Related papers: DC readout experiment in Enhanced LIGO

Precise calibration of LIGO test mass actuators using photon radiation pressure

Precise calibration of kilometer-scale interferometric gravitational wave detectors is crucial for source localization and waveform reconstruction. A technique that uses the radiation pressure of a power-modulated auxiliary laser to induce…

General Relativity and Quantum Cosmology · Physics 2010-02-23 E. Goetz , P. Kalmus , S. Erickson , R. L. Savage , G. Gonzalez , K. Kawabe , M. Landry , S. Marka , B. O'Reilly , K. Riles , D. Sigg , P. Willems

A new type of quantum speed meter interferometer: measuring speed to search for intermediate mass black holes

The recent discovery of gravitational waves (GW) by LIGO has impressively launched the novel field of gravitational astronomy and it allowed us to glimpse at exciting objects we could so far only speculate about. Further sensitivity…

General Relativity and Quantum Cosmology · Physics 2018-06-05 Stefan L. Danilishin , Eugene Knyazev , Nikita V. Voronchev , Farid Ya. Khalili , Christian Gräf , Sebastian Steinlechner , Jan-Simon Hennig , Stefan Hild

A novel multi-layer modular approach for real-time fuzzy-identification of gravitational-wave signals

Advanced LIGO and Advanced Virgo ground-based interferometers are instruments capable to detect gravitational wave signals exploiting advanced laser interferometry techniques. The underlying data analysis task consists in identifying…

General Relativity and Quantum Cosmology · Physics 2023-12-19 Francesco Pio Barone , Daniele Dell'Aquila , Marco Russo

Seismic isolation of Advanced LIGO: Review of strategy, instrumentation and performance

Isolating ground-based interferometric gravitational wave observatories from environmental disturbances is one of the great challenges of the advanced detector era. In order to directly observe gravitational waves, the detector components…

Instrumentation and Detectors · Physics 2016-01-20 F. Matichard , B. Lantz , R. Mittleman , K. Mason , J. Kissel , J. McIver , B. Abbott , R. Abbott , S. Abbott , E. Allwine , S. Barnum , J. Birch , S. Biscans , C. Celerier , D. Clark , D. Coyne , D. DeBra , R. DeRosa , M. Evans , S. Foley , P. Fritschel , J. A. Giaime , C. Gray , G. Grabeel , J. Hanson , C. Hardham , M. Hillard , W. Hua , C. Kucharczyk , M. Landry , A. Le Roux , V. Lhuillier , D. Macleod , M. Macinnis , R. Mitchell , B. O Reilly , D. Ottaway , H. Paris , A. Pele , M. Puma , H. Radkins , C. Ramet , M. Robinson , L. Ruet , P. Sarin , D. Shoemaker , A. Stein , J. Thomas , M. Vargas , K. Venkateswara , J. Warner , S. Wen

Calibration Uncertainty for Advanced LIGO's First and Second Observing Runs

Calibration of the Advanced LIGO detectors is the quantification of the detectors' response to gravitational waves. Gravitational waves incident on the detectors cause phase shifts in the interferometer laser light which are read out as…

Instrumentation and Methods for Astrophysics · Physics 2017-11-15 Craig Cahillane , Joe Betzwieser , Duncan A. Brown , Evan Goetz , Evan D. Hall , Kiwamu Izumi , Shivaraj Kandhasamy , Sudarshan Karki , Jeff S. Kissel , Greg Mendell , Richard L. Savage , Darkhan Tuyenbayev , Alex Urban , Aaron Viets , Madeline Wade , Alan J. Weinstein

Squeezed-input, optical-spring, signal-recycled gravitational-wave detectors

We theoretically analyze the quantum noise of signal-recycled laser interferometric gravitational-wave detectors with additional input and output optics, namely frequency-dependent squeezing of the vacuum entering the dark port and…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Jan Harms , Yanbei Chen , Simon Chelkowski , Alexander Franzen , Henning Vahlbruch , Karsten Danzmann , Roman Schnabel

Calibration of the Advanced LIGO detectors for the discovery of the binary black-hole merger GW150914

In Advanced LIGO, detection and astrophysical source parameter estimation of the binary black hole merger GW150914 requires a calibrated estimate of the gravitational-wave strain sensed by the detectors. Producing an estimate from each…

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Glaefke , E. Goetz , R. Goetz , L. Gondan , G. González , A. Gopakumar , N. A. Gordon , M. L. Gorodetsky , S. E. Gossan , C. Graef , P. B. Graff , A. Grant , S. Gras , C. Gray , A. C. Green , H. Grote , S. Grunewald , 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 , M. D. Hannam , J. Hanson , T. Hardwick , G. M. Harry , I. W. Harry , M. J. Hart , M. T. Hartman , C. -J. Haster , K. Haughian , M. C. Heintze , M. Hendry , I. S. Heng , J. Hennig , A. W. Heptonstall , M. Heurs , S. Hild , D. Hoak , K. A. Hodge , S. E. Hollitt , K. Holt , D. E. Holz , P. Hopkins , D. J. Hosken , J. Hough , E. A. Houston , E. J. Howell , Y. M. Hu , S. Huang , E. A. Huerta , B. Hughey , S. Husa , S. H. Huttner , T. Huynh-Dinh , A. Idrisy , N. Indik , D. R. Ingram , R. Inta , H. N. Isa , M. Isi , G. Islas , T. Isogai , B. R. Iyer , K. Izumi , H. Jang , K. Jani , S. Jawahar , F. Jiménez-Forteza , W. W. Johnson , D. I. Jones , R. Jones , L. Ju , Haris K , 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 , M. S. Kehl , D. Keitel , D. B. Kelley , W. Kells , R. Kennedy , J. S. Key , A. Khalaidovski , F. Y. Khalili , S. Khan , Z. Khan , E. A. Khazanov , N. Kijbunchoo , C. Kim , J. Kim , K. Kim , N. 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 , V. Kondrashov , A. Kontos , M. Korobko , W. Z. Korth , D. B. Kozak , V. Kringel , B. Krishnan , C. Krueger , G. Kuehn , P. Kumar , L. Kuo , 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 , H. K. Lee , H. M. Lee , K. Lee , A. Lenon , J. R. Leong , Y. Levin , B. M. Levine , T. G. F. Li , A. Libson , T. B. Littenberg , N. A. Lockerbie , J. Logue , A. L. Lombardi , J. E. Lord , M. Lormand , J. D. Lough , H. Lück , A. P. Lundgren , J. Luo , R. Lynch , Y. Ma , T. MacDonald , B. Machenschalk , M. MacInnis , D. M. Macleod , F. Magana-Sandoval , R. M. Magee , M. Mageswaran , I. Mandel , V. Mandic , V. Mangano , G. L. Mansell , M. Manske , S. Márka , Z. Márka , A. S. Markosyan , E. Maros , I. W. Martin , R. M. Martin , D. V. Martynov , J. N. Marx , K. Mason , 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 , G. D. Meadors , A. Melatos , G. Mendell , D. Mendoza-Gandara , R. A. Mercer , E. Merilh , S. Meshkov , C. Messenger , C. Messick , P. M. Meyers , H. Miao , H. Middleton , E. E. Mikhailov , K. N. Mukund , J. Miller , M. Millhouse , J. Ming , S. Mirshekari , C. Mishra , S. Mitra , V. P. Mitrofanov , G. Mitselmakher , R. Mittleman , S. R. P. Mohapatra , B. C. Moore , C. J. Moore , D. Moraru , G. Moreno , S. R. Morriss , K. Mossavi , C. M. Mow-Lowry , C. L. Mueller , G. Mueller , A. W. Muir , Arunava Mukherjee , D. Mukherjee , S. Mukherjee , A. Mullavey , J. Munch , D. J. Murphy , P. G. Murray , A. Mytidis , R. K. Nayak , V. Necula , K. Nedkova , A. Neunzert , G. Newton , T. T. Nguyen , A. B. Nielsen , A. Nitz , D. Nolting , M. E. N. Normandin , L. K. Nuttall , J. Oberling , E. Ochsner , J. O'Dell , E. Oelker , G. H. Ogin , J. J. Oh , S. H. Oh , F. Ohme , M. Oliver , P. Oppermann , Richard J. Oram , B. O'Reilly , R. O'Shaughnessy , C. D. Ott , D. J. Ottaway , R. S. Ottens , H. Overmier , B. J. Owen , A. Pai , S. A. Pai , J. R. Palamos , O. Palashov , A. Pal-Singh , H. Pan , C. Pankow , F. Pannarale , B. C. Pant , M. A. Papa , H. R. Paris , W. Parker , D. Pascucci , Z. Patrick , B. L. Pearlstone , M. Pedraza , L. Pekowsky , A. Pele , S. Penn , R. Pereira , A. Perreca , M. Phelps , V. Pierro , I. M. Pinto , M. Pitkin , A. Post , J. Powell , J. Prasad , V. Predoi , S. S. Premachandra , T. Prestegard , L. R. Price , M. Principe , S. Privitera , R. Prix , L. Prokhorov , O. Puncken , M. Pürrer , H. Qi , J. Qin , V. Quetschke , E. A. Quintero , R. Quitzow-James , F. J. Raab , D. S. Rabeling , H. Radkins , P. Raffai , S. Raja , M. Rakhmanov , V. Raymond , J. Read , C. M. Reed , S. Reid , D. H. Reitze , H. Rew , K. Riles , N. A. Robertson , R. Robie , J. G. Rollins , V. J. Roma , J. D. Romano , G. Romanov , J. H. Romie , S. Rowan , A. Rüdiger , K. Ryan , S. Sachdev , T. Sadecki , L. Sadeghian , M. Saleem , F. Salemi , A. Samajdar , L. Sammut , E. J. Sanchez , V. Sandberg , B. Sandeen , J. R. Sanders , B. S. Sathyaprakash , P. R. Saulson , O. Sauter , R. L. Savage , A. Sawadsky , P. Schale , R. Schilling , J. Schmidt , P. Schmidt , R. Schnabel , R. M. S. Schofield , A. Schönbeck , E. Schreiber , D. Schuette , B. F. Schutz , J. Scott , S. M. Scott , D. Sellers , A. Sergeev , G. Serna , A. Sevigny , D. A. Shaddock , M. S. Shahriar , M. Shaltev , Z. Shao , B. Shapiro , P. Shawhan , A. Sheperd , D. H. Shoemaker , D. M. Shoemaker , X. Siemens , D. Sigg , A. D. Silva , D. Simakov , A. Singer , L. P. Singer , A. Singh , R. Singh , A. M. Sintes , B. J. J. Slagmolen , J. R. Smith , N. D. Smith , R. J. E. Smith , E. J. Son , B. Sorazu , T. Souradeep , A. K. Srivastava , A. Staley , M. Steinke , J. Steinlechner , S. Steinlechner , D. Steinmeyer , B. C. Stephens , R. Stone , K. A. Strain , N. A. Strauss , S. Strigin , R. Sturani , A. L. Stuver , T. Z. Summerscales , L. Sun , P. J. Sutton , M. J. Szczepańczyk , D. Talukder , D. B. Tanner , M. Tápai , S. P. Tarabrin , A. Taracchini , R. Taylor , T. Theeg , M. P. Thirugnanasambandam , E. G. Thomas , M. Thomas , P. Thomas , K. A. Thorne , K. S. Thorne , E. Thrane , V. Tiwari , K. V. Tokmakov , C. Tomlinson , C. V. Torres , C. I. Torrie , D. Töyrä , G. Traylor , D. Trifirò , M. Tse , D. Tuyenbayev , D. 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Zuraw , J. Zweizig

Distributed State Machine Supervision for Long-baseline Gravitational-wave Detectors

The Laser Interferometer Gravitational-wave Observatory (LIGO) consists of two identical yet independent, widely-separated, long-baseline gravitational-wave detectors. Each Advanced LIGO detector consists of complex optical-mechanical…

Instrumentation and Methods for Astrophysics · Physics 2016-08-12 Jameson Graef Rollins

A first comparison of search methods for gravitational wave bursts using LIGO and Virgo simulated data

We present a comparative study of 6 search methods for gravitational wave bursts using simulated LIGO and Virgo noise data. The data's spectra were chosen to follow the design sensitivity of the two 4km LIGO interferometers and the 3km…

General Relativity and Quantum Cosmology · Physics 2007-05-23 L. Blackburn , F. Beauville , M. -A. Bizouard , L. Bosi , P. Brady , L. Brocco , D. Brown , D. Buskulic , S. Chatterji , N. Christensen , A. -C. Clapson , S. Fairhurst , D. Grosjean , G. Guidi , P. Hello , E. Katsavounidis , M. Knight , A. Lazzarini , F. Marion , B. Mours , F. Ricci , A. Vicere , M. Zanolin

Characterization of gravitational-wave detector noise with fractals

We present a new method, based on fractal analysis, to characterize the output of a physical detector that is in the form of a set of real-valued, discrete physical measurements. We apply the method to gravitational-wave data from the…

General Relativity and Quantum Cosmology · Physics 2022-06-29 Marco Cavaglia

Second generation instruments for the Laser Interferometer Gravitational Wave Observatory (LIGO)

The interferometers being planned for second generation LIGO promise and order of magnitude increase in broadband strain sensitivity--with the corresponding cubic increase in detection volume--and an extension of the observation band to…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Peter Fritschel

Reduction of quantum noise and increase of amplification of gravitational waves signals in Michelson interferometer by the use of squeezed states

It is shown in the present Letter that the quantum noise due to high laser intensities in Michelson interferometer for gravitational waves detection can be reduced by sending squeezed vacuum states to the 'dark' port of the interferometer.…

General Relativity and Quantum Cosmology · Physics 2010-05-27 Yacob Ben-Aryeh

Gravitational-wave standard siren without redshift identification

Proposed space-based gravitational-wave (GW) detectors such as DECIGO and BBO will detect $\sim10^6$ neutron-star (NS) binaries and determine the luminosity distances to the binaries with high precision. Combining the luminosity distances…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Atsushi Nishizawa , Kent Yagi , Atsushi Taruya , Takahiro Tanaka

Transfer Learning Adapts to Changing PSD in Gravitational Wave Data

The detection of gravitational waves has opened unparalleled opportunities for observing the universe, particularly through the study of black hole inspirals. These events serve as unique laboratories to explore the laws of physics under…

General Relativity and Quantum Cosmology · Physics 2024-10-22 Beka Modrekiladze

Denoising of gravitational wave signals via dictionary learning algorithms

Gravitational wave astronomy has become a reality after the historical detections accomplished during the first observing run of the two advanced LIGO detectors. In the following years, the number of detections is expected to increase…

Instrumentation and Methods for Astrophysics · Physics 2017-02-01 Alejandro Torres-Forné , Antonio Marquina , José A. Font , José M. Ibáñez

Homodyne coherent quantum noise cancellation in a hybrid optomechanical force sensor

In this paper, we propose an experimentally viable scheme to enhance the sensitivity of force detection in a hybrid optomechanical setup assisted by squeezed vacuum injection, beyond the standard quantum limit (SQL). The scheme is based on…

Quantum Physics · Physics 2022-08-29 H. Allahverdi , Ali Motazedifard , A. Dalafi , D. Vitali , M. H. Naderi

Conversion of conventional gravitational-wave interferometers into QND interferometers by modifying their input and/or output optics

The LIGO-II gravitational-wave interferometers (ca. 2006--2008) are designed to have sensitivities at about the standard quantum limit (SQL) near 100 Hz. This paper describes and analyzes possible designs for subsequent, LIGO-III…

General Relativity and Quantum Cosmology · Physics 2009-10-31 H. J. Kimble , Yuri Levin , Andrey B. Matsko , Kip S. Thorne , Sergey P. Vyatchanin

First characterisation of the MAGO cavity, a superconducting RF detector for kHz-MHz gravitational waves

Heterodyne detection using microwave cavities is a promising method for detecting high-frequency gravitational waves or ultralight axion dark matter. In this work, we report on studies conducted on a spherical 2-cell cavity developed by the…

General Relativity and Quantum Cosmology · Physics 2025-06-19 Lars Fischer , Bianca Giaccone , Ivan Gonin , Anna Grassellino , Wolfgang Hillert , Timergali Khabiboulline , Tom Krokotsch , Gudrid Moortgat-Pick , Andrea Muhs , Yuriy Orlov , Michel Paulsen , Krisztian Peters , Sam Posen , Oleg Pronitchev , Marc Wenskat

The new generation lunar gravitational wave detectors: sky map resolution and joint analysis

Lunar-based gravitational-wave interferometry is a fascinating endeavor, and was proposed as a promising approach to bridge the observational gap between space-borne and ground-based detectors. In this work, we adopt the Fisher-matrix…

General Relativity and Quantum Cosmology · Physics 2026-05-12 Xiaolin Zhang , Chengye Yu , Haoran Li , Sobhan Kazempour , Mingqiu Li , Sichun Sun

Advancing Glitch Classification in Gravity Spy: Multi-view Fusion with Attention-based Machine Learning for Advanced LIGO's Fourth Observing Run

The first successful detection of gravitational waves by ground-based observatories, such as the Laser Interferometer Gravitational-Wave Observatory (LIGO), marked a breakthrough in our comprehension of the Universe. However, due to the…

General Relativity and Quantum Cosmology · Physics 2025-08-15 Yunan Wu , Michael Zevin , Christopher P. L. Berry , Kevin Crowston , Carsten Østerlund , Zoheyr Doctor , Sharan Banagiri , Corey B. Jackson , Vicky Kalogera , Aggelos K. Katsaggelos