Related papers: Hydraulic External Pre-Isolator System for LIGO

The path to the enhanced and advanced LIGO gravitational-wave detectors

We report on the status of the Laser Interferometric Gravitational-Wave Observatory (LIGO) and the plans and progress towards Enhanced and Advanced LIGO. The initial LIGO detectors have finished a two year long data run during which a full…

General Relativity and Quantum Cosmology · Physics 2019-08-13 Joshua R Smith

Calibration of the LIGO Gravitational Wave Detectors in the Fifth Science Run

The Laser Interferometer Gravitational Wave Observatory (LIGO) is a network of three detectors built to detect local perturbations in the space-time metric from astrophysical sources. These detectors, two in Hanford, WA and one in…

General Relativity and Quantum Cosmology · Physics 2010-12-09 LIGO Scientific Collaboration , J. Abadie , B. P. Abbott , R. Abbott , M , Abernathy , C. Adams , R. Adhikari , P. Ajith , B. Allen , G. Allen , E. Amador Ceron , R. S. Amin , S. B. Anderson , W. G. Anderson , M. A. Arain , M. Araya , M. Aronsson , Y. Aso , S. Aston , D. E. Atkinson , P. Aufmuth , C. Aulbert , S. Babak , P. Baker , S. Ballmer , D. Barker , S. Barnum , B. Barr , P. Barriga , L. Barsotti , M. A. Barton , I. Bartos , R. Bassiri , M. Bastarrika , J. Bauchrowitz , B. Behnke , M. Benacquista , A. Bertolini , J. Betzwieser , N. Beveridge , P. T. Beyersdorf , I. A. Bilenko , G. Billingsley , J. Birch , R. Biswas , E. Black , J. K. Blackburn , L. Blackburn , D. Blair , B. Bland , O. Bock , T. P. Bodiya , R. Bondarescu , R. Bork , M. Born , S. Bose , M. Boyle , P. R. Brady , V. B. Braginsky , J. E. Brau , J. Breyer , D. O. Bridges , M. Brinkmann , M. Britzger , A. F. Brooks , D. A. Brown , A. Buonanno , J. Burguet--Castell , O. Burmeister , R. L. Byer , L. Cadonati , J. B. Camp , P. Campsie , J. Cannizzo , K. C. Cannon , J. Cao , C. Capano , S. Caride , S. Caudill , M. Cavaglià , C. Cepeda , T. Chalermsongsak , E. Chalkley , P. Charlton , S. Chelkowski , Y. Chen , N. Christensen , S. S. Y. Chua , C. T. Y. Chung , D. Clark , J. Clark , J. H. Clayton , R. Conte , D. Cook , T. R. Corbitt , N. Cornish , C. A. Costa , D. Coward , D. C. Coyne , J. D. E. Creighton , T. D. Creighton , A. M. Cruise , R. M. Culter , A. Cumming , L. Cunningham , K. Dahl , S. L. Danilishin , R. Dannenberg , K. Danzmann , K. Das , B. Daudert , G. Davies , A. Davis , E. J. Daw , T. Dayanga , D. DeBra , J. Degallaix , V. Dergachev , R. DeRosa , R. DeSalvo , P. Devanka , S. Dhurandhar , I. Di Palma , M. Díaz , F. Donovan , K. L. Dooley , E. E. Doomes , S. Dorsher , E. S. D. Douglas , R. W. P. Drever , J. C. Driggers , J. Dueck , J. -C. Dumas , T. Eberle , M. Edgar , M. Edwards , A. Effler , P. Ehrens , R. Engel , T. Etzel , M. Evans , T. Evans , S. Fairhurst , Y. Fan , B. F. Farr , D. Fazi , H. Fehrmann , D. Feldbaum , L. S. Finn , M. Flanigan , K. Flasch , S. Foley , C. Forrest , E. Forsi , N. Fotopoulos , M. Frede , M. Frei , Z. Frei , A. Freise , R. Frey , T. T. Fricke , D. Friedrich , P. Fritschel , V. V. Frolov , P. Fulda , M. Fyffe , J. A. Garofoli , I. Gholami , S. Ghosh , J. A. Giaime , S. Giampanis , K. D. Giardina , C. Gill , E. Goetz , L. M. Goggin , G. González , M. L. Gorodetsky , S. Goßler , C. Graef , A. Grant , S. Gras , C. Gray , R. J. S. Greenhalgh , A. M. Gretarsson , R. Grosso , H. Grote , S. Grunewald , E. K. Gustafson , R. Gustafson , B. Hage , P. Hall , J. M. Hallam , D. Hammer , G. Hammond , J. Hanks , C. Hanna , J. Hanson , J. Harms , G. M. Harry , I. W. Harry , E. D. Harstad , K. Haughian , K. Hayama , J. Heefner , I. S. Heng , A. Heptonstall , M. Hewitson , S. Hild , E. Hirose , D. Hoak , K. A. Hodge , K. Holt , D. J. Hosken , J. Hough , E. Howell , D. Hoyland , B. Hughey , S. Husa , S. H. Huttner , T. Huynh--Dinh , D. R. Ingram , R. Inta , T. Isogai , A. Ivanov , W. W. Johnson , D. I. Jones , G. Jones , R. Jones , L. Ju , P. Kalmus , V. Kalogera , S. Kandhasamy , J. Kanner , E. Katsavounidis , K. Kawabe , S. Kawamura , F. Kawazoe , W. Kells , D. G. Keppel , A. Khalaidovski , F. Y. Khalili , E. A. Khazanov , H. Kim , P. J. King , D. L. Kinzel , J. S. Kissel , S. Klimenko , V. Kondrashov , R. Kopparapu , S. Koranda , D. Kozak , T. Krause , V. Kringel , S. Krishnamurthy , B. Krishnan , G. Kuehn , J. Kullman , R. Kumar , P. Kwee , M. Landry , M. Lang , B. Lantz , N. Lastzka , A. Lazzarini , P. Leaci , J. Leong , I. Leonor , J. Li , H. Lin , P. E. Lindquist , N. A. Lockerbie , D. Lodhia , M. Lormand , P. Lu , J. Luan , M. Lubinski , A. Lucianetti , H. Lück , A. Lundgren , B. Machenschalk , M. MacInnis , M. Mageswaran , K. Mailand , C. Mak , I. Mandel , V. Mandic , S. Márka , Z. Márka , E. Maros , I. W. Martin , R. M. Martin , J. N. Marx , K. Mason , F. Matichard , L. Matone , R. A. Matzner , N. Mavalvala , R. McCarthy , D. E. McClelland , S. C. McGuire , G. McIntyre , G. McIvor , D. J. A. McKechan , G. Meadors , M. Mehmet , T. Meier , A. Melatos , A. C. Melissinos , G. Mendell , D. F. Menéndez , R. A. Mercer , L. Merill , S. Meshkov , C. Messenger , M. S. Meyer , H. Miao , J. Miller , Y. Mino , S. Mitra , V. P. Mitrofanov , G. Mitselmakher , R. Mittleman , B. Moe , S. D. Mohanty , S. R. P. Mohapatra , D. Moraru , G. Moreno , T. Morioka , K. Mors , K. Mossavi , C. MowLowry , G. Mueller , S. Mukherjee , A. Mullavey , H. Müller-Ebhardt , J. Munch , P. G. Murray , T. Nash , R. Nawrodt , J. Nelson , G. Newton , A. Nishizawa , D. Nolting , E. Ochsner , J. O'Dell , G. H. Ogin , R. G. Oldenburg , B. O'Reilly , R. O'Shaughnessy , C. Osthelder , D. J. Ottaway , R. S. Ottens , H. Overmier , B. J. Owen , A. Page , Y. Pan , C. Pankow , M. A. Papa , M. Pareja , P. Patel , M. Pedraza , L. Pekowsky , S. Penn , C. Peralta , A. Perreca , M. Pickenpack , I. M. Pinto , M. Pitkin , H. J. Pletsch , M. V. Plissi , F. Postiglione , V. Predoi , L. R. Price , M. Prijatelj , M. Principe , R. Prix , L. Prokhorov , O. Puncken , V. Quetschke , F. J. Raab , T. Radke , H. Radkins , P. Raffai , M. Rakhmanov , B. Rankins , V. Raymond , C. M. Reed , T. Reed , S. Reid , D. H. Reitze , R. Riesen , K. Riles , P. Roberts , N. A. Robertson , C. Robinson , E. L. Robinson , S. Roddy , C. Röver , J. Rollins , J. D. Romano , J. H. Romie , S. Rowan , A. Rüdiger , K. Ryan , S. Sakata , M. Sakosky , F. Salemi , L. Sammut , L. Sancho de la Jordana , V. Sandberg , V. Sannibale , L. Santamaría , G. Santostasi , S. Saraf , B. S. Sathyaprakash , S. Sato , M. Satterthwaite , P. R. Saulson , R. Savage , R. Schilling , R. Schnabel , R. Schofield , B. Schulz , B. F. Schutz , P. Schwinberg , J. Scott , S. M. Scott , A. C. Searle , F. Seifert , D. Sellers , A. S. Sengupta , A. Sergeev , D. Shaddock , B. Shapiro , P. Shawhan , D. H. Shoemaker , A. Sibley , X. Siemens , D. Sigg , A. Singer , A. M. Sintes , G. Skelton , B. J. J. Slagmolen , J. Slutsky , J. R. Smith , M. R. Smith , N. D. Smith , K. Somiya , B. Sorazu , F. C. Speirits , A. J. Stein , L. C. Stein , S. Steinlechner , S. Steplewski , A. Stochino , R. Stone , K. A. Strain , S. Strigin , A. Stroeer , A. L. Stuver , T. Z. Summerscales , M. Sung , S. Susmithan , P. J. Sutton , D. Talukder , D. B. Tanner , S. P. Tarabrin , J. R. Taylor , R. Taylor , P. Thomas , K. A. Thorne , K. S. Thorne , E. Thrane , A. Thüring , C. Titsler , K. V. Tokmakov , C. Torres , C. I. Torrie , G. Traylor , M. Trias , K. Tseng , D. Ugolini , K. Urbanek , H. Vahlbruch , B. Vaishnav , M. Vallisneri , C. Van Den Broeck , M. V. van der Sluys , A. A. van Veggel , S. Vass , R. Vaulin , A. Vecchio , J. Veitch , P. J. Veitch , C. Veltkamp , A. Villar , C. Vorvick , S. P. Vyachanin , S. J. Waldman , L. Wallace , A. Wanner , R. L. Ward , P. Wei , M. Weinert , A. J. Weinstein , R. Weiss , L. Wen , S. Wen , P. Wessels , M. West , T. Westphal , K. Wette , J. T. Whelan , S. E. Whitcomb , D. J. White , B. F. Whiting , C. Wilkinson , P. A. Willems , L. Williams , B. Willke , L. Winkelmann , W. Winkler , C. C. Wipf , A. G. Wiseman , G. Woan , R. Wooley , J. Worden , I. Yakushin , H. Yamamoto , K. Yamamoto , D. Yeaton-Massey , S. Yoshida , P. P. Yu , M. Zanolin , L. Zhang , Z. Zhang , C. Zhao , N. Zotov , M. E. Zucker , J. Zweizig

Microseismic Noise Mitigation with Machine Learning for Advanced LIGO

The unprecedented sensitivity of the Laser Interferometer Gravitational-Wave Observatory, which enables the detection of distant astrophysical sources, also renders the detectors highly susceptible to low-frequency ground motion. Persistent…

General Relativity and Quantum Cosmology · Physics 2025-11-26 Christina Reissel , Devin Lai , Shivanshu Dwivedi , Edgard Bonilla , Claudia Geer , Christopher Wipf , Richard Mittleman , Philip Harris , Eyal Schwartz , Dovi Poznanski , Brian Lantz , Erik Katsavounidis

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

LIGO: The Laser Interferometer Gravitational-Wave Observatory

The goal of the Laser Interferometric Gravitational-Wave Observatory (LIGO) is to detect and study gravitational waves of astrophysical origin. Direct detection of gravitational waves holds the promise of testing general relativity in the…

General Relativity and Quantum Cosmology · Physics 2009-09-29 The LIGO Scientific Collaboration , B. Abbott

The Advanced LIGO Input Optics

The Advanced LIGO gravitational wave detectors are nearing their design sensitivity and should begin taking meaningful astrophysical data in the fall of 2015. These resonant optical interferometers will have unprecedented sensitivity to the…

Instrumentation and Detectors · Physics 2016-02-17 Chris Mueller , Muzammil Arain , Giacomo Ciani , Ryan DeRosa , Anamaria Effler , David Feldbaum , Valery Frolov , Paul Fulda , Joseph Gleason , Matthew Heintze , Eleanor King , Keiko Kokeyama , William Korth , Rodica Martin , Adam Mullavey , Jan Poeld , Volker Quetschke , David Reitze , David Tanner , Luke Williams , Guido Mueller

Analysis of First LIGO Science Data for Stochastic Gravitational Waves

We present the analysis of between 50 and 100 hrs of coincident interferometric strain data used to search for and establish an upper limit on a stochastic background of gravitational radiation. These data come from the first LIGO science…

General Relativity and Quantum Cosmology · Physics 2008-11-26 LIGO Scientific Collaboration , B. Abbott

The External Calibrator for Hydrogen Observatories

Multiple instruments are pursuing constraints on dark energy, observing reionization and opening a window on the dark ages through the detection and characterization of the 21cm hydrogen line across the redshift spectrum, from nearby to…

Instrumentation and Methods for Astrophysics · Physics 2016-10-11 Daniel C. Jacobs , Jacob Burba , Judd Bowman , Abraham R. Neben , Benjamin Stinnett , Lauren Turner

The Polarimetric and Helioseismic Imager on Solar Orbiter

This paper describes the Polarimetric and Helioseismic Imager on the Solar Orbiter mission (SO/PHI), the first magnetograph and helioseismology instrument to observe the Sun from outside the Sun-Earth line. It is the key instrument meant to…

Instrumentation and Methods for Astrophysics · Physics 2020-09-30 S. K. Solanki , J. C. del Toro Iniesta , J. Woch , A. Gandorfer , J. Hirzberger , A. Alvarez-Herrero , T. Appourchaux , V. Martínez Pillet , I. Pérez-Grande , E. Sanchis Kilders , W. Schmidt , J. M. Gómez Cama , H. Michalik , W. Deutsch , G. Fernandez-Rico , B. Grauf , L. Gizon , K. Heerlein , M. Kolleck , A. Lagg , R. Meller , R. Müller , U. Schühle , J. Staub , K. Albert , M. Alvarez Copano , U. Beckmann , J. Bischoff , D. Busse , R. Enge , S. Frahm , D. Germerott , L. Guerrero , B. Löptien , T. Meierdierks , D. Oberdorfer , I. Papagiannaki , S. Ramanath , J. Schou , S. Werner , D. Yang , A. Zerr , M. Bergmann , J. Bochmann , J. Heinrichs , S. Meyer , M. Monecke , M. -F. Müller , M. Sperling , D. Álvarez Garcí a , B. Aparicio , M. Balaguer Jiménez , L. R. Bellot Rubio , J. P. Cobos Carracosa , F. Girela , D. Hernández Expósito , M. Herranz , P. Labrousse , A. López Jiménez , D. Orozco Suárez , J. L. Ramos , J. Barandiarán , L. Bastide , C. Campuzano , M. Cebollero , B. Dávila , A. Fernández-Medina , P. García Parejo , D. Garranzo-García , H. Laguna , J. A. Martín , R. Navarro , A. Núñez Peral , M. Royo , A. Sánchez , M. Silva-López , I. Vera , J. Villanueva , J. -J. Fourmond , C. Ruiz de Galarreta , M. Bouzit , V. Hervier , J. C. Le Clec'h , N. Szwec , M. Chaigneau , V. Buttice , C. Dominguez-Tagle , A. Philippon , P. Boumier , R. Le Cocguen , G. Baranjuk , A. Bell , Th. Berkefeld , J. Baumgartner , F. Heidecke , T. Maue , E. Nakai , T. Scheiffelen , M. Sigwarth , D. Soltau , R. Volkmer , J. Blanco Rodríguez , V. Domingo , A. Ferreres Sabater , J. L. Gasent Blesa , P. Rodríguez Martínez , D. Osorno Caudel , J. Bosch , A. Casas , M. Carmona , A. Herms , D. Roma , G. Alonso , A. G\' omez-Sanjuan , J. Piqueras , I. Torralbo , B. Fiethe , Y. Guan , T. Lange , H. Michel , J. A. Bonet , S. Fahmy , D. Müller , I. Zouganelis

LIGO's "Science Reach"

Technical discussions of the Laser Interferometer Gravitational Wave Observatory (LIGO) sensitivity often focus on its effective sensitivity to gravitational waves in a given band; nevertheless, the goal of the LIGO Project is to ``do…

General Relativity and Quantum Cosmology · Physics 2009-11-07 Lee Samuel Finn

Helioseismology with Solar Orbiter

The Solar Orbiter mission, to be launched in July 2017, will carry a suite of remote sensing and in-situ instruments, including the Polarimetric and Helioseismic Imager (PHI). PHI will deliver high-cadence images of the Sun in intensity and…

Solar and Stellar Astrophysics · Physics 2015-06-22 Björn Löptien , Aaron C. Birch , Laurent Gizon , Jesper Schou , Thierry Appourchaux , Julián Blanco Rodríguez , Paul S. Cally , Carlos Dominguez-Tagle , Achim Gandorfer , Frank Hill , Johann Hirzberger , Philip H. Scherrer , Sami K. Solanki

Suspension platform interferometer for the AEI 10\,m prototype: concept, design and optical layout

At present a 10\,m prototype interferometer facility is being set up at the AEI Hannover. One unique feature of the prototype will be the suspension platform interferometer (SPI). The purpose of the SPI is to monitor and stabilise the…

Optics · Physics 2015-06-03 Katrin Dahl , Oliver Kranz , Gerhard Heinzel , Benno Willke , Kenneth A Strain , Stefan Goßler , Karsten Danzmann

Demonstration of a next-generation wavefront actuator for gravitational-wave detection

In the last decade, the Laser Interferometer Gravitational-Wave Observatory (LIGO) and the European Virgo observatory have opened a new observational window on the universe. These cavity-enhanced laser interferometers sense spacetime…

Instrumentation and Methods for Astrophysics · Physics 2025-09-11 Tyler Rosauer , Huy Tuong Cao , Mohak Bhattacharya , Peter Carney , Luke Johnson , Shane Levin , Cynthia Liang , Xuesi Ma , Luis Martin Gutierrez , Michael Padilla , Liu Tao , Aiden Wilkin , Aidan Brooks , Jonathan W. Richardson

The LIGO Suspended Optic Digital Control System

The original LIGO suspension control system [1] used analog circuitry to implement the closed loop damping required for local control of each the suspended optics. Recent developments in analog to digital converters (ADC), digital to analog…

Optics · Physics 2007-05-23 J. Heefner , R. Bork

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

The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: Overview and Performance

The Helioseismic and Magnetic Imager (HMI) began near-continuous full-disk solar measurements on 1 May 2010 from the Solar Dynamics Observatory (SDO). An automated processing pipeline keeps pace with observations to produce observable…

Solar and Stellar Astrophysics · Physics 2014-04-08 J. Todd Hoeksema , Yang Liu , Keiji Hayashi , Xudong Sun , Jesper Schou , Sebastien Couvidat , Aimee Norton , Monica Bobra , Rebecca Centeno , K. D. Leka , Graham Barnes , Michael J. Turmon

Observation of Parametric Instability in Advanced LIGO

Parametric instabilities have long been studied as a potentially limiting effect in high-power interferometric gravitational wave detectors. Until now, however, these instabilities have never been observed in a kilometer-scale…

Instrumentation and Methods for Astrophysics · Physics 2015-04-29 Matthew Evans , Slawek Gras , Peter Fritschel , John Miller , Lisa Barsotti , Denis Martynov , Aidan Brooks , Dennis Coyne , Rich Abbott , Rana Adhikari , Koji Arai , Rolf Bork , Bill Kells , Jameson Rollins , Nicolas Smith-Lefebvre , Gabriele Vajente , Hiroaki Yamamoto , Ryan Derosa , Anamaria Effler , Keiko Kokeyama , Joseph Betzweiser , Valera Frolov , Adam Mullavey , Sheila Dwyer , Kiwamu Izumi , Keita Kawabe , Daniel Sigg , Stefan Ballmer , Thomas J. Massinger , Alexa Staley , Chris Mueller , Hartmut Grote , Robert Ward , Eleanor King , Keith Thorne , Michael Thomas , Carl Adams , Stuart Aston , Janeen Romie , Arnaud Pele , Matthew Heinze , David Blair , Li Ju , Chunnong Zhao

Optimizing Active Seismic Isolation Systems in Gravitational-Wave Detectors

Gravitational wave detectors such as KAGRA, a 3-km long underground laser interferometer in Japan, require elaborate passive and active seismic isolation of their mirrors. With the aim of detecting passing gravitational waves that create a…

Instrumentation and Detectors · Physics 2025-06-18 Terrence Tsang , Fabián Erasmo Peña Arellano , Takafumi Ushiba , Ryutaro Takahashi , Yoichi Aso , Katherine Dooley

Observables Processing for the Helioseismic and Magnetic Imager Instrument on the Solar Dynamics Observatory

NASA's Solar Dynamics Observatory (SDO) was launched 11 February 2010 with 3 instruments on board, including the Helioseismic and Magnetic Imager (HMI). Since beginning normal operations on 1 May 2010, HMI has observed the Sun's entire…

Solar and Stellar Astrophysics · Physics 2016-08-17 Sebastien Couvidat , Jesper Schou , J. Todd Hoeksema , Rick S. Bogart , Rock I. Bush , Tom L. Duvall , Yang Liu , Aimee A. Norton , Philip H. Scherrer

Characterization of the Virgo Seismic Environment

The Virgo gravitational wave detector is an interferometer (ITF) with 3km arms located in Pisa, Italy. From July to October 2010, Virgo performed its third science run (VSR3) in coincidence with the LIGO detectors. Despite several…

General Relativity and Quantum Cosmology · Physics 2011-08-09 The Virgo Collaboration , T. Accadia , F. Acernese , P. Astone , G. Ballardin , F. Barone , M. Barsuglia , A. Basti , Th. S. Bauer , M. Bebronne , M. G. Beker , A. Belletoile , M. Bitossi , M. A. Bizouard , M. Blom , F. Bondu , L. Bonelli , R. Bonnand , V. Boschi , L. Bosi , B. Bouhou , S. Braccini , C. Bradaschia , M. Branchesi , T. Briant , A. Brillet , V. Brisson , T. Bulik , H. J. Bulten , D. Buskulic , C. Buy , G. Cagnoli , E. Calloni , B. Canuel , F. Carbognani , F. Cavalier , R. Cavalieri , G. Cella , E. Cesarini , O. Chaibi , E. Chassande-Mottin , A. Chincarini , A. Chiummo , F. Cleva , E. Coccia , P. -F. Cohadon , C. N. Colacino , J. Colas , A. Colla , M. Colombini , A. Conte , M. Coughlin , J. -P. Coulon , E. Cuoco , S. DAntonio , V. Dattilo , M. Davier , R. Day , R. De Rosa , G. Debreczeni , W. Del Pozzo , M. del Prete , L. Di Fiore , A. Di Lieto , M. Di Paolo Emilio , A. Di Virgilio , A. Dietz , M. Drago , G. Endroczi , V. Fafone , I. Ferrante , F. Fidecaro , I. Fiori , R. Flaminio , L. A. Forte , J. -D. Fournier , J. Franc , S. Frasca , F. Frasconi , M. Galimberti , L. Gammaitoni , F. Garufi , M. E. Gaspar , G. Gemme , E. Genin , A. Gennai , A. Giazotto , R. Gouaty , M. Granata , C. Greverie , G. M. Guidi , J. -F. Hayau , A. Heidmann , H. Heitmann , P. Hello , P. Jaranowski , I. Kowalska , A. Krolak , N. Leroy , N. Letendre , T. G. F. Li , N. Liguori , M. Lorenzini , V. Loriette , G. Losurdo , E. Majorana , I. Maksimovic , N. Man , M. Mantovani , F. Marchesoni , F. Marion , J. Marque , F. Martelli , A. Masserot , C. Michel , L. Milano , Y. Minenkov , M. Mohan , N. Morgado , A. Morgia , S. Mosca , B. Mours , L. Naticchioni , F. Nocera , G. Pagliaroli , L. Palladino , C. Palomba , F. Paoletti , M. Parisi , A. Pasqualetti , R. Passaquieti , D. Passuello , G. Persichetti , F. Piergiovanni , M. Pietka , L. Pinard , R. Poggiani , M. Prato , G. A. Prodi , M. Punturo , P. Puppo , D. S. Rabeling , I. Racz , P. Rapagnani , V. Re , T. Regimbau , F. Ricci , F. Robinet , A. Rocchi , L. Rolland , R. Romano , D. Rosinska , P. Ruggi , B. Sassolas , D. Sentenac , L. Sperandio , R. Sturani , B. Swinkels , M. Tacca , L. Taffarello , A. Toncelli , M. Tonelli , O. Torre , E. Tournefier , F. Travasso , G. Vajente , J. F. J. van den Brand , C. Van Den Broeck , S. van der Putten , M. Vasuth , M. Vavoulidis , G. Vedovato , D. Verkindt , F. Vetrano , A. Vicere , J. -Y. Vinet , S. Vitale , H. Vocca , R. L. Ward , M. Was , M. Yvert , A. Zadrozny , J. -P. Zendri