{"id":"https://openalex.org/W2016794791","doi":"https://doi.org/10.1093/mnras/249.2.218","title":"A 100-200 Mpc group of quasars","display_name":"A 100-200 Mpc group of quasars","publication_year":1991,"publication_date":"1991-03-15","ids":{"openalex":"https://openalex.org/W2016794791","doi":"https://doi.org/10.1093/mnras/249.2.218","mag":"2016794791"},"language":"en","primary_location":{"id":"doi:10.1093/mnras/249.2.218","doi":"https://doi.org/10.1093/mnras/249.2.218","is_oa":true,"landing_page_url":"https://doi.org/10.1093/mnras/249.2.218","pdf_url":"https://academic.oup.com/mnras/article-pdf/249/2/218/3426702/mnras249-0218.pdf","source":{"id":"https://openalex.org/S195663288","display_name":"Monthly Notices of the Royal Astronomical Society","issn_l":"0035-8711","issn":["0035-8711","1365-2966","1365-8711"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-2","ki-jl-1","norway-1","oarl","poland-140","russia-white-list-1","vabb-shw"],"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":"Monthly Notices of the Royal Astronomical Society","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://academic.oup.com/mnras/article-pdf/249/2/218/3426702/mnras249-0218.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5014327765","display_name":"R. G. Clowes","orcid":"https://orcid.org/0000-0001-8370-465X","observed_orcids":["https://orcid.org/0000-0001-8370-465X"]},"institutions":[{"id":"https://openalex.org/I4210105583","display_name":"Royal Observatory","ror":"https://ror.org/016kj2436","country_code":"GB","type":"facility","lineage":["https://openalex.org/I4210105583"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"R. G. Clowes","raw_affiliation_strings":["Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ","institution_ids":["https://openalex.org/I4210105583"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5022523543","display_name":"L. E. Campusano","orcid":"https://orcid.org/0000-0002-0057-2397","observed_orcids":["https://orcid.org/0000-0002-0057-2397"]},"institutions":[{"id":"https://openalex.org/I69737025","display_name":"University of Chile","ror":"https://ror.org/047gc3g35","country_code":"CL","type":"education","lineage":["https://openalex.org/I69737025"]}],"countries":["CL"],"is_corresponding":false,"raw_author_name":"L. E. Campusano","raw_affiliation_strings":["Observatorio Astron\u00f3mico Cerro Cal\u00e1n, Departamento de Astronom\u00eda, Universidad de Chile,Casilla 36-D, Santiago, Chile"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Observatorio Astron\u00f3mico Cerro Cal\u00e1n, Departamento de Astronom\u00eda, Universidad de Chile,Casilla 36-D, Santiago, Chile","institution_ids":["https://openalex.org/I69737025"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2310,"currency":"GBP","value_usd":3046},"apc_paid":null,"fwci":5.259,"has_fulltext":false,"cited_by_count":48,"citation_normalized_percentile":{"value":0.94521008,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"249","issue":"2","first_page":"218","last_page":"226"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10026","display_name":"Galaxies: Formation, Evolution, Phenomena","score":0.9990000128746033,"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/T10026","display_name":"Galaxies: Formation, Evolution, Phenomena","score":0.9990000128746033,"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":0.00019999999494757503,"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/T10039","display_name":"Stellar, planetary, and galactic studies","score":9.999999747378752e-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"}}],"keywords":[{"id":"https://openalex.org/keywords/quasar-clustering","display_name":"quasar clustering","score":0.8629999756813049},{"id":"https://openalex.org/keywords/quasar-distribution","display_name":"quasar distribution","score":0.7229999899864197},{"id":"https://openalex.org/keywords/high-redshift-quasars","display_name":"high-redshift quasars","score":0.8939999938011169},{"id":"https://openalex.org/keywords/large-scale-structure","display_name":"large-scale structure","score":0.7300000190734863}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.9493510723114014},{"id":"https://openalex.org/C184992742","wikidata":"https://www.wikidata.org/wiki/Q7243229","display_name":"Prime (order theory)","level":2,"score":0.8078265190124512},{"id":"https://openalex.org/C135041427","wikidata":"https://www.wikidata.org/wiki/Q83373","display_name":"Quasar","level":3,"score":0.7497145533561707},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.6820666193962097},{"id":"https://openalex.org/C2781311116","wikidata":"https://www.wikidata.org/wiki/Q83306","display_name":"Group (periodic table)","level":2,"score":0.565542459487915},{"id":"https://openalex.org/C9652623","wikidata":"https://www.wikidata.org/wiki/Q190109","display_name":"Field (mathematics)","level":2,"score":0.5643336772918701},{"id":"https://openalex.org/C33676613","wikidata":"https://www.wikidata.org/wiki/Q13415176","display_name":"Dimension (graph theory)","level":2,"score":0.52386474609375},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.23257863521575928},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.10514533519744873},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.09424865245819092},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.07134196162223816},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1093/mnras/249.2.218","doi":"https://doi.org/10.1093/mnras/249.2.218","is_oa":true,"landing_page_url":"https://doi.org/10.1093/mnras/249.2.218","pdf_url":"https://academic.oup.com/mnras/article-pdf/249/2/218/3426702/mnras249-0218.pdf","source":{"id":"https://openalex.org/S195663288","display_name":"Monthly Notices of the Royal Astronomical Society","issn_l":"0035-8711","issn":["0035-8711","1365-2966","1365-8711"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-2","ki-jl-1","norway-1","oarl","poland-140","russia-white-list-1","vabb-shw"],"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":"Monthly Notices of the Royal Astronomical Society","raw_type":"journal-article"},{"id":"mag:3029156329","doi":null,"is_oa":false,"landing_page_url":"http://ui.adsabs.harvard.edu/abs/1991phco.conf..548C/abstract","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":{"id":"doi:10.1093/mnras/249.2.218","doi":"https://doi.org/10.1093/mnras/249.2.218","is_oa":true,"landing_page_url":"https://doi.org/10.1093/mnras/249.2.218","pdf_url":"https://academic.oup.com/mnras/article-pdf/249/2/218/3426702/mnras249-0218.pdf","source":{"id":"https://openalex.org/S195663288","display_name":"Monthly Notices of the Royal Astronomical Society","issn_l":"0035-8711","issn":["0035-8711","1365-2966","1365-8711"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-2","ki-jl-1","norway-1","oarl","poland-140","russia-white-list-1","vabb-shw"],"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":"Monthly Notices of the Royal Astronomical Society","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2016794791.pdf"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W3122861712","https://openalex.org/W7100309609","https://openalex.org/W1697125221","https://openalex.org/W1575690732","https://openalex.org/W2996703050","https://openalex.org/W1545024611","https://openalex.org/W1622759749","https://openalex.org/W2139228880","https://openalex.org/W2021871900","https://openalex.org/W1985075162"],"abstract_inverted_index":{"We":[0],"have":[1,49],"found":[2,88],"evidence":[3,105],"for":[4],"a":[5,63,151],"large,":[6],"elongated":[7],"group":[8,58,77],"of":[9,27,56,84,109,128,158],"at":[10,21,119,135],"least":[11],"ten":[12],"quasars":[13,85,110,129],"with":[14,154],"largest":[15],"dimension":[16],"|$\\sim":[17,73],"100-200":[18],"\\,{h}^{-1}$|":[19],"Mpc":[20],"z~":[22],"1.3,":[23],"in":[24,80],"the":[25,33,57,107,126,155],"direction":[26],"ESO/SERC":[28],"field":[29,34],"927,":[30],"which":[31],"has":[32],"centre":[35],"(1950)":[36],"|$[10^\\text{h}":[37],"40^\\text{m}":[38],"00^\\text{s},":[39],"05^\\circ":[40],"00^{\\prime}":[41],"00^{\\prime{}\\prime}.]$|":[42],"There":[43],"are":[44,101],"probably":[45],"further":[46],"members":[47],"that":[48,87,97,106],"not":[50,112],"yet":[51],"been":[52],"observed.":[53],"The":[54,76,95,143],"morphology":[55],"seems":[59,160],"to":[60,86],"be":[61,68,131,146],"like":[62],"clump,":[64],"but":[65,137,150],"there":[66],"might":[67],"some":[69],"sub-grouping":[70],"on":[71],"scales":[72,121],"20":[74],"\\,{h}^{-1}$|Mpc.":[75],"is":[78,104,111],"similar":[79],"size":[81],"and":[82,134],"number":[83],"by":[89],"Crampton,":[90],"Cowley":[91],"&":[92],"Hartwick":[93],"(1989).":[94],"fact":[96],"two":[98],"such":[99],"groups":[100,140,144],"now":[102],"known":[103],"distribution":[108],"so":[113],"simple":[114],"as":[115],"was":[116],"previously":[117],"thought:":[118],"large":[120,139,147,156],"|$(\\gtrsim":[122],"10":[123],"\\,{h}^{-1}":[124],"\\text{Mpc})$|":[125],"majority":[127],"may":[130,145],"distributed":[132],"uniformly":[133],"random,":[136],"rare,":[138],"also":[141],"occur.":[142],"physical":[148],"structures,":[149],"strong":[152],"association":[153],"structures":[157],"galaxies":[159],"doubtful.":[161]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":4},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":4},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}
