{"id":"https://openalex.org/W3017142011","doi":"https://doi.org/10.3847/1538-4357/ab8944","title":"Active-region Tilt Angles from White-light Images and Magnetograms: The Role of Magnetic Tongues","display_name":"Active-region Tilt Angles from White-light Images and Magnetograms: The Role of Magnetic Tongues","publication_year":2020,"publication_date":"2020-05-01","ids":{"openalex":"https://openalex.org/W3017142011","doi":"https://doi.org/10.3847/1538-4357/ab8944","mag":"3017142011"},"language":"en","primary_location":{"id":"doi:10.3847/1538-4357/ab8944","doi":"https://doi.org/10.3847/1538-4357/ab8944","is_oa":true,"landing_page_url":"https://doi.org/10.3847/1538-4357/ab8944","pdf_url":"https://iopscience.iop.org/article/10.3847/1538-4357/ab8944/pdf","source":{"id":"https://openalex.org/S1980519","display_name":"The Astrophysical Journal","issn_l":"0004-637X","issn":["0004-637X","1538-4357"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-1","ki-jl-1","norway-2","oarl","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320083","host_organization_name":"IOP Publishing","host_organization_lineage":["https://openalex.org/P4310320083","https://openalex.org/P4310311669"],"host_organization_lineage_names":["IOP Publishing","Institute of Physics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Astrophysical Journal","raw_type":"journal-article"},"parent_works":[],"lineage":["https://openalex.org/W3017142011"],"child_works_count":0,"type":"article","is_traditional":true,"indexed_in":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://iopscience.iop.org/article/10.3847/1538-4357/ab8944/pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5083664859","display_name":"Mariano Poisson","orcid":"https://orcid.org/0000-0002-4300-0954","observed_orcids":["https://orcid.org/0000-0002-4300-0954"]},"institutions":[{"id":"https://openalex.org/I151201029","display_name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas","ror":"https://ror.org/03cqe8w59","country_code":"AR","type":"government","lineage":["https://openalex.org/I151201029","https://openalex.org/I4210123736","https://openalex.org/I4387155568"]},{"id":"https://openalex.org/I4210144290","display_name":"Institute of Astronomy and Space Physics","ror":"https://ror.org/03rq94151","country_code":"AR","type":"facility","lineage":["https://openalex.org/I151201029","https://openalex.org/I24354313","https://openalex.org/I4210123736","https://openalex.org/I4210144290","https://openalex.org/I4387155568"]}],"countries":["AR"],"is_corresponding":false,"raw_author_name":"Mariano Poisson","raw_affiliation_strings":["Instituto de Astronom\u00eda y F\u00edsica del Espacio, IAFE, CONICET-UBA, CC. 67, Suc. 28, 1428 Buenos Aires, Argentina; mpoisson@iafe.uba.ar, lopezf@iafe.uba.ar, mandrini@iafe.uba.ar"],"raw_orcid":"https://orcid.org/0000-0002-4300-0954","affiliations":[{"raw_affiliation_string":"Instituto de Astronom\u00eda y F\u00edsica del Espacio, IAFE, CONICET-UBA, CC. 67, Suc. 28, 1428 Buenos Aires, Argentina; mpoisson@iafe.uba.ar, lopezf@iafe.uba.ar, mandrini@iafe.uba.ar","institution_ids":["https://openalex.org/I151201029","https://openalex.org/I4210144290"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070139152","display_name":"Pascal D\u00e9moulin","orcid":"https://orcid.org/0000-0001-8215-6532","observed_orcids":["https://orcid.org/0000-0001-8215-6532"]},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I2746051580","display_name":"Universit\u00e9 Paris Sciences et Lettres","ror":"https://ror.org/013cjyk83","country_code":"FR","type":"education","lineage":["https://openalex.org/I2746051580"]},{"id":"https://openalex.org/I2800004676","display_name":"Observatoire de Paris","ror":"https://ror.org/029nkcm90","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I2746051580","https://openalex.org/I2800004676"]},{"id":"https://openalex.org/I39804081","display_name":"Sorbonne Universit\u00e9","ror":"https://ror.org/02en5vm52","country_code":"FR","type":"education","lineage":["https://openalex.org/I39804081"]},{"id":"https://openalex.org/I4210091437","display_name":"Sorbonne Paris Cit\u00e9","ror":"https://ror.org/001z21q04","country_code":"FR","type":"other","lineage":["https://openalex.org/I204730241","https://openalex.org/I4210091437"]},{"id":"https://openalex.org/I4210120578","display_name":"Laboratoire d\u2019\u00e9tudes spatiales et d\u2019instrumentation en astrophysique","ror":"https://ror.org/02eptjh02","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I204730241","https://openalex.org/I2746051580","https://openalex.org/I2800004676","https://openalex.org/I39804081","https://openalex.org/I4210120578","https://openalex.org/I4210148025","https://openalex.org/I4405253946"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Pascal D\u00e9moulin","raw_affiliation_strings":["LESIA, Observatoire de Paris, Universit\u00e9 PSL, CNRS, Sorbonne Universit\u00e9, Univ. Paris Diderot, Sorbonne Paris Cit\u00e9, 5 place Jules Janssen, F-92195 Meudon, France; Pascal.Demoulin@obspm.fr","Laboratoire Cogitamus, 1 3/4 rue Descartes, 75005 Paris, France"],"raw_orcid":"https://orcid.org/0000-0001-8215-6532","affiliations":[{"raw_affiliation_string":"LESIA, Observatoire de Paris, Universit\u00e9 PSL, CNRS, Sorbonne Universit\u00e9, Univ. Paris Diderot, Sorbonne Paris Cit\u00e9, 5 place Jules Janssen, F-92195 Meudon, France; Pascal.Demoulin@obspm.fr","institution_ids":["https://openalex.org/I1294671590","https://openalex.org/I2746051580","https://openalex.org/I2800004676","https://openalex.org/I39804081","https://openalex.org/I4210091437","https://openalex.org/I4210120578"]},{"raw_affiliation_string":"Laboratoire Cogitamus, 1 3/4 rue Descartes, 75005 Paris, France","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019733886","display_name":"C. H. Mandrini","orcid":"https://orcid.org/0000-0001-9311-678X","observed_orcids":["https://orcid.org/0000-0001-9311-678X"]},"institutions":[{"id":"https://openalex.org/I151201029","display_name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas","ror":"https://ror.org/03cqe8w59","country_code":"AR","type":"government","lineage":["https://openalex.org/I151201029","https://openalex.org/I4210123736","https://openalex.org/I4387155568"]},{"id":"https://openalex.org/I24354313","display_name":"Universidad de Buenos Aires","ror":"https://ror.org/0081fs513","country_code":"AR","type":"education","lineage":["https://openalex.org/I24354313"]},{"id":"https://openalex.org/I4210144290","display_name":"Institute of Astronomy and Space Physics","ror":"https://ror.org/03rq94151","country_code":"AR","type":"facility","lineage":["https://openalex.org/I151201029","https://openalex.org/I24354313","https://openalex.org/I4210123736","https://openalex.org/I4210144290","https://openalex.org/I4387155568"]}],"countries":["AR"],"is_corresponding":false,"raw_author_name":"Cristina H. Mandrini","raw_affiliation_strings":["Instituto de Astronom\u00eda y F\u00edsica del Espacio, IAFE, CONICET-UBA, CC. 67, Suc. 28, 1428 Buenos Aires, Argentina; mpoisson@iafe.uba.ar, lopezf@iafe.uba.ar, mandrini@iafe.uba.ar","Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, 1428 Buenos Aires, Argentina"],"raw_orcid":"https://orcid.org/0000-0001-9311-678X","affiliations":[{"raw_affiliation_string":"Instituto de Astronom\u00eda y F\u00edsica del Espacio, IAFE, CONICET-UBA, CC. 67, Suc. 28, 1428 Buenos Aires, Argentina; mpoisson@iafe.uba.ar, lopezf@iafe.uba.ar, mandrini@iafe.uba.ar","institution_ids":["https://openalex.org/I151201029","https://openalex.org/I4210144290"]},{"raw_affiliation_string":"Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, 1428 Buenos Aires, Argentina","institution_ids":["https://openalex.org/I24354313"]}]},{"author_position":"last","author":{"id":null,"display_name":"Marcelo C. L\u00f3pez Fuentes","orcid":"https://orcid.org/0000-0001-8830-4022","observed_orcids":["https://orcid.org/0000-0001-8830-4022"]},"institutions":[{"id":"https://openalex.org/I151201029","display_name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas","ror":"https://ror.org/03cqe8w59","country_code":"AR","type":"government","lineage":["https://openalex.org/I151201029","https://openalex.org/I4210123736","https://openalex.org/I4387155568"]},{"id":"https://openalex.org/I4210144290","display_name":"Institute of Astronomy and Space Physics","ror":"https://ror.org/03rq94151","country_code":"AR","type":"facility","lineage":["https://openalex.org/I151201029","https://openalex.org/I24354313","https://openalex.org/I4210123736","https://openalex.org/I4210144290","https://openalex.org/I4387155568"]}],"countries":["AR"],"is_corresponding":false,"raw_author_name":"Marcelo C. L\u00f3pez Fuentes","raw_affiliation_strings":["Instituto de Astronom\u00eda y F\u00edsica del Espacio, IAFE, CONICET-UBA, CC. 67, Suc. 28, 1428 Buenos Aires, Argentina; mpoisson@iafe.uba.ar, lopezf@iafe.uba.ar, mandrini@iafe.uba.ar"],"raw_orcid":"https://orcid.org/0000-0001-8830-4022","affiliations":[{"raw_affiliation_string":"Instituto de Astronom\u00eda y F\u00edsica del Espacio, IAFE, CONICET-UBA, CC. 67, Suc. 28, 1428 Buenos Aires, Argentina; mpoisson@iafe.uba.ar, lopezf@iafe.uba.ar, mandrini@iafe.uba.ar","institution_ids":["https://openalex.org/I151201029","https://openalex.org/I4210144290"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":9,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":4499,"currency":"USD","value_usd":4499},"apc_paid":null,"fwci":0.3631,"has_fulltext":true,"cited_by_count":11,"citation_normalized_percentile":{"value":0.5630871,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"894","issue":"2","first_page":"131","last_page":"131"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10251","display_name":"Solar and Space Plasma Dynamics","score":0.9994999766349792,"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/T10251","display_name":"Solar and Space Plasma Dynamics","score":0.9994999766349792,"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","score":0.00019999999494757503,"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/T11484","display_name":"Adaptive optics and wavefront sensing","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"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/line-of-sight-magnetograms","display_name":"line-of-sight magnetograms","score":0.8669999837875366},{"id":"https://openalex.org/keywords/active-region-emergence","display_name":"active region emergence","score":0.7599999904632568},{"id":"https://openalex.org/keywords/k-means-clustering","display_name":"K-means clustering","score":0.6370000243186951}],"concepts":[{"id":"https://openalex.org/C2779844322","wikidata":"https://www.wikidata.org/wiki/Q2919140","display_name":"Tilt (camera)","level":2,"score":0.859000027179718},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.8183000087738037},{"id":"https://openalex.org/C115260700","wikidata":"https://www.wikidata.org/wiki/Q11408","display_name":"Magnetic field","level":2,"score":0.7142000198364258},{"id":"https://openalex.org/C157479481","wikidata":"https://www.wikidata.org/wiki/Q177831","display_name":"Magnetic flux","level":3,"score":0.6004999876022339},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.5741999745368958},{"id":"https://openalex.org/C2164484","wikidata":"https://www.wikidata.org/wiki/Q5170150","display_name":"Core (optical fiber)","level":2,"score":0.5070000290870667},{"id":"https://openalex.org/C139676723","wikidata":"https://www.wikidata.org/wiki/Q1193832","display_name":"Sign (mathematics)","level":2,"score":0.4374000132083893},{"id":"https://openalex.org/C68709404","wikidata":"https://www.wikidata.org/wiki/Q1134475","display_name":"Flux (metallurgy)","level":2,"score":0.40959998965263367},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.3917999863624573},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.36500000953674316},{"id":"https://openalex.org/C30475298","wikidata":"https://www.wikidata.org/wiki/Q909554","display_name":"Computational physics","level":1,"score":0.3188000023365021},{"id":"https://openalex.org/C126691448","wikidata":"https://www.wikidata.org/wiki/Q2028919","display_name":"Magnitude (astronomy)","level":2,"score":0.3050999939441681},{"id":"https://openalex.org/C72782756","wikidata":"https://www.wikidata.org/wiki/Q394352","display_name":"Inner core","level":2,"score":0.29269999265670776},{"id":"https://openalex.org/C194482375","wikidata":"https://www.wikidata.org/wiki/Q117987","display_name":"Magnetic anomaly","level":2,"score":0.2924000024795532},{"id":"https://openalex.org/C9652623","wikidata":"https://www.wikidata.org/wiki/Q190109","display_name":"Field (mathematics)","level":2,"score":0.2605000138282776},{"id":"https://openalex.org/C175601593","wikidata":"https://www.wikidata.org/wiki/Q6731614","display_name":"Magnetic structure","level":4,"score":0.2596000134944916},{"id":"https://openalex.org/C2780167933","wikidata":"https://www.wikidata.org/wiki/Q1550652","display_name":"Pulse (music)","level":3,"score":0.2581999897956848}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.3847/1538-4357/ab8944","doi":"https://doi.org/10.3847/1538-4357/ab8944","is_oa":true,"landing_page_url":"https://doi.org/10.3847/1538-4357/ab8944","pdf_url":"https://iopscience.iop.org/article/10.3847/1538-4357/ab8944/pdf","source":{"id":"https://openalex.org/S1980519","display_name":"The Astrophysical Journal","issn_l":"0004-637X","issn":["0004-637X","1538-4357"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-1","ki-jl-1","norway-2","oarl","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320083","host_organization_name":"IOP Publishing","host_organization_lineage":["https://openalex.org/P4310320083","https://openalex.org/P4310311669"],"host_organization_lineage_names":["IOP Publishing","Institute of Physics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Astrophysical Journal","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:2004.07345","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/2004.07345","pdf_url":"https://arxiv.org/pdf/2004.07345","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"pmh:oai:HAL:hal-02997987v1","doi":null,"is_oa":true,"landing_page_url":"https://hal.sorbonne-universite.fr/hal-02997987","pdf_url":null,"source":{"id":"https://openalex.org/S4306402512","display_name":"HAL","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4405252976","host_organization_name":"Centre pour la Communication Scientifique Directe","host_organization_lineage":["https://openalex.org/I4405252976"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"The Astrophysical Journal, 2020, 894 (2), pp.131. &#x27E8;10.3847/1538-4357/ab8944&#x27E9;","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:ri.conicet.gov.ar:11336/163596","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/11336/163596","pdf_url":null,"source":{"id":"https://openalex.org/S4306401400","display_name":"Conicet","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210104196","host_organization_name":"Centro Cient\u00edfico Tecnol\u00f3gico - Nordeste","host_organization_lineage":["https://openalex.org/I4210104196"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-sa","license_id":"https://openalex.org/licenses/cc-by-nc-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"},{"id":"doi:10.48550/arxiv.2004.07345","doi":"https://doi.org/10.48550/arxiv.2004.07345","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2004.07345","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article-journal"}],"best_oa_location":{"id":"doi:10.3847/1538-4357/ab8944","doi":"https://doi.org/10.3847/1538-4357/ab8944","is_oa":true,"landing_page_url":"https://doi.org/10.3847/1538-4357/ab8944","pdf_url":"https://iopscience.iop.org/article/10.3847/1538-4357/ab8944/pdf","source":{"id":"https://openalex.org/S1980519","display_name":"The Astrophysical Journal","issn_l":"0004-637X","issn":["0004-637X","1538-4357"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-1","ki-jl-1","norway-2","oarl","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320083","host_organization_name":"IOP Publishing","host_organization_lineage":["https://openalex.org/P4310320083","https://openalex.org/P4310311669"],"host_organization_lineage_names":["IOP Publishing","Institute of Physics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Astrophysical Journal","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G5586110661","display_name":null,"funder_award_id":"PICT2016","funder_id":"https://openalex.org/F4320334832","funder_display_name":"Agencia Nacional de Promoci\u00f3n Cient\u00edfica y Tecnol\u00f3gica"},{"id":"https://openalex.org/G757564869","display_name":null,"funder_award_id":"2016-0221","funder_id":"https://openalex.org/F4320334832","funder_display_name":"Agencia Nacional de Promoci\u00f3n Cient\u00edfica y Tecnol\u00f3gica"},{"id":"https://openalex.org/G7986208771","display_name":null,"funder_award_id":"20020170100611BA","funder_id":"https://openalex.org/F4320335478","funder_display_name":"Secretar\u00eda de Ciencia y T\u00e9cnica, Universidad de Buenos Aires"}],"funders":[{"id":"https://openalex.org/F4320306101","display_name":"National Aeronautics and Space Administration","ror":"https://ror.org/027ka1x80"},{"id":"https://openalex.org/F4320321519","display_name":"Centre National d\u2019Etudes Spatiales","ror":"https://ror.org/04h1h0y33"},{"id":"https://openalex.org/F4320321594","display_name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas","ror":"https://ror.org/03cqe8w59"},{"id":"https://openalex.org/F4320322892","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73"},{"id":"https://openalex.org/F4320334832","display_name":"Agencia Nacional de Promoci\u00f3n Cient\u00edfica y Tecnol\u00f3gica","ror":"https://ror.org/03stxzb56"},{"id":"https://openalex.org/F4320335478","display_name":"Secretar\u00eda de Ciencia y T\u00e9cnica, Universidad de Buenos Aires","ror":null}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3017142011.pdf","grobid_xml":"https://content.openalex.org/works/W3017142011.grobid-xml"},"referenced_works_count":66,"referenced_works":["https://openalex.org/W84691783","https://openalex.org/W1506174203","https://openalex.org/W1965228933","https://openalex.org/W1975186314","https://openalex.org/W1980871379","https://openalex.org/W1992584382","https://openalex.org/W1993129736","https://openalex.org/W1993567160","https://openalex.org/W1996374195","https://openalex.org/W1999545528","https://openalex.org/W2002649293","https://openalex.org/W2005248667","https://openalex.org/W2024507121","https://openalex.org/W2029077732","https://openalex.org/W2034415917","https://openalex.org/W2034543521","https://openalex.org/W2046706635","https://openalex.org/W2052988135","https://openalex.org/W2056566454","https://openalex.org/W2059381587","https://openalex.org/W2060503229","https://openalex.org/W2060610158","https://openalex.org/W2069793657","https://openalex.org/W2079651676","https://openalex.org/W2081830950","https://openalex.org/W2082725177","https://openalex.org/W2087274206","https://openalex.org/W2088890982","https://openalex.org/W2090248358","https://openalex.org/W2094483427","https://openalex.org/W2108008304","https://openalex.org/W2123002043","https://openalex.org/W2137342200","https://openalex.org/W2147682708","https://openalex.org/W2154159311","https://openalex.org/W2158612941","https://openalex.org/W2161001258","https://openalex.org/W2162707106","https://openalex.org/W2162956769","https://openalex.org/W2165240867","https://openalex.org/W2173614711","https://openalex.org/W2222658031","https://openalex.org/W2264487001","https://openalex.org/W2295972454","https://openalex.org/W2299467264","https://openalex.org/W2313071309","https://openalex.org/W2344143426","https://openalex.org/W2413664419","https://openalex.org/W2472736883","https://openalex.org/W2499623554","https://openalex.org/W2727328763","https://openalex.org/W2758077168","https://openalex.org/W2784167065","https://openalex.org/W2810917312","https://openalex.org/W2887078801","https://openalex.org/W2887830626","https://openalex.org/W2899032004","https://openalex.org/W2903093482","https://openalex.org/W2995984048","https://openalex.org/W2997275808","https://openalex.org/W3101977369","https://openalex.org/W3103002089","https://openalex.org/W3103379618","https://openalex.org/W3177773949","https://openalex.org/W4234703540","https://openalex.org/W4297834191"],"related_works":["https://openalex.org/W2997275808","https://openalex.org/W1987281515","https://openalex.org/W3195972071","https://openalex.org/W4389649457","https://openalex.org/W7163170487","https://openalex.org/W4405703571","https://openalex.org/W127972936","https://openalex.org/W3027602932","https://openalex.org/W4396558820","https://openalex.org/W2079651676"],"abstract_inverted_index":{"Abstract":[0],"The":[1,117],"presence":[2,130],"of":[3,38,80,99,114,123,131,222,233,240],"elongations":[4],"in":[5,58,121,151,156,175,215,246],"active-region":[6],"(AR)":[7],"polarities,":[8],"called":[9],"magnetic":[10,39,111,132,149,206,212,251],"tongues,":[11,183,196],"is":[12],"mostly":[13],"visible":[14],"during":[15],"their":[16,56],"emergence":[17,239],"phase.":[18],"AR":[19,158],"tilts":[20],"have":[21],"been":[22,47],"measured":[23],"thoroughly":[24],"using":[25],"long-term":[26,176],"white-light":[27],"(WL)":[28],"databases,":[29],"sometimes":[30],"combined":[31],"with":[32,65,171,181,194],"magnetic-field":[33,97],"information.":[34],"Since":[35],"the":[36,77,86,96,100,110,129,137,148,152,157,162,172,184,223,231,238,248],"influence":[37],"tongues":[40,153,207,234],"on":[41],"WL":[42,90,103,177,210],"tilt":[43,78,118,226],"measurements":[44],"has":[45],"not":[46],"taken":[48],"into":[49],"account":[50],"before,":[51],"we":[52,135],"aim":[53],"to":[54,62,75,89,102,146],"investigate":[55],"role":[57],"tilt-angle":[59,165,189],"values":[60,119],"and":[61,105,211],"compare":[63,161],"them":[64],"those":[66],"derived":[67],"from":[68,154],"LOS":[69],"magnetograms.":[70],"We":[71,160],"apply":[72,136],"four":[73,163],"methods":[74,186],"compute":[76],"angle":[79],"generally":[81],"bipolar":[82],"ARs:":[83],"one":[84,94,108],"applies":[85],"k-means":[87],"algorithm":[88],"data,":[91,104],"a":[92,106,219],"second":[93],"includes":[95],"sign":[98],"polarities":[101],"third":[107],"uses":[109],"flux-weighted":[112],"center":[113],"each":[115],"polarity.":[116],"computed":[120,164],"any":[122],"these":[124,170],"ways":[125],"are":[126,198],"affected":[127],"by":[128],"tongues.":[133],"Therefore,":[134],"newly":[138],"developed":[139],"Core":[140],"Field":[141],"Fit":[142],"Estimator":[143],"(CoFFE)":[144],"method":[145],"separate":[147],"flux":[150],"that":[155,205],"core.":[159],"values,":[166],"as":[167,169,235,237],"well":[168,236],"ones":[173],"reported":[174],"databases.":[178],"For":[179],"ARs":[180,193],"low-magnetic-flux":[182],"different":[185],"report":[187],"consistent":[188],"values.":[190],"But":[191],"for":[192],"high-flux":[195],"there":[197],"noticeable":[199],"discrepancies":[200],"between":[201,247],"all":[202],"methods,":[203],"indicating":[204],"differently":[208],"affect":[209],"data.":[213],"However,":[214],"general,":[216],"CoFFE":[217],"achieves":[218],"better":[220],"estimation":[221],"main":[224,249],"bipole":[225,250],"because":[227],"it":[228,244],"removes":[229],"both":[230],"effect":[232],"secondary":[241],"bipoles":[242],"when":[243],"occurs":[245],"polarities.":[252]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":4},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":1}],"updated_date":"2026-11-14T11:04:58.165337","created_date":"2020-04-24T00:00:00"}
