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

, LIGO Scientific Collaboration, Virgo Collaboration & KAGRA Colla and Hewitt, Amy and Pitkin, Matthew (2022) First joint observation by the underground gravitational-wave detector, KAGRA, with GEO 600. Progress of Theoretical and Experimental Physics, 2022 (6). ISSN 2050-3911

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Abstract

We report the results of the first joint observation of the KAGRA detector with GEO600. KAGRA is a cryogenic and underground gravitational-wave detector consisting of a laser interferometer with three-kilometer arms, and located in Kamioka, Gifu, Japan. GEO600 is a British–German laser interferometer with 600m arms, and located near Hannover, Germany. GEO600 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 analysed 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.

Item Type:
Journal Article
Journal or Publication Title:
Progress of Theoretical and Experimental Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
172252
Deposited By:
Deposited On:
21 Jul 2022 16:00
Refereed?:
Yes
Published?:
Published
Last Modified:
06 Oct 2022 00:46