{"id":"https://openalex.org/A5045246773","orcid":null,"observed_orcids":[],"display_name":"K. Ruf","raw_author_names":["K. Ruf","Klaus Ruf"],"full_name":"Klaus Ruf","works_count":14,"cited_by_count":45,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":4,"i10_index":1},"ids":{"openalex":"https://openalex.org/A5045246773","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I114090438","ror":"https://ror.org/04cvxnb49","display_name":"Goethe University Frankfurt","country_code":"DE","type":"education","lineage":["https://openalex.org/I114090438"]},"years":[1977]},{"institution":{"id":"https://openalex.org/I4210158571","ror":"https://ror.org/04jvemc39","display_name":"Max Planck Institute for Radio Astronomy","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210158571"]},"years":[2003,2001,1998,1997,1983,1982]}],"last_known_institutions":[{"id":"https://openalex.org/I4210158571","ror":"https://ror.org/04jvemc39","display_name":"Max Planck Institute for Radio Astronomy","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210158571"]}],"topics":[{"id":"https://openalex.org/T10477","display_name":"Astrophysics and Star Formation Studies","count":7,"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/T12450","display_name":"Radio Astronomy Observations and Technology","count":7,"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","count":6,"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":5,"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":3,"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/T12450","display_name":"Radio Astronomy Observations and Technology","value":7.76e-05,"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/T14163","display_name":"Astronomical Observations and Instrumentation","value":1.76e-05,"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/T10477","display_name":"Astrophysics and Star Formation Studies","value":1.63e-05,"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/T11594","display_name":"Tree-ring climate responses","value":9.6e-06,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11803","display_name":"Superconducting and THz Device Technology","value":8.6e-06,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.93988037109375},{"id":"44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","score":0.7907091379165649},{"id":"1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","score":0.5413737893104553},{"id":"41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","score":0.48481956124305725},{"id":"33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","score":0.3342192769050598}],"counts_by_year":[{"year":1977,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1980,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1982,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1997,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1998,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2003,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":1}],"display_name_alternatives":["K. Ruf","Klaus Ruf"],"block_key":"k ruf","works_api_url":"https://api.openalex.org/works?filter=author.id:A5045246773","awards_count":0,"updated_date":"2026-11-04T11:47:51","created_date":"2016-06-24T00:00:00"}