{"id":"https://openalex.org/W2092440163","doi":"https://doi.org/10.1143/ptp.65.1891","title":"Structure of Superposed Two Kerr Metrics","display_name":"Structure of Superposed Two Kerr Metrics","publication_year":1981,"publication_date":"1981-06-01","ids":{"openalex":"https://openalex.org/W2092440163","doi":"https://doi.org/10.1143/ptp.65.1891","mag":"2092440163"},"language":"en","primary_location":{"id":"doi:10.1143/ptp.65.1891","doi":"https://doi.org/10.1143/ptp.65.1891","is_oa":true,"landing_page_url":"https://doi.org/10.1143/ptp.65.1891","pdf_url":"https://academic.oup.com/ptp/article-pdf/65/6/1891/5385135/65-6-1891.pdf","source":{"id":"https://openalex.org/S83252788","display_name":"Progress of Theoretical Physics","issn_l":"0033-068X","issn":["0033-068X","1347-4081"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","norway-1"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Progress of Theoretical Physics","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://academic.oup.com/ptp/article-pdf/65/6/1891/5385135/65-6-1891.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5111555239","display_name":"K. Oohara","orcid":"https://orcid.org/0000-0002-7518-6677","observed_orcids":["https://orcid.org/0000-0002-7518-6677"]},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"K.-i. Oohara","raw_affiliation_strings":["Department of Physics, Kyoto University, Kyoto 606"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, Kyoto University, Kyoto 606","institution_ids":["https://openalex.org/I22299242"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5106305532","display_name":"Hayato Sato","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"H. Sato","raw_affiliation_strings":["Research Institute for Fundamental Physics, Kyoto University, Kyoto 606"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Research Institute for Fundamental Physics, Kyoto University, Kyoto 606","institution_ids":["https://openalex.org/I22299242"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I22299242"],"apc_list":null,"apc_paid":null,"fwci":5.5283,"has_fulltext":true,"cited_by_count":26,"citation_normalized_percentile":{"value":0.95194007,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":95},"biblio":{"volume":"65","issue":"6","first_page":"1891","last_page":"1900"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11960","display_name":"Relativity and Gravitational Theory","score":0.6869999766349792,"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"}},"topics":[{"id":"https://openalex.org/T11960","display_name":"Relativity and Gravitational Theory","score":0.6869999766349792,"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/T10025","display_name":"Black Holes and Theoretical Physics","score":0.2320999950170517,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"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","score":0.03180000185966492,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/rotating-black-holes","display_name":"rotating black holes","score":0.5960000157356262},{"id":"https://openalex.org/keywords/black-hole-mergers","display_name":"black hole mergers","score":0.4560000002384186},{"id":"https://openalex.org/keywords/spacetime-structure","display_name":"spacetime structure","score":0.527999997138977}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.9197378158569336},{"id":"https://openalex.org/C33024259","wikidata":"https://www.wikidata.org/wiki/Q76250","display_name":"Redshift","level":3,"score":0.7195233702659607},{"id":"https://openalex.org/C176672485","wikidata":"https://www.wikidata.org/wiki/Q883038","display_name":"Kerr effect","level":3,"score":0.5124431252479553},{"id":"https://openalex.org/C95086748","wikidata":"https://www.wikidata.org/wiki/Q1068747","display_name":"Kerr metric","level":4,"score":0.472881019115448},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.40761154890060425},{"id":"https://openalex.org/C158622935","wikidata":"https://www.wikidata.org/wiki/Q660848","display_name":"Nonlinear system","level":2,"score":0.23482945561408997},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.23440149426460266},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.07168644666671753},{"id":"https://openalex.org/C115304011","wikidata":"https://www.wikidata.org/wiki/Q72755","display_name":"Schwarzschild radius","level":3,"score":0.047540485858917236},{"id":"https://openalex.org/C2776401274","wikidata":"https://www.wikidata.org/wiki/Q3756855","display_name":"Accretion (finance)","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1143/ptp.65.1891","doi":"https://doi.org/10.1143/ptp.65.1891","is_oa":true,"landing_page_url":"https://doi.org/10.1143/ptp.65.1891","pdf_url":"https://academic.oup.com/ptp/article-pdf/65/6/1891/5385135/65-6-1891.pdf","source":{"id":"https://openalex.org/S83252788","display_name":"Progress of Theoretical Physics","issn_l":"0033-068X","issn":["0033-068X","1347-4081"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","norway-1"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Progress of Theoretical Physics","raw_type":"journal-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.1014.6841","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1014.6841","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://ptp.oxfordjournals.org/content/65/6/1891.full.pdf","raw_type":"text"}],"best_oa_location":{"id":"doi:10.1143/ptp.65.1891","doi":"https://doi.org/10.1143/ptp.65.1891","is_oa":true,"landing_page_url":"https://doi.org/10.1143/ptp.65.1891","pdf_url":"https://academic.oup.com/ptp/article-pdf/65/6/1891/5385135/65-6-1891.pdf","source":{"id":"https://openalex.org/S83252788","display_name":"Progress of Theoretical Physics","issn_l":"0033-068X","issn":["0033-068X","1347-4081"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","norway-1"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Progress of Theoretical Physics","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2092440163.pdf","grobid_xml":"https://content.openalex.org/works/W2092440163.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W605400731","https://openalex.org/W2787063867","https://openalex.org/W1637930900","https://openalex.org/W1974741840","https://openalex.org/W1973257439","https://openalex.org/W2952516044","https://openalex.org/W2059155554","https://openalex.org/W3113132379","https://openalex.org/W3034727237","https://openalex.org/W3041258131"],"abstract_inverted_index":{"Properties":[0],"of":[1,17],"the":[2,15,18,26,29],"superposed":[3],"two":[4,30],"Kerr":[5,31],"metrics":[6],"derived":[7],"by":[8,24],"Kramer":[9],"and":[10],"Neugebauer":[11],"are":[12],"examined.":[13],"Particularly,":[14],"structure":[16],"infinite":[19],"redshift":[20],"surfaces":[21],"is":[22],"given":[23],"changing":[25],"distance":[27],"between":[28],"metrics.":[32]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}
