{"associated_institutions":[{"country_code":"JP","display_name":"National Institutes of Natural Sciences","id":"https://openalex.org/I199525922","relationship":"parent","ror":"https://ror.org/055n47h92","type":"facility"},{"country_code":null,"display_name":"Institute for Cosmic Ray Research","id":"https://openalex.org/I4387155299","relationship":"child","ror":"https://ror.org/008td3p62","type":"facility"}],"authors_api_url":"https://scholar.citedevidence.com/v1/oa/institutions/I4210159940/authors","cited_by_count":2027050,"collaborators_api_url":"https://scholar.citedevidence.com/v1/oa/institutions/I4210159940/collaborators","country_code":"JP","counts_by_year":[{"cited_by_count":56,"oa_works_count":129,"works_count":142,"year":2026},{"cited_by_count":1793,"oa_works_count":505,"works_count":605,"year":2025},{"cited_by_count":7972,"oa_works_count":638,"works_count":802,"year":2024},{"cited_by_count":17347,"oa_works_count":814,"works_count":913,"year":2023},{"cited_by_count":20814,"oa_works_count":726,"works_count":854,"year":2022},{"cited_by_count":20056,"oa_works_count":697,"works_count":751,"year":2021},{"cited_by_count":21474,"oa_works_count":642,"works_count":781,"year":2020},{"cited_by_count":44677,"oa_works_count":597,"works_count":716,"year":2019},{"cited_by_count":23500,"oa_works_count":556,"works_count":739,"year":2018},{"cited_by_count":46968,"oa_works_count":627,"works_count":738,"year":2017},{"cited_by_count":44919,"oa_works_count":524,"works_count":709,"year":2016},{"cited_by_count":17608,"oa_works_count":427,"works_count":537,"year":2015},{"cited_by_count":23204,"oa_works_count":423,"works_count":608,"year":2014},{"cited_by_count":19419,"oa_works_count":370,"works_count":458,"year":2013},{"cited_by_count":18363,"oa_works_count":406,"works_count":572,"year":2012},{"cited_by_count":17928,"oa_works_count":359,"works_count":461,"year":2011},{"cited_by_count":19772,"oa_works_count":364,"works_count":520,"year":2010}],"counts_by_year_api_url":"https://scholar.citedevidence.com/v1/oa/institutions/I4210159940/counts_by_year","created_date":"2022-02-02T04:48:36.000Z","display_name":"National Astronomical Observatory of Japan","display_name_acronyms":["NAOJ"],"display_name_alternatives":["Kokuritsu Tenmondai","NINS National Astronomical Observatory of Japan","National Astronomical Observatory of Japan","National Institutes of Natural Sciences National Astronomical Observatory of Japan","こくりつてんもんだい","コクリツテンモンダイ","国立天文台"],"geo":{"city":"Mitaka-shi","country":"Japan","country_code":"JP","geonames_city_id":"1856942","latitude":35.683509826660156,"longitude":139.55963134765625,"region":null},"homepage_url":"https://www.nao.ac.jp","id":"https://openalex.org/I4210159940","ids":{"grid":"grid.458494.0","openalex":"https://openalex.org/I4210159940","ror":"https://ror.org/052rrw050","wikidata":null,"wikipedia":"https://en.wikipedia.org/wiki/National_Astronomical_Observatory_of_Japan"},"image_thumbnail_url":null,"image_url":null,"is_super_system":false,"lineage":["https://openalex.org/I1319490839","https://openalex.org/I199525922","https://openalex.org/I4210159940"],"repositories":[],"roles":[{"id":"https://openalex.org/F4320323772","role":"funder","works_count":7305},{"id":"https://openalex.org/I4210159940","role":"institution","works_count":17759}],"ror":"https://ror.org/052rrw050","status":"active","summary_stats":{"2yr_mean_citedness":8.014692091278524,"h_index":577,"i10_index":21933},"topic_share":[{"display_name":"Astrophysics and Star Formation Studies","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10477","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.027939},{"display_name":"Stellar, planetary, and galactic studies","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10039","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0222785},{"display_name":"Galaxies: Formation, Evolution, Phenomena","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10026","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0219835},{"display_name":"Gamma-ray bursts and supernovae","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T11323","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0194071},{"display_name":"Astronomy and Astrophysical Research","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T12917","subfield":{"display_name":"Instrumentation","id":"https://openalex.org/subfields/3105"},"value":0.0182823},{"display_name":"Adaptive optics and wavefront sensing","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T11484","subfield":{"display_name":"Atomic and Molecular Physics, and Optics","id":"https://openalex.org/subfields/3107"},"value":0.0157717},{"display_name":"Astrophysical Phenomena and Observations","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10744","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.015334},{"display_name":"Radio Astronomy Observations and Technology","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T12450","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0143838},{"display_name":"Pulsars and Gravitational Waves Research","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10463","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0111012},{"display_name":"Astro and Planetary Science","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10325","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0093},{"display_name":"Superconducting and THz Device Technology","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T11803","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0091371},{"display_name":"Astronomical Observations and Instrumentation","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Engineering","id":"https://openalex.org/fields/22"},"id":"https://openalex.org/T14163","subfield":{"display_name":"Computational Mechanics","id":"https://openalex.org/subfields/2206"},"value":0.0079741},{"display_name":"Astrophysics and Cosmic Phenomena","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10818","subfield":{"display_name":"Nuclear and High Energy Physics","id":"https://openalex.org/subfields/3106"},"value":0.0072841},{"display_name":"Molecular Spectroscopy and Structure","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Chemistry","id":"https://openalex.org/fields/16"},"id":"https://openalex.org/T12967","subfield":{"display_name":"Spectroscopy","id":"https://openalex.org/subfields/1607"},"value":0.0058414},{"display_name":"Planetary Science and Exploration","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10406","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0036833},{"display_name":"Solar and Space Plasma Dynamics","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10251","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0033143},{"display_name":"Neutrino Physics Research","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10921","subfield":{"display_name":"Nuclear and High Energy Physics","id":"https://openalex.org/subfields/3106"},"value":0.0031852},{"display_name":"Advanced optical system design","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Engineering","id":"https://openalex.org/fields/22"},"id":"https://openalex.org/T11517","subfield":{"display_name":"Biomedical Engineering","id":"https://openalex.org/subfields/2204"},"value":0.0029573},{"display_name":"History and Developments in Astronomy","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T12836","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0028384},{"display_name":"Calibration and Measurement Techniques","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Engineering","id":"https://openalex.org/fields/22"},"id":"https://openalex.org/T12019","subfield":{"display_name":"Aerospace Engineering","id":"https://openalex.org/subfields/2202"},"value":0.0026419},{"display_name":"Astronomical and nuclear sciences","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T13458","subfield":{"display_name":"Nuclear and High Energy Physics","id":"https://openalex.org/subfields/3106"},"value":0.0025875},{"display_name":"Cosmology and Gravitation Theories","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10095","subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"},"value":0.0025748},{"display_name":"Scientific Research and Discoveries","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T13126","subfield":{"display_name":"Statistical and Nonlinear Physics","id":"https://openalex.org/subfields/3109"},"value":0.0024173},{"display_name":"Atmospheric Ozone and Climate","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Earth and Planetary Sciences","id":"https://openalex.org/fields/19"},"id":"https://openalex.org/T11320","subfield":{"display_name":"Atmospheric Science","id":"https://openalex.org/subfields/1902"},"value":0.0023745},{"display_name":"Geomagnetism and Paleomagnetism Studies","domain":{"display_name":"Life Sciences","id":"https://openalex.org/domains/1"},"field":{"display_name":"Biochemistry, Genetics and Molecular Biology","id":"https://openalex.org/fields/13"},"id":"https://openalex.org/T11786","subfield":{"display_name":"Molecular Biology","id":"https://openalex.org/subfields/1312"},"value":0.0023514}],"topics":[{"count":6051,"display_name":"Stellar, planetary, and galactic studies","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10039","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":5194,"display_name":"Astrophysics and Star Formation Studies","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10477","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":4262,"display_name":"Astronomy and Astrophysical Research","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T12917","score":0.9999,"subfield":{"display_name":"Instrumentation","id":"https://openalex.org/subfields/3105"}},{"count":3776,"display_name":"Galaxies: Formation, Evolution, Phenomena","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10026","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":2878,"display_name":"Astro and Planetary Science","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10325","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":2466,"display_name":"Gamma-ray bursts and supernovae","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T11323","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":1966,"display_name":"Astrophysical Phenomena and Observations","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10744","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":1900,"display_name":"Solar and Space Plasma Dynamics","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10251","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":1789,"display_name":"Astrophysics and Cosmic Phenomena","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10818","score":1,"subfield":{"display_name":"Nuclear and High Energy Physics","id":"https://openalex.org/subfields/3106"}},{"count":1360,"display_name":"Pulsars and Gravitational Waves Research","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10463","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":1176,"display_name":"Adaptive optics and wavefront sensing","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T11484","score":1,"subfield":{"display_name":"Atomic and Molecular Physics, and Optics","id":"https://openalex.org/subfields/3107"}},{"count":909,"display_name":"Radio Astronomy Observations and Technology","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T12450","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":773,"display_name":"Ionosphere and magnetosphere dynamics","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10159","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":734,"display_name":"Geophysics and Gravity Measurements","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Earth and Planetary Sciences","id":"https://openalex.org/fields/19"},"id":"https://openalex.org/T11405","score":1,"subfield":{"display_name":"Oceanography","id":"https://openalex.org/subfields/1910"}},{"count":667,"display_name":"Planetary Science and Exploration","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10406","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":665,"display_name":"Astronomical Observations and Instrumentation","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Engineering","id":"https://openalex.org/fields/22"},"id":"https://openalex.org/T14163","score":0.9997,"subfield":{"display_name":"Computational Mechanics","id":"https://openalex.org/subfields/2206"}},{"count":656,"display_name":"Cosmology and Gravitation Theories","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10095","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":589,"display_name":"Molecular Spectroscopy and Structure","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Chemistry","id":"https://openalex.org/fields/16"},"id":"https://openalex.org/T12967","score":1,"subfield":{"display_name":"Spectroscopy","id":"https://openalex.org/subfields/1607"}},{"count":583,"display_name":"Superconducting and THz Device Technology","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T11803","score":1,"subfield":{"display_name":"Astronomy and Astrophysics","id":"https://openalex.org/subfields/3103"}},{"count":561,"display_name":"Atmospheric Ozone and Climate","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Earth and Planetary Sciences","id":"https://openalex.org/fields/19"},"id":"https://openalex.org/T11320","score":1,"subfield":{"display_name":"Atmospheric Science","id":"https://openalex.org/subfields/1902"}},{"count":431,"display_name":"Geomagnetism and Paleomagnetism Studies","domain":{"display_name":"Life Sciences","id":"https://openalex.org/domains/1"},"field":{"display_name":"Biochemistry, Genetics and Molecular Biology","id":"https://openalex.org/fields/13"},"id":"https://openalex.org/T11786","score":0.9998,"subfield":{"display_name":"Molecular Biology","id":"https://openalex.org/subfields/1312"}},{"count":374,"display_name":"Scientific Research and Discoveries","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T13126","score":1,"subfield":{"display_name":"Statistical and Nonlinear Physics","id":"https://openalex.org/subfields/3109"}},{"count":370,"display_name":"Neutrino Physics Research","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10921","score":1,"subfield":{"display_name":"Nuclear and High Energy Physics","id":"https://openalex.org/subfields/3106"}},{"count":329,"display_name":"Nuclear physics research studies","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Physics and Astronomy","id":"https://openalex.org/fields/31"},"id":"https://openalex.org/T10093","score":1,"subfield":{"display_name":"Nuclear and High Energy Physics","id":"https://openalex.org/subfields/3106"}},{"count":292,"display_name":"Spectroscopy and Laser Applications","domain":{"display_name":"Physical Sciences","id":"https://openalex.org/domains/3"},"field":{"display_name":"Chemistry","id":"https://openalex.org/fields/16"},"id":"https://openalex.org/T11111","score":1,"subfield":{"display_name":"Spectroscopy","id":"https://openalex.org/subfields/1607"}}],"type":"facility","type_id":"https://openalex.org/institution-types/facility","updated_date":"2026-03-30T05:59:38.000Z","works_api_url":"https://scholar.citedevidence.com/v1/oa/institutions/I4210159940/works","works_count":17759}