{"id":"https://openalex.org/W7225753693","doi":"https://doi.org/10.48550/arxiv.2611.12595","title":"The Edge of the Warm Corona in Active Galactic Nuclei","display_name":"The Edge of the Warm Corona in Active Galactic Nuclei","publication_year":2026,"publication_date":"2026-11-09","ids":{"openalex":"https://openalex.org/W7225753693","doi":"https://doi.org/10.48550/arxiv.2611.12595"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2611.12595","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2611.12595","pdf_url":"https://arxiv.org/pdf/2611.12595","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":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":["arxiv","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2611.12595","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5161371783","display_name":"Parikshit Partha Biswas","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Biswas, Parikshit Partha","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051722294","display_name":"A. R\u00f3\u017c\u00e1\u0144ska","orcid":"https://orcid.org/0000-0002-5275-4096","observed_orcids":["https://orcid.org/0000-0002-5275-4096"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"R\u00f3\u017ca\u0144ska, Agata","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084616192","display_name":"Debora Lan\u010dov\u00e1","orcid":"https://orcid.org/0000-0003-0826-9787","observed_orcids":["https://orcid.org/0000-0003-0826-9787"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Lan\u010dov\u00e1, Debora","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082387702","display_name":"Dominik Gronkiewicz","orcid":"https://orcid.org/0000-0001-5325-7705","observed_orcids":["https://orcid.org/0000-0001-5325-7705"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Gronkiewicz, Dominik","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5073954708","display_name":"R. Wojaczy\u0144ski","orcid":"https://orcid.org/0000-0003-4971-2538","observed_orcids":["https://orcid.org/0000-0003-4971-2538"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Wojaczy\u0144ski, Rafa\u0142","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5158818876","display_name":"Andrzej Zdziarski","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Zdziarski, Andrzej","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5090338092","display_name":"S. Bianchi","orcid":"https://orcid.org/0000-0002-4622-4240","observed_orcids":["https://orcid.org/0000-0002-4622-4240"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Bianchi, Stefano","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10744","display_name":"Astrophysical Phenomena and Observations","score":0.9980000257492065,"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/T10744","display_name":"Astrophysical Phenomena and Observations","score":0.9980000257492065,"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","score":0.0010000000474974513,"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/T10818","display_name":"Astrophysics and Cosmic Phenomena","score":9.999999747378752e-05,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/warm-corona","display_name":"warm corona","score":0.9169999957084656},{"id":"https://openalex.org/keywords/active-galactic-nuclei","display_name":"active galactic nuclei","score":0.8849999904632568},{"id":"https://openalex.org/keywords/soft-x-ray-excess","display_name":"soft X-ray excess","score":0.9890000224113464},{"id":"https://openalex.org/keywords/accretion-disks","display_name":"accretion disks","score":0.8209999799728394},{"id":"https://openalex.org/keywords/compton-cooling","display_name":"Compton cooling","score":0.9160000085830688},{"id":"https://openalex.org/keywords/iron-k-alpha-line","display_name":"iron K-alpha line","score":0.7120000123977661},{"id":"https://openalex.org/keywords/comptonization","display_name":"Comptonization","score":0.6499999761581421},{"id":"https://openalex.org/keywords/photoionization","display_name":"photoionization","score":0.6949999928474426},{"id":"https://openalex.org/keywords/mass-accretion-rate","display_name":"accretion rate","score":0.7829999923706055},{"id":"https://openalex.org/keywords/eddington-ratio","display_name":"Eddington ratio","score":0.7450000047683716},{"id":"https://openalex.org/keywords/changing-look-agn","display_name":"changing-look AGN","score":0.8009999990463257},{"id":"https://openalex.org/keywords/iron-abundance","display_name":"iron abundance","score":0.4729999899864197},{"id":"https://openalex.org/keywords/x-ray-reflection","display_name":"X-ray reflection","score":0.49300000071525574}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.8515999913215637},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.7822999954223633},{"id":"https://openalex.org/C43481613","wikidata":"https://www.wikidata.org/wiki/Q46587","display_name":"Active galactic nucleus","level":3,"score":0.7443000078201294},{"id":"https://openalex.org/C198291218","wikidata":"https://www.wikidata.org/wiki/Q190382","display_name":"Ionization","level":3,"score":0.5938000082969666},{"id":"https://openalex.org/C2776779350","wikidata":"https://www.wikidata.org/wiki/Q1134503","display_name":"Corona (planetary geology)","level":3,"score":0.5910000205039978},{"id":"https://openalex.org/C158749347","wikidata":"https://www.wikidata.org/wiki/Q10284378","display_name":"Photoionization","level":4,"score":0.5687999725341797},{"id":"https://openalex.org/C2776401274","wikidata":"https://www.wikidata.org/wiki/Q3756855","display_name":"Accretion (finance)","level":2,"score":0.5533000230789185},{"id":"https://openalex.org/C198352243","wikidata":"https://www.wikidata.org/wiki/Q37105","display_name":"Line (geometry)","level":2,"score":0.5254999995231628},{"id":"https://openalex.org/C96141758","wikidata":"https://www.wikidata.org/wiki/Q216817","display_name":"Emission spectrum","level":3,"score":0.4862000048160553},{"id":"https://openalex.org/C2779295263","wikidata":"https://www.wikidata.org/wiki/Q55644067","display_name":"K-line","level":3,"score":0.4602000117301941},{"id":"https://openalex.org/C117808444","wikidata":"https://www.wikidata.org/wiki/Q853005","display_name":"Eddington luminosity","level":4,"score":0.3650999963283539},{"id":"https://openalex.org/C195803813","wikidata":"https://www.wikidata.org/wiki/Q237604","display_name":"Accretion disc","level":2,"score":0.351500004529953},{"id":"https://openalex.org/C50341732","wikidata":"https://www.wikidata.org/wiki/Q880302","display_name":"Black hole (networking)","level":5,"score":0.34060001373291016},{"id":"https://openalex.org/C184779094","wikidata":"https://www.wikidata.org/wiki/Q26383","display_name":"Atomic physics","level":1,"score":0.3400000035762787},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.3070000112056732},{"id":"https://openalex.org/C31406616","wikidata":"https://www.wikidata.org/wiki/Q932483","display_name":"Forbidden mechanism","level":4,"score":0.30559998750686646},{"id":"https://openalex.org/C99692599","wikidata":"https://www.wikidata.org/wiki/Q596577","display_name":"Dissipative system","level":2,"score":0.3000999987125397},{"id":"https://openalex.org/C82706917","wikidata":"https://www.wikidata.org/wiki/Q10251","display_name":"Plasma","level":2,"score":0.2980000078678131},{"id":"https://openalex.org/C145148216","wikidata":"https://www.wikidata.org/wiki/Q36496","display_name":"Ion","level":2,"score":0.2930000126361847},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.27900001406669617},{"id":"https://openalex.org/C4839761","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Spectral line","level":2,"score":0.272599995136261},{"id":"https://openalex.org/C173220165","wikidata":"https://www.wikidata.org/wiki/Q653711","display_name":"Balmer series","level":4,"score":0.2694000005722046},{"id":"https://openalex.org/C12287442","wikidata":"https://www.wikidata.org/wiki/Q105902","display_name":"Luminosity","level":3,"score":0.25049999356269836}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2611.12595","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2611.12595","pdf_url":"https://arxiv.org/pdf/2611.12595","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":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2611.12595","doi":"https://doi.org/10.48550/arxiv.2611.12595","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2611.12595","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":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2611.12595","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2611.12595","pdf_url":"https://arxiv.org/pdf/2611.12595","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":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W7010454945","https://openalex.org/W2989983344","https://openalex.org/W4392186110","https://openalex.org/W3037466232","https://openalex.org/W4401687721","https://openalex.org/W2999302206","https://openalex.org/W2766160035","https://openalex.org/W4416585065","https://openalex.org/W4282978685","https://openalex.org/W6931259915"],"abstract_inverted_index":{"A":[0],"model":[1],"of":[2,8,50,58,132,143,213,216],"warm,":[3],"dissipative":[4],"corona":[5,74,182],"on":[6,54],"top":[7],"an":[9],"accretion":[10,164,206],"disk":[11,76],"is":[12,78,93,159,183,197,209,241],"investigated,":[13],"to":[14,75,120],"explain":[15],"the":[16,48,51,55,59,69,100,144,151,155,186,214,217,223,226],"soft":[17],"X-ray":[18],"excess":[19],"(SXE)":[20],"emission":[21,177],"observed":[22],"in":[23,104,166,171],"active":[24],"galactic":[25],"nuclei":[26],"(AGN).":[27],"The":[28,175,195],"final":[29],"ray-traced":[30],"spectrum,":[31],"computed":[32],"through":[33],"photoionization":[34],"code":[35],"with":[36,168],"Comptonization,":[37],"accounts":[38],"for":[39,161,203],"both:":[40],"emitted":[41,242],"and":[42,99,185,199,235],"reflected":[43],"components.":[44],"As":[45],"a":[46,87,108,129,162,180,193,204,210,236],"result,":[47],"strength":[49],"SXE":[52,156],"depends":[53],"radial":[56,70],"extend":[57],"warm":[60,73,181,218],"corona,":[61],"i.e.,":[62],"its":[63],"outer":[64],"edge.":[65],"We":[66,147],"show":[67],"that":[68,149],"transition":[71,125],"from":[72,86,179,192],"atmosphere":[77],"governed":[79],"by":[80,96,221],"line":[81,97,190,196,239],"cooling.":[82],"By":[83],"moving":[84],"away":[85],"central":[88],"black":[89,233],"hole":[90],"Compton":[91],"cooling":[92],"gradually":[94],"replaced":[95],"cooling,":[98],"temperature":[101],"drops":[102],"sharply":[103],"vertical":[105],"direction":[106],"at":[107,128,150],"narrow":[109],"iron":[110,114,188,224,227,238],"ionization":[111,228],"front,":[112],"where":[113],"ions":[115],"Fe":[116,121],"\\textsc{xxv}--Fe":[117],"\\textsc{xxvi}":[118],"recombine":[119],"\\textsc{xvii}.":[122],"Notably,":[123],"this":[124],"takes":[126],"place":[127],"particular":[130],"value":[131],"internal":[133],"heating":[134],"$\\approx":[135],"1.6":[136],"\\times":[137],"10^{-23}$":[138],"erg":[139],"cm$^{3}$":[140],"s$^{-1}$,":[141],"regardless":[142],"Eddington":[145],"ratio.":[146],"show,":[148],"given":[152],"metal":[153],"abundance,":[154,225],"emitting":[157],"area":[158],"larger":[160],"higher":[163],"rate,":[165,207],"agreement":[167],"recent":[169],"findings":[170],"changing":[172],"look":[173],"AGN.":[174],"overall":[176],"spectrum":[178],"featureless,":[184],"only":[187],"K$_\u03b1$":[189],"comes":[191],"reflection.":[194],"stronger":[198,237],"more":[200],"gravitationally":[201],"distorted":[202],"lower":[205],"which":[208],"direct":[211],"result":[212],"size":[215],"corona.":[219],"Furthermore,":[220],"increasing":[222],"front":[229],"moves":[230],"closer":[231],"towards":[232],"hole,":[234],"complex":[240],"locally.":[243]},"counts_by_year":[],"updated_date":"2026-11-13T13:42:25.865203","created_date":"2026-11-11T00:00:00"}