{"id":"https://openalex.org/W2162018505","doi":"https://doi.org/10.1111/j.1365-2966.2009.15301.x","title":"Studying X-ray reprocessing and continuum variability in quasars: PG 1211+143","display_name":"Studying X-ray reprocessing and continuum variability in quasars: PG 1211+143","publication_year":2009,"publication_date":"2009-08-24","ids":{"openalex":"https://openalex.org/W2162018505","doi":"https://doi.org/10.1111/j.1365-2966.2009.15301.x","mag":"2162018505"},"language":"en","primary_location":{"id":"doi:10.1111/j.1365-2966.2009.15301.x","doi":"https://doi.org/10.1111/j.1365-2966.2009.15301.x","is_oa":true,"landing_page_url":"https://doi.org/10.1111/j.1365-2966.2009.15301.x","pdf_url":"https://academic.oup.com/mnras/article-pdf/399/2/750/3634768/mnras0399-0750.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":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://academic.oup.com/mnras/article-pdf/399/2/750/3634768/mnras0399-0750.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5086358001","display_name":"R. Bachev","orcid":"https://orcid.org/0000-0002-0766-864X","observed_orcids":["https://orcid.org/0000-0002-0766-864X"]},"institutions":[{"id":"https://openalex.org/I24768866","display_name":"Bulgarian Academy of Sciences","ror":"https://ror.org/01x8hew03","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]},{"id":"https://openalex.org/I4210120893","display_name":"Institute of Astronomy and National Astronomical Observatory","ror":"https://ror.org/02s2qpg90","country_code":"BG","type":"facility","lineage":["https://openalex.org/I4210120893"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"R. Bachev","raw_affiliation_strings":["Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria","institution_ids":["https://openalex.org/I24768866","https://openalex.org/I4210120893"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5085544525","display_name":"D. Grupe","orcid":"https://orcid.org/0000-0002-9961-3661","observed_orcids":["https://orcid.org/0000-0002-9961-3661"]},"institutions":[{"id":"https://openalex.org/I130769515","display_name":"Pennsylvania State University","ror":"https://ror.org/04p491231","country_code":"US","type":"education","lineage":["https://openalex.org/I130769515"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"D. Grupe","raw_affiliation_strings":["Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA","institution_ids":["https://openalex.org/I130769515"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075269207","display_name":"S. Boeva","orcid":"https://orcid.org/0000-0002-1388-5907","observed_orcids":["https://orcid.org/0000-0002-1388-5907"]},"institutions":[{"id":"https://openalex.org/I24768866","display_name":"Bulgarian Academy of Sciences","ror":"https://ror.org/01x8hew03","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]},{"id":"https://openalex.org/I4210120893","display_name":"Institute of Astronomy and National Astronomical Observatory","ror":"https://ror.org/02s2qpg90","country_code":"BG","type":"facility","lineage":["https://openalex.org/I4210120893"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"S. Boeva","raw_affiliation_strings":["Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria","institution_ids":["https://openalex.org/I24768866","https://openalex.org/I4210120893"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5074017638","display_name":"Evgeni P. Ovcharov","orcid":"https://orcid.org/0000-0002-0589-0810","observed_orcids":["https://orcid.org/0000-0002-0589-0810"]},"institutions":[{"id":"https://openalex.org/I58918642","display_name":"Sofia University \"St. Kliment Ohridski\"","ror":"https://ror.org/02jv3k292","country_code":"BG","type":"education","lineage":["https://openalex.org/I58918642"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"E. Ovcharov","raw_affiliation_strings":["Department of Astronomy, Sofia University, 5 James Bourchier Street, 1164 Sofia, Bulgaria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Astronomy, Sofia University, 5 James Bourchier Street, 1164 Sofia, Bulgaria","institution_ids":["https://openalex.org/I58918642"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063205169","display_name":"Antoniya Valcheva","orcid":"https://orcid.org/0000-0002-2827-4105","observed_orcids":["https://orcid.org/0000-0002-2827-4105"]},"institutions":[{"id":"https://openalex.org/I24768866","display_name":"Bulgarian Academy of Sciences","ror":"https://ror.org/01x8hew03","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]},{"id":"https://openalex.org/I4210120893","display_name":"Institute of Astronomy and National Astronomical Observatory","ror":"https://ror.org/02s2qpg90","country_code":"BG","type":"facility","lineage":["https://openalex.org/I4210120893"]},{"id":"https://openalex.org/I58918642","display_name":"Sofia University \"St. Kliment Ohridski\"","ror":"https://ror.org/02jv3k292","country_code":"BG","type":"education","lineage":["https://openalex.org/I58918642"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"A. Valcheva","raw_affiliation_strings":["Department of Astronomy, Sofia University, 5 James Bourchier Street, 1164 Sofia, Bulgaria","Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Astronomy, Sofia University, 5 James Bourchier Street, 1164 Sofia, Bulgaria","institution_ids":["https://openalex.org/I58918642"]},{"raw_affiliation_string":"Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria","institution_ids":["https://openalex.org/I24768866","https://openalex.org/I4210120893"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5055179536","display_name":"Evgeni H. Semkov","orcid":"https://orcid.org/0000-0002-1839-3936","observed_orcids":["https://orcid.org/0000-0002-1839-3936"]},"institutions":[{"id":"https://openalex.org/I24768866","display_name":"Bulgarian Academy of Sciences","ror":"https://ror.org/01x8hew03","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]},{"id":"https://openalex.org/I4210120893","display_name":"Institute of Astronomy and National Astronomical Observatory","ror":"https://ror.org/02s2qpg90","country_code":"BG","type":"facility","lineage":["https://openalex.org/I4210120893"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"E. Semkov","raw_affiliation_strings":["Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria","institution_ids":["https://openalex.org/I24768866","https://openalex.org/I4210120893"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5047839142","display_name":"Ts. B. Georgiev","orcid":"https://orcid.org/0000-0003-4423-1516","observed_orcids":["https://orcid.org/0000-0003-4423-1516"]},"institutions":[{"id":"https://openalex.org/I24768866","display_name":"Bulgarian Academy of Sciences","ror":"https://ror.org/01x8hew03","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]},{"id":"https://openalex.org/I4210120893","display_name":"Institute of Astronomy and National Astronomical Observatory","ror":"https://ror.org/02s2qpg90","country_code":"BG","type":"facility","lineage":["https://openalex.org/I4210120893"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"Ts. Georgiev","raw_affiliation_strings":["Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Astronomy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria","institution_ids":["https://openalex.org/I24768866","https://openalex.org/I4210120893"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5016224296","display_name":"Luigi Gallo","orcid":"https://orcid.org/0009-0006-4968-7108","observed_orcids":["https://orcid.org/0009-0006-4968-7108"]},"institutions":[{"id":"https://openalex.org/I66890659","display_name":"Saint Mary's University","ror":"https://ror.org/010zh7098","country_code":"CA","type":"education","lineage":["https://openalex.org/I66890659"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"L. C. Gallo","raw_affiliation_strings":["Department of Astronomy and Physics, Saint Mary's University, Halifax, NS B3H 3C3, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Astronomy and Physics, Saint Mary's University, Halifax, NS B3H 3C3, Canada","institution_ids":["https://openalex.org/I66890659"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2310,"currency":"GBP","value_usd":3046},"apc_paid":null,"fwci":0.5058,"has_fulltext":true,"cited_by_count":24,"citation_normalized_percentile":{"value":0.66074285,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":87,"max":98},"biblio":{"volume":"399","issue":"2","first_page":"750","last_page":"761"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10744","display_name":"Astrophysical Phenomena and Observations","score":0.9937000274658203,"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":0.9937000274658203,"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":0.004900000058114529,"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":0.0003000000142492354,"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/pg-1211-143","display_name":"PG 1211+143","score":0.9990000128746033},{"id":"https://openalex.org/keywords/narrow-line-seyfert-1-galaxies","display_name":"narrow-line Seyfert 1 galaxies","score":0.972000002861023},{"id":"https://openalex.org/keywords/x-ray-reprocessing","display_name":"X-ray reprocessing","score":0.8859999775886536},{"id":"https://openalex.org/keywords/continuum-variability","display_name":"continuum variability","score":0.8100000023841858},{"id":"https://openalex.org/keywords/time-delay","display_name":"time delay","score":0.7260000109672546},{"id":"https://openalex.org/keywords/partial-covering-absorber","display_name":"partial covering absorber","score":0.8339999914169312},{"id":"https://openalex.org/keywords/x-ray-reflection","display_name":"X-ray reflection","score":0.8399999737739563},{"id":"https://openalex.org/keywords/thin-accretion-disks","display_name":"thin accretion disks","score":0.9089999794960022}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.9461938142776489},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.8708192110061646},{"id":"https://openalex.org/C68271606","wikidata":"https://www.wikidata.org/wiki/Q625648","display_name":"Photometry (optics)","level":3,"score":0.8230690956115723},{"id":"https://openalex.org/C135041427","wikidata":"https://www.wikidata.org/wiki/Q83373","display_name":"Quasar","level":3,"score":0.7996968030929565},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.6822159290313721},{"id":"https://openalex.org/C130726490","wikidata":"https://www.wikidata.org/wiki/Q675076","display_name":"Light curve","level":2,"score":0.6568566560745239},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.5719311833381653},{"id":"https://openalex.org/C195803813","wikidata":"https://www.wikidata.org/wiki/Q237604","display_name":"Accretion disc","level":2,"score":0.562797486782074},{"id":"https://openalex.org/C6260449","wikidata":"https://www.wikidata.org/wiki/Q41364","display_name":"Wavelength","level":2,"score":0.5132474899291992},{"id":"https://openalex.org/C116188536","wikidata":"https://www.wikidata.org/wiki/Q17118377","display_name":"Swift","level":2,"score":0.5011069774627686},{"id":"https://openalex.org/C4839761","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Spectral line","level":2,"score":0.4762190282344818},{"id":"https://openalex.org/C32891209","wikidata":"https://www.wikidata.org/wiki/Q483666","display_name":"Spectroscopy","level":2,"score":0.4372100234031677},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.14792799949645996},{"id":"https://openalex.org/C150846664","wikidata":"https://www.wikidata.org/wiki/Q7602306","display_name":"Stars","level":2,"score":0.14691156148910522}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.1111/j.1365-2966.2009.15301.x","doi":"https://doi.org/10.1111/j.1365-2966.2009.15301.x","is_oa":true,"landing_page_url":"https://doi.org/10.1111/j.1365-2966.2009.15301.x","pdf_url":"https://academic.oup.com/mnras/article-pdf/399/2/750/3634768/mnras0399-0750.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":"pmh:oai:arXiv.org:0906.4882","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/0906.4882","pdf_url":"https://arxiv.org/pdf/0906.4882","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:CiteSeerX.psu:10.1.1.249.3344","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.249.3344","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://arxiv.org/pdf/0906.4882v1.pdf","raw_type":"text"},{"id":"pmh:oai:library2.smu.ca:01/25894","doi":null,"is_oa":false,"landing_page_url":"http://library2.smu.ca/xmlui/handle/01/25894","pdf_url":null,"source":{"id":"https://openalex.org/S4306402189","display_name":"Saint Mary's University Institutional Repository (Saint Mary's University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I66890659","host_organization_name":"Saint Mary's University","host_organization_lineage":["https://openalex.org/I66890659"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Text"},{"id":"doi:10.48550/arxiv.0906.4882","doi":"https://doi.org/10.48550/arxiv.0906.4882","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.0906.4882","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:10.1111/j.1365-2966.2009.15301.x","doi":"https://doi.org/10.1111/j.1365-2966.2009.15301.x","is_oa":true,"landing_page_url":"https://doi.org/10.1111/j.1365-2966.2009.15301.x","pdf_url":"https://academic.oup.com/mnras/article-pdf/399/2/750/3634768/mnras0399-0750.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":[{"id":"https://openalex.org/G5630127497","display_name":"THE BIG BLUE BUMP IN ACTIVE GALACTIC NUCLEIIT IS A KNOWN FACT THAT (ALMOST) ALL GALAXIES HARBOR A SUPERMASSIVE BLACK HOLE IN THEIR CENTER. WHILE MOS","funder_award_id":"NNX07AH67G","funder_id":"https://openalex.org/F4320306101","funder_display_name":"National Aeronautics and Space Administration"},{"id":"https://openalex.org/G6193823157","display_name":null,"funder_award_id":"NAS5-00136","funder_id":"https://openalex.org/F4320306101","funder_display_name":"National Aeronautics and Space Administration"}],"funders":[{"id":"https://openalex.org/F4320306101","display_name":"National Aeronautics and Space Administration","ror":"https://ror.org/027ka1x80"},{"id":"https://openalex.org/F4320309398","display_name":"California Institute of Technology","ror":"https://ror.org/05dxps055"},{"id":"https://openalex.org/F4320332375","display_name":"Jet Propulsion Laboratory","ror":"https://ror.org/027k65916"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2162018505.pdf","grobid_xml":"https://content.openalex.org/works/W2162018505.grobid-xml"},"referenced_works_count":82,"referenced_works":["https://openalex.org/W151619541","https://openalex.org/W584471233","https://openalex.org/W1481833709","https://openalex.org/W1558094185","https://openalex.org/W1635968399","https://openalex.org/W1890522558","https://openalex.org/W1980840600","https://openalex.org/W1987036934","https://openalex.org/W1995263331","https://openalex.org/W1996932215","https://openalex.org/W1999469355","https://openalex.org/W2000069173","https://openalex.org/W2002044265","https://openalex.org/W2003325739","https://openalex.org/W2007545849","https://openalex.org/W2009786190","https://openalex.org/W2011776624","https://openalex.org/W2014323078","https://openalex.org/W2016205469","https://openalex.org/W2018041393","https://openalex.org/W2018572211","https://openalex.org/W2022269079","https://openalex.org/W2026116198","https://openalex.org/W2027737633","https://openalex.org/W2030154533","https://openalex.org/W2030199378","https://openalex.org/W2033220168","https://openalex.org/W2037098382","https://openalex.org/W2043384049","https://openalex.org/W2044040971","https://openalex.org/W2044663555","https://openalex.org/W2046618793","https://openalex.org/W2047905435","https://openalex.org/W2055726019","https://openalex.org/W2057106333","https://openalex.org/W2059686410","https://openalex.org/W2063605331","https://openalex.org/W2065603345","https://openalex.org/W2073639428","https://openalex.org/W2075373679","https://openalex.org/W2085196473","https://openalex.org/W2085587652","https://openalex.org/W2089986685","https://openalex.org/W2090903589","https://openalex.org/W2092423059","https://openalex.org/W2095631963","https://openalex.org/W2098892656","https://openalex.org/W2100195445","https://openalex.org/W2104021481","https://openalex.org/W2109709142","https://openalex.org/W2111817932","https://openalex.org/W2117948342","https://openalex.org/W2124587308","https://openalex.org/W2126173613","https://openalex.org/W2131110256","https://openalex.org/W2131379914","https://openalex.org/W2135894620","https://openalex.org/W2140126031","https://openalex.org/W2146380821","https://openalex.org/W2147834309","https://openalex.org/W2148437711","https://openalex.org/W2153415333","https://openalex.org/W2162283787","https://openalex.org/W2163505141","https://openalex.org/W2167553143","https://openalex.org/W2194080530","https://openalex.org/W2796705535","https://openalex.org/W2903101379","https://openalex.org/W2985443361","https://openalex.org/W3003811396","https://openalex.org/W3098855090","https://openalex.org/W3101472620","https://openalex.org/W3101777227","https://openalex.org/W3102563089","https://openalex.org/W3103146292","https://openalex.org/W3104633002","https://openalex.org/W3122470593","https://openalex.org/W3125040279","https://openalex.org/W3128285573","https://openalex.org/W4237020107","https://openalex.org/W4292403095","https://openalex.org/W4299527096"],"related_works":["https://openalex.org/W3103751925","https://openalex.org/W2400877447","https://openalex.org/W3152723066","https://openalex.org/W1975874020","https://openalex.org/W4387675080","https://openalex.org/W7098094999","https://openalex.org/W2266006691","https://openalex.org/W2046844249","https://openalex.org/W2071441167","https://openalex.org/W1640161676"],"abstract_inverted_index":{"We":[0,43],"present":[1],"the":[2,9,55,58,69,78,90,121,124,147,150,155,163,169,172,183,211,214],"results":[3],"from":[4,25,68,177],"a":[5,48,110,143,158],"monitoring":[6,60],"campaign":[7,61],"of":[8,57,146,157,213],"Narrow-Line":[10],"Seyfert":[11,98],"1":[12,99],"galaxy":[13],"PG":[14,45],"1211+143.":[15],"The":[16,86,138,165],"object":[17],"was":[18],"monitored":[19],"with":[20,31,154],"ground-based":[21],"facilities":[22],"(UBVRI":[23],"photometry;":[24,37],"2007":[26,39,63],"February":[27],"to":[28,95,120,133,179,192],"July)":[29],"and":[30,34,41,105,171],"Swift[X-ray":[32],"photometry/spectroscopy":[33],"ultraviolet":[35],"(UV)/optical":[36],"between":[38,135,168],"March":[40],"May].":[42],"found":[44],"1211+143":[46],"in":[47,62,76,83,89],"historical":[49],"low":[50,91,103],"X-ray":[51,87,117,170,215],"flux":[52],"state":[53,92],"at":[54],"beginning":[56],"Swift":[59],"March.":[64],"It":[65],"is":[66,93,130],"seen":[67],"light":[70,174],"curves":[71],"that":[72],"while":[73],"violently":[74],"variable":[75],"X-rays,":[77],"quasar":[79],"shows":[80],"little":[81],"variations":[82],"optical/UV":[84,173],"bands.":[85],"spectrum":[88],"similar":[94],"other":[96],"narrow-line":[97],"galaxies":[100],"during":[101],"their":[102],"states":[104],"can":[106],"be":[107,193],"explained":[108],"by":[109,116],"strong":[111],"partial":[112],"covering":[113],"absorber":[114],"or":[115],"reflection":[118],"on":[119],"disc.":[122],"With":[123],"current":[125],"data":[126],"set,":[127],"however,":[128],"it":[129],"not":[131],"possible":[132,144],"distinguish":[134],"both":[136],"scenarios.":[137],"interband":[139],"cross-correlation":[140],"functions":[141],"indicate":[142],"reprocessing":[145],"X-rays":[148],"into":[149,202],"longer":[151],"wavelengths,":[152],"consistent":[153],"idea":[156],"thin":[159],"accretion":[160,205],"disc,":[161],"powering":[162],"quasar.":[164],"time":[166],"lags":[167],"curves,":[175],"ranging":[176],"\u223c2":[178],"\u223c18":[180],"d":[181],"for":[182,198,210],"different":[184],"wavebands,":[185],"scale":[186],"approximately":[187],"as":[188],"\u223c\u03bb4/3,":[189],"but":[190],"appear":[191],"somewhat":[194],"larger":[195],"than":[196],"expected":[197],"this":[199],"object,":[200],"taking":[201],"account":[203],"its":[204],"disc":[206],"parameters.":[207],"Possible":[208],"implications":[209],"location":[212],"irradiating":[216],"source":[217],"are":[218],"discussed.":[219]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":4},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":3}],"updated_date":"2026-11-13T13:42:25.865203","created_date":"2016-06-24T00:00:00"}