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.

First joint observation by the underground gravitational-wave detector KAGRA with GEO 600

Aiello L.;Barton M. A.;Bazzan M.;Bini S.;Boldrini M.;Bonavena L. D.;Bose S.;Bouffanais Y.;Bozzi A.;Branchesi M.;Brinkmann M.;Bucci F.;Cagnoli G.;Calloni E.;Canevarolo S.;Cao H.;Diaz J. C.;Chen D.;Cheung H. Y.;Chiarini G.;Ciani G.;Ciobanu A. A.;Ciolfi R.;Cipriano F.;Colpi M.;D'Angelo B.;D'Antonio S.;Davis D.;Diaz M. C.;Di Giorgio C.;Di Giovanni M.;Di Lieto A.;D'Onofrio L.;Durante O.;Fabrizi F.;Ferreira T. A.;Frasca S.;Gennai A.;George J.;Ghosh A.;Ghosh A.;Green R.;Guerra D.;Hanna C.;Hsu Y.;Jiang J.;Jung P.;Kang G.;Kao Y.;Korobko M.;Kumar P.;Kumar R.;Kumar R.;La Rosa I.;Li K. L.;Li P.;Liu K.;Liu X.;Lo T.;Lopez D.;Lorenzini M.;Majorana E.;Malik A.;Mangano V.;Mapelli M.;Martin R. M.;Martinez M.;Milano L.;Modafferi L. M.;Moreno C.;Mozzon S.;Munch J.;Nguyen C.;Nishizawa A.;Nocera F.;Pagano G.;Pagano R.;Pal S.;Pascucci D.;Pathak M.;Paul S.;Perego A.;Perez C. J.;Perigois C.;Pham H.;Prodi G. A.;Punturo M.;Ramirez T. D.;Rapagnani P.;Renzini A.;Rinaldi S.;Robinet F.;Rocchi A.;Rodriguez S.;Romero A.;Saleem M.;Salemi F.;Sharma A.;Steer D. A.;Sturani R.;Tacca M.;Urban A. L.;Vajpeyi A.;Vardaro M.;Vecchio A.;Vetrano F.;Warner J.;Wright M.;Yamada T.;Zhang H.;Zhang R.;Zhang T.;
2022

Abstract

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3460458
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