{"id":"https://openalex.org/W32925421","doi":null,"title":"The Orion radio zoo revisited: source variability","display_name":"The Orion radio zoo revisited: source variability","publication_year":1993,"publication_date":"1993-10-01","ids":{"openalex":"https://openalex.org/W32925421","mag":"32925421"},"language":"en","primary_location":{"id":"mag:32925421","doi":null,"is_oa":false,"landing_page_url":"https://ui.adsabs.harvard.edu/abs/1993A&AS..101..127F/abstract","pdf_url":null,"source":{"id":"https://openalex.org/S98563347","display_name":"Astronomy & Astrophysics Supplement Series","issn_l":"0365-0138","issn":["0365-0138","1286-4846"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["norway-1"],"host_organization":"https://openalex.org/P4310319748","host_organization_name":"EDP Sciences","host_organization_lineage":["https://openalex.org/P4310319748","https://openalex.org/P4310319982"],"host_organization_lineage_names":["EDP Sciences","Science Press"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Astronomy & Astrophysics Supplement Series","raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5017091508","display_name":"Marcello Felli","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"M. Felli","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5054254501","display_name":"Greg B Taylor","orcid":"https://orcid.org/0000-0001-6495-7731","observed_orcids":["https://orcid.org/0000-0001-6495-7731","https://orcid.org/0000-0001-5756-3259"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"G. B. Taylor","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0001-6495-7731","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060287115","display_name":"M. Catarzi","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"M. Catarzi","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048119858","display_name":"E. Churchwell","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"E. Churchwell","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5067530546","display_name":"S. Kurtz","orcid":"https://orcid.org/0000-0003-4444-5602","observed_orcids":["https://orcid.org/0000-0003-4444-5602"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S. Kurtz","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0003-4444-5602","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.00760387,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"101","issue":"1","first_page":"127","last_page":"151"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10477","display_name":"Astrophysics and Star Formation Studies","score":0.9429000020027161,"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/T10477","display_name":"Astrophysics and Star Formation Studies","score":0.9429000020027161,"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":0.03689999878406525,"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","score":0.006800000090152025,"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/orion-nebula","display_name":"Orion Nebula","score":0.8790000081062317},{"id":"https://openalex.org/keywords/radio-variability","display_name":"radio variability","score":0.7250000238418579},{"id":"https://openalex.org/keywords/trapezium-cluster","display_name":"Trapezium cluster","score":0.949999988079071},{"id":"https://openalex.org/keywords/t-tauri-stars","display_name":"T Tauri stars","score":0.9120000004768372},{"id":"https://openalex.org/keywords/compact-radio-sources","display_name":"compact radio sources","score":0.8339999914169312},{"id":"https://openalex.org/keywords/flux-density-variability","display_name":"flux density variability","score":0.6840000152587891},{"id":"https://openalex.org/keywords/spectral-index","display_name":"spectral index","score":0.921999990940094},{"id":"https://openalex.org/keywords/young-stellar-objects","display_name":"young stellar objects","score":0.5659999847412109}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.911205530166626},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.8238846659660339},{"id":"https://openalex.org/C42061751","wikidata":"https://www.wikidata.org/wiki/Q2280060","display_name":"Spectral index","level":3,"score":0.7854222059249878},{"id":"https://openalex.org/C2776026020","wikidata":"https://www.wikidata.org/wiki/Q13903","display_name":"Orion Nebula","level":3,"score":0.7626953125},{"id":"https://openalex.org/C68709404","wikidata":"https://www.wikidata.org/wiki/Q1134475","display_name":"Flux (metallurgy)","level":2,"score":0.5735013484954834},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.5315617918968201},{"id":"https://openalex.org/C164866538","wikidata":"https://www.wikidata.org/wiki/Q367351","display_name":"Cluster (spacecraft)","level":2,"score":0.5235671401023865},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.42338958382606506},{"id":"https://openalex.org/C4839761","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Spectral line","level":2,"score":0.3792939782142639},{"id":"https://openalex.org/C150846664","wikidata":"https://www.wikidata.org/wiki/Q7602306","display_name":"Stars","level":2,"score":0.10830077528953552},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.0},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:32925421","doi":null,"is_oa":false,"landing_page_url":"https://ui.adsabs.harvard.edu/abs/1993A&AS..101..127F/abstract","pdf_url":null,"source":{"id":"https://openalex.org/S98563347","display_name":"Astronomy & Astrophysics Supplement Series","issn_l":"0365-0138","issn":["0365-0138","1286-4846"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["norway-1"],"host_organization":"https://openalex.org/P4310319748","host_organization_name":"EDP Sciences","host_organization_lineage":["https://openalex.org/P4310319748","https://openalex.org/P4310319982"],"host_organization_lineage_names":["EDP Sciences","Science Press"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Astronomy & Astrophysics Supplement Series","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W4241327584","https://openalex.org/W1985217393","https://openalex.org/W2007317588","https://openalex.org/W2301564842","https://openalex.org/W2162714534","https://openalex.org/W2343742212","https://openalex.org/W2132929725","https://openalex.org/W2183949593","https://openalex.org/W2039558180","https://openalex.org/W2071477183","https://openalex.org/W2760060430","https://openalex.org/W2980143538","https://openalex.org/W2965516601","https://openalex.org/W2436430516","https://openalex.org/W2163175447","https://openalex.org/W2159997952","https://openalex.org/W2201836111","https://openalex.org/W2077796847","https://openalex.org/W1893431871"],"related_works":["https://openalex.org/W3105538611","https://openalex.org/W126080841","https://openalex.org/W3193258420","https://openalex.org/W3042741823","https://openalex.org/W2013097486","https://openalex.org/W1983993499","https://openalex.org/W129568076","https://openalex.org/W2043201392","https://openalex.org/W6996787538","https://openalex.org/W2058790411"],"abstract_inverted_index":{"The":[0,48,75],"core":[1],"of":[2,26,31,56,62,66,93,104,122,128],"the":[3,10,13,36,72,83,88,101,120,123,129],"Orion":[4],"nebula":[5],"has":[6],"been":[7],"monitored":[8],"with":[9,95],"VLA":[11],"in":[12,87],"A":[14,29,81],"and":[15,20,59,110,147],"B":[16],"configurations":[17],"at":[18,45],"5":[19],"15":[21],"GHz":[22],"over":[23],"a":[24,63],"period":[25],"7":[27],"months.":[28],"region":[30],"0.2":[32],"pc":[33],"centered":[34],"on":[35,119,140],"Trapezium":[37,73],"cluster":[38],"was":[39,50],"imaged":[40],"about":[41],"every":[42],"two":[43],"weeks":[44],"both":[46],"frequencies.":[47],"goal":[49],"to":[51,107,113],"study":[52],"possible":[53],"temporal":[54],"variations":[55],"flux":[57],"density":[58],"spectral":[60,143],"index":[61],"large":[64],"number":[65],"very":[67],"compact":[68],"radio":[69,131],"sources":[70,132],"near":[71],"cluster.":[74],"binary":[76],"system":[77],"\u03b8":[78],"1":[79],"Ori":[80],"is":[82],"most":[84],"variable":[85],"source":[86,103],"sample.":[89],"Although":[90],"some":[91],"modulation":[92],"emission":[94],"orbital":[96,114],"phase":[97],"might":[98],"be":[99,108],"present,":[100],"main":[102],"variability":[105],"appears":[106],"intrinsic":[109],"not":[111],"related":[112],"phase;":[115],"possibly":[116],"flaring":[117],"activity":[118],"surface":[121],"T":[124],"Tauri":[125],"companion.":[126],"All":[127],"other":[130],"are":[133],"classified":[134],"as":[135],"thermal":[136],"or":[137],"nonthermal":[138],"depending":[139],"their":[141],"variability,":[142],"index,":[144],"angular":[145],"size,":[146],"optical":[148],"identification":[149]},"counts_by_year":[],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2016-06-24T00:00:00"}