{"id":"https://openalex.org/A5153663622","orcid":null,"observed_orcids":[],"display_name":"Yoon-Hyun Ryu","raw_author_names":["Ryu, Yoon-Hyun","Yoon-Hyun Ryu"],"full_name":"Yoon-Hyun Ryu","works_count":2,"cited_by_count":0,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":0,"i10_index":0},"ids":{"openalex":"https://openalex.org/A5153663622","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I2800676788","ror":"https://ror.org/04g2pxh42","display_name":"Korea Astronomy and Space Science Institute","country_code":"KR","type":"facility","lineage":["https://openalex.org/I2800676788","https://openalex.org/I2801339556","https://openalex.org/I4387152098","https://openalex.org/I4405260336"]},"years":[2026]}],"last_known_institutions":[{"id":"https://openalex.org/I2800676788","ror":"https://ror.org/04g2pxh42","display_name":"Korea Astronomy and Space Science Institute","country_code":"KR","type":"facility","lineage":["https://openalex.org/I2800676788","https://openalex.org/I2801339556","https://openalex.org/I4387152098","https://openalex.org/I4405260336"]}],"topics":[{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","count":2,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10744","display_name":"Astrophysical Phenomena and Observations","count":2,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10026","display_name":"Galaxies: Formation, Evolution, Phenomena","count":1,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12917","display_name":"Astronomy and Astrophysical Research","count":1,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T10744","display_name":"Astrophysical Phenomena and Observations","value":4.4e-06,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","value":1.8e-06,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12917","display_name":"Astronomy and Astrophysical Research","value":1.8e-06,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10026","display_name":"Galaxies: Formation, Evolution, Phenomena","value":1.6e-06,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"125125069","wikidata":"https://www.wikidata.org/wiki/Q1028022","display_name":"Gravitational microlensing","score":0.9501000046730042},{"id":"44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","score":0.5069000124931335},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.5038999915122986},{"id":"2777069829","wikidata":"https://www.wikidata.org/wiki/Q5349805","display_name":"Einstein radius","score":0.42500001192092896},{"id":"100905312","wikidata":"https://www.wikidata.org/wiki/Q206717","display_name":"Planetary system","score":0.2865999937057495}],"counts_by_year":[{"year":2026,"works_count":2,"oa_works_count":2,"cited_by_count":0}],"display_name_alternatives":["Ryu, Yoon-Hyun","Yoon-Hyun Ryu"],"block_key":"y ryu","works_api_url":"https://api.openalex.org/works?filter=author.id:A5153663622","updated_date":"2026-11-05T13:29:08","created_date":"2026-10-01T00:00:00"}