First joint observation by the underground gravitational-wave detector KAGRA with GEO 600
Authors:   The LIGO Scientific Collaboration,   The Virgo Collaboration,   The KAGRA Collaboration, Abbott R , Abe H , Acernese F , Ackley K , Adhikari N , Adhikari R X , Adkins V K , Adya V B , Affeldt C , Agarwal D , Agathos M , Agatsuma K , Aggarwal N , Aguiar O D , Aiello L , Ain A , Ajith P , Akutsu T , Albanesi S , Alfaidi R A , Allocca A , Altin P A , Amato A , Anand C , Anand S , Ananyeva A , Anderson S B , Anderson W G , Ando M , Andrade T , Andres N , Andrés-Carcasona M , Andrić T , Angelova S V , Ansoldi S , Antelis J M , Antier S , Apostolatos T , Appavuravther E Z , Appert S , Apple S K , Arai K , Araya A , Araya M C , Areeda J S , Arène M , Aritomi N , Arnaud N , Arogeti M , Aronson S M , Arun K G , Asada H , Asali Y , Ashton G , Aso Y , Assiduo M , Melo S Assis de Souza , Aston S M , Astone P , Aubin F , AultONeal K , Austin C , Babak S , Badaracco F , Bader M K M , Badger C , Bae S , Bae Y , Baer A M , Bagnasco S , Bai Y , Baird J , Bajpai R , Baka T , Ball M , Ballardin G , Ballmer S W , Balsamo A , Baltus G , Banagiri S , Banerjee B , Bankar D , Barayoga J C , Barbieri C , Barish B C , Barker D , Barneo P , Barone F , Barr B , Barsotti L , Barsuglia M , Barta D , Bartlett J , Barton M A , Bartos I , Basak S , Bassiri R , Basti A , Bawaj M , Bayley J C , Bazzan M , Becher B R , Bécsy B , Bedakihale V M , Beirnaert F , Bejger M , Belahcene I , Benedetto V , Beniwal D , Benjamin M G , Bennett T F , Bentley J D , BenYaala M , Bera S , Berbel M , Bergamin F , Berger B K , Bernuzzi S , Berry C P L , Bersanetti D , Bertolini A , Betzwieser J , Beveridge D , Bhandare R , Bhandari A V , Bhardwaj U , Bhatt R , Bhattacharjee D , Bhaumik S , Bianchi A , Bilenko I A , Billingsley G , Bini S , Birney R , Birnholtz O , Biscans S , Bischi M , Biscoveanu S , Bisht A , Biswas B , Bitossi M , Bizouard M-A , Blackburn J K , Blair C D , Blair D G , Blair R M , Bobba F , Bode N , Boër M , Bogaert G , Boldrini M , Bolingbroke G N , Bonavena L D , Bondu F , Bonilla E , Bonnand R , Booker P , Boom B A , Bork R , Boschi V , Bose N , Bose S , Bossilkov V , Boudart V , Bouffanais Y , Bozzi A , Bradaschia C , Brady P R , Bramley A , Branch A , Branchesi M , Brau J E , Breschi M , Briant T , Briggs J H , Brillet A , Brinkmann M , Brockill P , Brooks A F , Brooks J , Brown D D , Brunett S , Bruno G , Bruntz R , Bryant J , Bucci F , Bulik T , Bulten H J , Buonanno A , Burtnyk K , Buscicchio R , Buskulic D , Buy C , Byer R L , Davies G S Cabourn , Cabras G , Cabrita R , Cadonati L , Caesar M , Cagnoli G , Cahillane C , Bustillo J Calderón , Callaghan J D , Callister T A , Calloni E , Cameron J , Camp J B , Canepa M , Canevarolo S , Cannavacciuolo M , Cannon K C , Cao H , Cao Z , Capocasa E , Capote E , Carapella G , Carbognani F , Carlassara M , Carlin J B , Carney M F , Carpinelli M , Carrillo G , Carullo G , Carver T L , Diaz J Casanueva , Casentini C , Castaldi G , Caudill S , Cavaglià M , Cavalier F , Cavalieri R , Cella G , Cerdá-Durán P , Cesarini E , Chaibi W , Subrahmanya S Chalathadka , Champion E , Chan C-H , Chan C , Chan C L , Chan K , Chan M , Chandra K , Chang I P , Chanial P , Chao S , Chapman-Bird C , Charlton P , Chase E A , Chassande-Mottin E , Chatterjee C , Chatterjee Debarati , Chatterjee Deep , Chaturvedi M , Chaty S , Chen C , Chen D , Chen H Y , Chen J , Chen K , Chen X , Chen Y-B , Chen Y-R , Chen Z , Cheng H , Cheong C K , Cheung H Y , Chia H Y , Chiadini F , Chiang C-Y , Chiarini G , Chierici R , Chincarini A , Chiofalo M L , Chiummo A , Choudhary R K , Choudhary S , Christensen N , Chu Q , Chu Y-K , Chua S S Y , Chung K W , Ciani G , Ciecielag P , Cieślar M , Cifaldi M , Ciobanu A A , Ciolfi R , Cipriano F , Clara F , Clark J A , Clearwater P , Clesse S , Cleva F , Coccia E , Codazzo E , Cohadon P-F , Cohen D E , Colleoni M , Collette C G , Colombo A , Colpi M , Compton C M , Jr. M Constancio , Conti L , Cooper S J , Corban P , Corbitt T R , Cordero-Carrión I , Corezzi S , Corley K R , Cornish N J , Corre D , Corsi A , Cortese S , Costa C A , Cotesta R , Cottingham R , Coughlin M W , Coulon J-P , Countryman S T , Cousins B , Couvares P , Coward D M , Cowart M J , Coyne D C , Coyne R , Creighton J D E , Creighton T D , Criswell A W , Croquette M , Crowder S G , Cudell J R , Cullen T J , Cumming A , Cummings R , Cunningham L , Cuoco E , Curyło M , Dabadie P , Canton T Dal , Dall’Osso S , Dálya G , Dana A , D’Angelo B , Danilishin S , D’Antonio S , Danzmann K , Darsow-Fromm C , Dasgupta A , Datrier L E H , Datta Sayak , Datta Sayantani , Dattilo V , Dave I , Davier M , Davis D , Davis M C , Daw E J , Dean R , DeBra D , Deenadayalan M , Degallaix J , De Laurentis M , Deléglise S , Del Favero V , De Lillo F , De Lillo N , Dell’Aquila D , Del Pozzo W , DeMarchi L M , De Matteis F , D’Emilio V , Demos N , Dent T , Depasse A , De Pietri R , De Rosa R , De Rossi C , DeSalvo R , De Simone R , Dhurandhar S , Díaz M C , Didio N A , Dietrich T , Fiore L Di , Fronzo C Di , Giorgio C Di , Giovanni F Di , Giovanni M Di , Girolamo T Di , Lieto A Di , Michele A Di , Ding B , Pace S Di , Palma I Di , Renzo F Di , Divakarla A K , Dmitriev A , Doctor Z , Donahue L , D’Onofrio L , Donovan F , Dooley K L , Doravari S , Drago M , Driggers J C , Drori Y , Ducoin J-G , Dupej P , Dupletsa U , Durante O , D’Urso D , Duverne P-A , Dwyer S E , Eassa C , Easter P J , Ebersold M , Eckhardt T , Eddolls G , Edelman B , Edo T B , Edy O , Effler A , Eguchi S , Eichholz J , Eikenberry S S , Eisenmann M , Eisenstein R A , Ejlli A , Engelby E , Enomoto Y , Errico L , Essick R C , Estellés H , Estevez D , Etienne Z , Etzel T , Evans M , Evans T M , Evstafyeva T , Ewing B E , Fabrizi F , Faedi F , Fafone V , Fair H , Fairhurst S , Fan P C , Farah A M , Farinon S , Farr B , Farr W M , Fauchon-Jones E J , Favaro G , Favata M , Fays M , Fazio M , Feicht J , Fejer M M , Fenyvesi E , Ferguson D L , Fernandez-Galiana A , Ferrante I , Ferreira T A , Fidecaro F , Figura P , Fiori A , Fiori I , Fishbach M , Fisher R P , Fittipaldi R , Fiumara V , Flaminio R , Floden E , Fong H K , Font J A , Fornal B , Forsyth P W F , Franke A , Frasca S , Frasconi F , Freed J P , Frei Z , Freise A , Freitas O , Frey R , Frolov V V , Fronzé G G , Fujii Y , Fujikawa Y , Fujimoto Y , Fulda P , Fyffe M , Gabbard H A , Gabella W E , Gadre B U , Gair J R , Gais J , Galaudage S , Gamba R , Ganapathy D , Ganguly A , Gao D , Gaonkar S G , Garaventa B , Núñez C García , García-Quirós C , Garufi F , Gateley B , Gayathri V , Ge G-G , Gemme G , Gennai A , George J , Gerberding O , Gergely L , Gewecke P , Ghonge S , Ghosh Abhirup , Ghosh Archisman , Ghosh Shaon , Ghosh Shrobana , Ghosh Tathagata , Giacomazzo B , Giacoppo L , Giaime J A , Giardina K D , Gibson D R , Gier C , Giesler M , Giri P , Gissi F , Gkaitatzis S , Glanzer J , Gleckl A E , Godwin P , Goetz E , Goetz R , Gohlke N , Golomb J , Goncharov B , González G , Gosselin M , Gouaty R , Gould D W , Goyal S , Grace B , Grado A , Graham V , Granata M , Granata V , Grant A , Gras S , Grassia P , Gray C , Gray R , Greco G , Green A C , Green R , Gretarsson A M , Gretarsson E M , Griffith D , Griffiths W L , Griggs H L , Grignani G , Grimaldi A , Grimes E , Grimm S J , Grote H , Grunewald S , Gruning P , Gruson A S , Guerra D , Guidi G M , Guimaraes A R , Guixé G , Gulati H K , Gunny A M , Guo H-K , Guo Y , Gupta Anchal , Gupta Anuradha , Gupta I M , Gupta P , Gupta S K , Gustafson R , Guzman F , Ha S , Hadiputrawan I P W , Haegel L , Haino S , Halim O , Hall E D , Hamilton E Z , Hammond G , Han W-B , Haney M , Hanks J , Hanna C , Hannam M D , Hannuksela O , Hansen H , Hansen T J , Hanson J , Harder T , Haris K , Harms J , Harry G M , Harry I W , Hartwig D , Hasegawa K , Haskell B , Haster C-J , Hathaway J S , Hattori K , Haughian K , Hayakawa H , Hayama K , Hayes F J , Healy J , Heidmann A , Heidt A , Heintze M C , Heinze J , Heinzel J , Heitmann H , Hellman F , Hello P , Helmling-Cornell A F , Hemming G , Hendry M , Heng I S , Hennes E , Hennig J , Hennig M H , Henshaw C , Hernandez A G , Vivanco F Hernandez , Heurs M , Hewitt A L , Higginbotham S , Hild S , Hill P , Himemoto Y , Hines A S , Hirata N , Hirose C , Ho T-C , Hochheim S , Hofman D , Hohmann J N , Holcomb D G , Holland N A , Hollows I J , Holmes Z J , Holt K , Holz D E , Hong Q , Hough J , Hourihane S , Howell E J , Hoy C G , Hoyland D , Hreibi A , Hsieh B-H , Hsieh H-F , Hsiung C , Hsu Y , Huang H-Y , Huang P , Huang Y-C , Huang Y-J , Huang Yiting , Huang Yiwen , Hübner M T , Huddart A D , Hughey B , Hui D C Y , Hui V , Husa S , Huttner S H , Huxford R , Huynh-Dinh T , Ide S , Idzkowski B , Iess A , Inayoshi K , Inoue Y , Iosif P , Isi M , Isleif K , Ito K , Itoh Y , Iyer B R , JaberianHamedan V , Jacqmin T , Jacquet P-E , Jadhav S J , Jadhav S P , Jain T , James A L , Jan A Z , Jani K , Janquart J , Janssens K , Janthalur N N , Jaranowski P , Jariwala D , Jaume R , Jenkins A C , Jenner K , Jeon C , Jia W , Jiang J , Jin H-B , Johns G R , Johnston R , Jones A W , Jones D I , Jones P , Jones R , Joshi P , Ju L , Jue A , Jung P , Jung K , Junker J , Juste V , Kaihotsu K , Kajita T , Kakizaki M , Kalaghatgi C V , Kalogera V , Kamai B , Kamiizumi M , Kanda N , Kandhasamy S , Kang G , Kanner J B , Kao Y , Kapadia S J , Kapasi D P , Karathanasis C , Karki S , Kashyap R , Kasprzack M , Kastaun W , Kato T , Katsanevas S , Katsavounidis E , Katzman W , Kaur T , Kawabe K , Kawaguchi K , Kéfélian F , Keitel D , Key J S , Khadka S , Khalili F Y , Khan S , Khanam T , Khazanov E A , Khetan N , Khursheed M , Kijbunchoo N , Kim A , Kim C , Kim J C , Kim J , Kim K , Kim W S , Kim Y-M , Kimball C , Kimura N , Kinley-Hanlon M , Kirchhoff R , Kissel J S , Klimenko S , Klinger T , Knee A M , Knowles T D , Knust N , Knyazev E , Kobayashi Y , Koch P , Koekoek G , Kohri K , Kokeyama K , Koley S , Kolitsidou P , Kolstein M , Komori K , Kondrashov V , Kong A K H , Kontos A , Koper N , Korobko M , Kovalam M , Koyama N , Kozak D B , Kozakai C , Kringel V , Krishnendu N V , Królak A , Kuehn G , Kuei F , Kuijer P , Kulkarni S , Kumar A , Kumar Prayush , Kumar Rahul , Kumar Rakesh , Kume J , Kuns K , Kuromiya Y , Kuroyanagi S , Kwak K , Lacaille G , Lagabbe P , Laghi D , Lalande E , Lalleman M , Lam T L , Lamberts A , Landry M , Lane B B , Lang R N , Lange J , Lantz B , Rosa I La , Lartaux-Vollard A , Lasky P D , Laxen M , Lazzarini A , Lazzaro C , Leaci P , Leavey S , LeBohec S , Lecoeuche Y K , Lee E , Lee H M , Lee H W , Lee K , Lee R , Legred I N , Lehmann J , Lemaître A , Lenti M , Leonardi M , Leonova E , Leroy N , Letendre N , Levesque C , Levin Y , Leviton J N , Leyde K , Li A K Y , Li B , Li J , Li K L , Li P , Li T G F , Li X , Lin C-Y , Lin E T , Lin F-K , Lin F-L , Lin H L , Lin L C-C , Linde F , Linker S D , Linley J N , Littenberg T B , Liu G C , Liu J , Liu K , Liu X , Llamas F , Lo R K L , Lo T , London L T , Longo A , Lopez D , Portilla M Lopez , Lorenzini M , Loriette V , Lormand M , Losurdo G , Lott T P , Lough J D , Lousto C O , Lovelace G , Lucaccioni J F , Lück H , Lumaca D , Lundgren A P , Luo L-W , Lynam J E , Ma’arif M , Macas R , Machtinger J B , MacInnis M , Macleod D M , MacMillan I A O , Macquet A , Hernandez I Magaña , Magazzù C , Magee R M , Maggiore R , Magnozzi M , Mahesh S , Majorana E , Maksimovic I , Maliakal S , Malik A , Man N , Mandic V , Mangano V , Mansell G L , Manske M , Mantovani M , Mapelli M , Marchesoni F , Pina D Marín , Marion F , Mark Z , Márka S , Márka Z , Markakis C , Markosyan A S , Markowitz A , Maros E , Marquina A , Marsat S , Martelli F , Martin I W , Martin R M , Martinez M , Martinez V A , Martinez V , Martinovic K , Martynov D V , Marx E J , Masalehdan H , Mason K , Massera E , Masserot A , Masso-Reid M , Mastrogiovanni S , Matas A , Mateu-Lucena M , Matichard F , Matiushechkina M , Mavalvala N , McCann J J , McCarthy R , McClelland D E , McClincy P K , McCormick S , McCuller L , McGhee G I , McGuire S C , McIsaac C , McIver J , McRae T , McWilliams S T , Meacher D , Mehmet M , Mehta A K , Meijer Q , Melatos A , Melchor D A , Mendell G , Menendez-Vazquez A , Menoni C S , Mercer R A , Mereni L , Merfeld K , Merilh E L , Merritt J D , Merzougui M , Meshkov S , Messenger C , Messick C , Meyers P M , Meylahn F , Mhaske A , Miani A , Miao H , Michaloliakos I , Michel C , Michimura Y , Middleton H , Mihaylov D P , Milano L , Miller A L , Miller A , Miller B , Millhouse M , Mills J C , Milotti E , Minenkov Y , Mio N , Mir Ll M , Miravet-Tenés M , Mishkin A , Mishra C , Mishra T , Mistry T , Mitra S , Mitrofanov V P , Mitselmakher G , Mittleman R , Miyakawa O , Miyo K , Miyoki S , Mo Geoffrey , Modafferi L M , Moguel E , Mogushi K , Mohapatra S R P , Mohite S R , Molina I , Molina-Ruiz M , Mondin M , Montani M , Moore C J , Moragues J , Moraru D , Morawski F , More A , Moreno C , Moreno G , Mori Y , Morisaki S , Morisue N , Moriwaki Y , Mours B , Mow-Lowry C M , Mozzon S , Muciaccia F , Mukherjee Arunava , Mukherjee D , Mukherjee Soma , Mukherjee Subroto , Mukherjee Suvodip , Mukund N , Mullavey A , Munch J , Muñiz E A , Murray P G , Musenich R , Muusse S , Nadji S L , Nagano K , Nagar A , Nakamura K , Nakano H , Nakano M , Nakayama Y , Napolano V , Nardecchia I , Narikawa T , Narola H , Naticchioni L , Nayak B , Nayak R K , Neil B F , Neilson J , Nelson A , Nelson T J N , Nery M , Neubauer P , Neunzert A , Ng K Y , Ng S W S , Nguyen C , Nguyen P , Nguyen T , Quynh L Nguyen , Ni J , Ni W-T , Nichols S A , Nishimoto T , Nishizawa A , Nissanke S , Nitoglia E , Nocera F , Norman M , North C , Nozaki S , Nurbek G , Nuttall L K , Obayashi Y , Oberling J , O’Brien B D , O’Dell J , Oelker E , Ogaki W , Oganesyan G , Oh J J , Oh K , Oh S H , Ohashi M , Ohashi T , Ohkawa M , Ohme F , Ohta H , Okada M A , Okutani Y , Olivetto C , Oohara K , Oram R , O’Reilly B , Ormiston R G , Ormsby N D , O’Shaughnessy R , O’Shea E , Oshino S , Ossokine S , Osthelder C , Otabe S , Ottaway D J , Overmier H , Pace A E , Pagano G , Pagano R , Page M A , Pagliaroli G , Pai A , Pai S A , Pal S , Palamos J R , Palashov O , Palomba C , Pan H , Pan K-C , Panda P K , Pang P T H , Pankow C , Pannarale F , Pant B C , Panther F H , Paoletti F , Paoli A , Paolone A , Pappas G , Parisi A , Park H , Park J , Parker W , Pascucci D , Pasqualetti A , Passaquieti R , Passuello D , Patel M , Pathak M , Patricelli B , Patron A S , Paul S , Payne E , Pedraza M , Pedurand R , Pegoraro M , Pele A , Arellano F E Peña , Penano S , Penn S , Perego A , Pereira A , Pereira T , Perez C J , Périgois C , Perkins C C , Perreca A , Perriès S , Pesios D , Petermann J , Petterson D , Pfeiffer H P , Pham H , Pham K A , Phukon K S , Phurailatpam H , Piccinni O J , Pichot M , Piendibene M , Piergiovanni F , Pierini L , Pierro V , Pillant G , Pillas M , Pilo F , Pinard L , Pineda-Bosque C , Pinto I M , Pinto M , Piotrzkowski B J , Piotrzkowski K , Pirello M , Pitkin M D , Placidi A , Placidi E , Planas M L , Plastino W , Pluchar C , Poggiani R , Polini E , Pong D Y T , Ponrathnam S , Porter E K , Poulton R , Poverman A , Powell J , Pracchia M , Pradier T , Prajapati A K , Prasai K , Prasanna R , Pratten G , Principe M , Prodi G A , Prokhorov L , Prosposito P , Prudenzi L , Puecher A , Punturo M , Puosi F , Puppo P , Pürrer M , Qi H , Quartey N , Quetschke V , Quinonez P J , Quitzow-James R , Raab F J , Raaijmakers G , Radkins H , Radulesco N , Raffai P , Rail S X , Raja S , Rajan C , Ramirez K E , Ramirez T D , Ramos-Buades A , Rana J , Rapagnani P , Ray A , Raymond V , Raza N , Razzano M , Read J , Rees L A , Regimbau T , Rei L , Reid S , Reid S W , Reitze D H , Relton P , Renzini A , Rettegno P , Revenu B , Reza A , Rezac M , Ricci F , Richards D , Richardson J W , Richardson L , Riemenschneider G , Riles K , Rinaldi S , Rink K , Robertson N A , Robie R , Robinet F , Rocchi A , Rodriguez S , Rolland L , Rollins J G , Romanelli M , Romano R , Romel C L , Romero A , Romero-Shaw I M , Romie J H , Ronchini S , Rosa L , Rose C A , Rosińska D , Ross M P , Rowan S , Rowlinson S J , Roy S , Roy Santosh , Roy Soumen , Rozza D , Ruggi P , Ruiz-Rocha K , Ryan K , Sachdev S , Sadecki T , Sadiq J , Saha S , Saito Y , Sakai K , Sakellariadou M , Sakon S , Salafia O S , Salces-Carcoba F , Salconi L , Saleem M , Salemi F , Samajdar A , Sanchez E J , Sanchez J H , Sanchez L E , Sanchis-Gual N , Sanders J R , Sanuy A , Saravanan T R , Sarin N , Sassolas B , Satari H , Sauter O , Savage R L , Savant V , Sawada T , Sawant H L , Sayah S , Schaetzl D , Scheel M , Scheuer J , Schiworski M G , Schmidt P , Schmidt S , Schnabel R , Schneewind M , Schofield R M S , Schönbeck A , Schulte B W , Schutz B F , Schwartz E , Scott J , Scott S M , Seglar-Arroyo M , Sekiguchi Y , Sellers D , Sengupta A S , Sentenac D , Seo E G , Sequino V , Sergeev A , Setyawati Y , Shaffer T , Shahriar M S , Shaikh M A , Shams B , Shao L , Sharma A , Sharma P , Shawhan P , Shcheblanov N S , Sheela A , Shikano Y , Shikauchi M , Shimizu H , Shimode K , Shinkai H , Shishido T , Shoda A , Shoemaker D H , Shoemaker D M , ShyamSundar S , Sieniawska M , Sigg D , Silenzi L , Singer L P , Singh D , Singh M K , Singh N , Singha A , Sintes A M , Sipala V , Skliris V , Slagmolen B J J , Slaven-Blair T J , Smetana J , Smith J R , Smith L , Smith R J E , Soldateschi J , Somala S N , Somiya K , Song I , Soni K , Soni S , Sordini V , Sorrentino F , Sorrentino N , Soulard R , Souradeep T , Sowell E , Spagnuolo V , Spencer A P , Spera M , Spinicelli P , Srivastava A K , Srivastava V , Staats K , Stachie C , Stachurski F , Steer D A , Steinlechner J , Steinlechner S , Stergioulas N , Stops D J , Stover M , Strain K A , Strang L C , Stratta G , Strong M D , Strunk A , Sturani R , Stuver A L , Suchenek M , Sudhagar S , Sudhir V , Sugimoto R , Suh H G , Sullivan A G , Summerscales T Z , Sun L , Sunil S , Sur A , Suresh J , Sutton P J , Suzuki Takamasa , Suzuki Takanori , Suzuki Toshikazu , Swinkels B L , Szczepańczyk M J , Szewczyk P , Tacca M , Tagoshi H , Tait S C , Takahashi H , Takahashi R , Takano S , Takeda H , Takeda M , Talbot C J , Talbot C , Tanaka K , Tanaka Taiki , Tanaka Takahiro , Tanasijczuk A J , Tanioka S , Tanner D B , Tao D , Tao L , Tapia R D , San Martín E N Tapia , Taranto C , Taruya A , Tasson J D , Tenorio R , Terhune J E S , Terkowski L , Thirugnanasambandam M P , Thomas M , Thomas P , Thompson E E , Thompson J E , Thondapu S R , Thorne K A , Thrane E , Tiwari Shubhanshu , Tiwari Srishti , Tiwari V , Toivonen A M , Tolley A E , Tomaru T , Tomura T , Tonelli M , Tornasi Z , Torres-Forné A , Torrie C I , Melo I Tosta e , Töyrä D , Trapananti A , Travasso F , Traylor G , Trevor M , Tringali M C , Tripathee A , Troiano L , Trovato A , Trozzo L , Trudeau R J , Tsai D , Tsang K W , Tsang T , Tsao J-S , Tse M , Tso R , Tsuchida S , Tsukada L , Tsuna D , Tsutsui T , Turbang K , Turconi M , Tuyenbayev D , Ubhi A S , Uchikata N , Uchiyama T , Udall R P , Ueda A , Uehara T , Ueno K , Ueshima G , Unnikrishnan C S , Urban A L , Ushiba T , Utina A , Vajente G , Vajpeyi A , Valdes G , Valentini M , Valsan V , van Bakel N , van Beuzekom M , van Dael M , van den Brand J F J , Van Den Broeck C , Vander-Hyde D C , van Haevermaet H , van Heijningen J V , van Putten M H P M , van Remortel N , Vardaro M , Vargas A F , Varma V , Vasúth M , Vecchio A , Vedovato G , Veitch J , Veitch P J , Venneberg J , Venugopalan G , Verkindt D , Verma P , Verma Y , Vermeulen S M , Veske D , Vetrano F , Viceré A , Vidyant S , Viets A D , Vijaykumar A , Villa-Ortega V , Vinet J-Y , Virtuoso A , Vitale S , Vocca H , von Reis E R G , von Wrangel J S A , Vorvick C , Vyatchanin S P , Wade L E , Wade M , Wagner K J , Walet R C , Walker M , Wallace G S , Wallace L , Wang J , Wang J Z , Wang W H , Ward R L , Warner J , Was M , Washimi T , Washington N Y , Watchi J , Weaver B , Weaving C R , Webster S A , Weinert M , Weinstein A J , Weiss R , Weller C M , Weller R A , Wellmann F , Wen L , Weßels P , Wette K , Whelan J T , White D D , Whiting B F , Whittle C , Wilken D , Williams D , Williams M J , Williamson A R , Willis J L , Willke B , Wilson D J , Wipf C C , Wlodarczyk T , Woan G , Woehler J , Wofford J K , Wong D , Wong I C F , Wright M , Wu C , Wu D S , Wu H , Wysocki D M , Xiao L , Yamada T , Yamamoto H , Yamamoto K , Yamamoto T , Yamashita K , Yamazaki R , Yang F W , Yang K Z , Yang L , Yang Y-C , Yang Y , Yang Yang , Yap M J , Yeeles D W , Yeh S-W , Yelikar A B , Ying M , Yokoyama J , Yokozawa T , Yoo J , Yoshioka T , Yu Hang , Yu Haocun , Yuzurihara H , Zadrożny A , Zanolin M , Zeidler S , Zelenova T , Zendri J-P , Zevin M , Zhan M , Zhang H , Zhang J , Zhang L , Zhang R , Zhang T , Zhang Y , Zhao C , Zhao G , Zhao Y , Zhao Yue , Zhou R , Zhou Z , Zhu X J , Zhu Z-H , Zimmerman A B , Zucker M E , Zweizig J 
Published: April 2022

We report the results of the first joint observation of the KAGRA detector with GEO 600. KAGRA is a cryogenic and underground gravitational-wave detector consisting of a laser interferometer with 3 km arms, located in Kamioka, Gifu, Japan. GEO 600 is a British–German laser interferometer with 600 m arms, located near Hannover, Germany. GEO 600 and KAGRA performed a joint observing run from April 7 to 20, 2020. We present the results of the joint analysis of the GEO–KAGRA data for transient gravitational-wave signals, including the coalescence of neutron-star binaries and generic unmodeled transients. We also perform dedicated searches for binary coalescence signals and generic transients associated with gamma-ray burst events observed during the joint run. No gravitational-wave events were identified. We evaluate the minimum detectable amplitude for various types of transient signals and the spacetime volume for which the network is sensitive to binary neutron-star coalescences. We also place lower limits on the distances to the gamma-ray bursts analyzed based on the non-detection of an associated gravitational-wave signal for several signal models, including binary coalescences. These analyses demonstrate the feasibility and utility of KAGRA as a member of the global gravitational-wave detector network.