain L. Sun D. B. Tanner J. D. Tasson R. Taylor M. Thomas P. Thomas K. Toland C. I. Torrie G. Traylor M. Tse D. Tuyenbayev G. Vajente G. Valdes A. A. van Veggel A. Vecchio P. J. Veitch K. Venkateswara T. Vo C. Vorvick M. Wade M. Walker R. L. Ward J. Warner B. Weaver R. Weiss P. We{\ss}els B. Willke C. C. Wipf J. Wofford J. Worden H. Yamamoto C. C. Yancey Hang Yu Haocun Yu L. Zhang S. Zhu M. E. Zucker J. Zweizig
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keywords artifactsgravitationalsearcheswavesadvancedcontinuousdataligo
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Searches are under way in Advanced LIGO and Virgo data for persistent gravitational waves from continuous sources, e.g. rapidly rotating galactic neutron stars, and stochastic sources, e.g. relic gravitational waves from the Big Bang or superposition of distant astrophysical events such as mergers of black holes or neutron stars. These searches can be degraded by the presence of narrow spectral artifacts (lines) due to instrumental or environmental disturbances. We describe a variety of methods used for finding, identifying and mitigating these artifacts, illustrated with particular examples. Results are provided in the form of lists of line artifacts that can safely be treated as non-astrophysical. Such lists are used to improve the efficiencies and sensitivities of continuous and stochastic gravitational wave searches by allowing vetoes of false outliers and permitting data cleaning.

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