Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W3106241581', 'doi': 'https://doi.org/10.1016/s1384-1076(00)00017-8', 'title': 'Spectroscopic identification of ten faint hard X-ray sources discovered by Chandra', 'display_name': 'Spectroscopic identification of ten faint hard X-ray sources discovered by Chandra', 'publication_year': 2000, 'publication_date': '2000-05-01', 'ids': {'openalex': 'https://openalex.org/W3106241581', 'doi': 'https://doi.org/10.1016/s1384-1076(00)00017-8', 'mag': '3106241581'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s1384-1076(00)00017-8', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S102436923', 'display_name': 'New Astronomy', 'issn_l': '1384-1076', 'issn': ['1384-1076', '1384-1092'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'datacite'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5051825718', 'display_name': 'F. Fiore', 'orcid': 'https://orcid.org/0000-0002-7019-3464'}, 'institutions': [{'id': 'https://openalex.org/I2800313864', 'display_name': 'Astronomical Observatory of Rome', 'ror': 'https://ror.org/02hnp4676', 'country_code': 'IT', 'type': 'facility', 'lineage': ['https://openalex.org/I2800313864', 'https://openalex.org/I875825670']}, {'id': 'https://openalex.org/I4210124175', 'display_name': 'Center for Astrophysics Harvard & Smithsonian', 'ror': 'https://ror.org/03c3r2d17', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I103187081', 'https://openalex.org/I136199984', 'https://openalex.org/I4210124175']}], 'countries': ['IT', 'US'], 'is_corresponding': True, 'raw_author_name': 'F. Fiore', 'raw_affiliation_strings': ['BeppoSAX Science Data Center, Via Corcolle 19, I-00131 Roma, Italy', 'Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA', 'Osservatorio Astronomico di Roma, Via Frascati 33, I-00044 Monteporzio Catone, Italy'], 'affiliations': [{'raw_affiliation_string': 'Osservatorio Astronomico di Roma, Via Frascati 33, I-00044 Monteporzio Catone, Italy', 'institution_ids': ['https://openalex.org/I2800313864']}, {'raw_affiliation_string': 'Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA', 'institution_ids': ['https://openalex.org/I4210124175']}, {'raw_affiliation_string': 'BeppoSAX Science Data Center, Via Corcolle 19, I-00131 Roma, Italy', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5029486654', 'display_name': 'F. La Franca', 'orcid': 'https://orcid.org/0000-0002-1239-2721'}, 'institutions': [{'id': 'https://openalex.org/I119003972', 'display_name': 'Roma Tre University', 'ror': 'https://ror.org/05vf0dg29', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I119003972']}], 'countries': ['IT'], 'is_corresponding': True, 'raw_author_name': 'F. La Franca', 'raw_affiliation_strings': ['Dipartimento di Fisica, Università degli Studi "Roma Tre", Via della Vasca Navale 84, I-00146 Roma, Italy'], 'affiliations': [{'raw_affiliation_string': 'Dipartimento di Fisica, Università degli Studi "Roma Tre", Via della Vasca Navale 84, I-00146 Roma, Italy', 'institution_ids': ['https://openalex.org/I119003972']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5026515938', 'display_name': 'C. Vignali', 'orcid': 'https://orcid.org/0000-0002-8853-9611'}, 'institutions': [{'id': 'https://openalex.org/I4210086498', 'display_name': 'Osservatorio astronomico di Bologna', 'ror': 'https://ror.org/002hc6y19', 'country_code': 'IT', 'type': 'facility', 'lineage': ['https://openalex.org/I4210086498', 'https://openalex.org/I875825670']}, {'id': 'https://openalex.org/I9360294', 'display_name': 'University of Bologna', 'ror': 'https://ror.org/01111rn36', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I9360294']}], 'countries': ['IT'], 'is_corresponding': True, 'raw_author_name': 'C. Vignali', 'raw_affiliation_strings': ['Dipartimento di Astronomia, Università di Bologna, via Ranzani 1, I-40127 Bologna, Italy', 'Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy'], 'affiliations': [{'raw_affiliation_string': 'Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy', 'institution_ids': ['https://openalex.org/I4210086498']}, {'raw_affiliation_string': 'Dipartimento di Astronomia, Università di Bologna, via Ranzani 1, I-40127 Bologna, Italy', 'institution_ids': ['https://openalex.org/I4210086498', 'https://openalex.org/I9360294']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5064367137', 'display_name': 'A. Comastri', 'orcid': 'https://orcid.org/0000-0003-3451-9970'}, 'institutions': [{'id': 'https://openalex.org/I4210086498', 'display_name': 'Osservatorio astronomico di Bologna', 'ror': 'https://ror.org/002hc6y19', 'country_code': 'IT', 'type': 'facility', 'lineage': ['https://openalex.org/I4210086498', 'https://openalex.org/I875825670']}], 'countries': ['IT'], 'is_corresponding': True, 'raw_author_name': 'A. Comastri', 'raw_affiliation_strings': ['Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy'], 'affiliations': [{'raw_affiliation_string': 'Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy', 'institution_ids': ['https://openalex.org/I4210086498']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5026031896', 'display_name': 'G. Matt', 'orcid': 'https://orcid.org/0000-0002-2152-0916'}, 'institutions': [{'id': 'https://openalex.org/I119003972', 'display_name': 'Roma Tre University', 'ror': 'https://ror.org/05vf0dg29', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I119003972']}], 'countries': ['IT'], 'is_corresponding': True, 'raw_author_name': 'G. Matt', 'raw_affiliation_strings': ['Dipartimento di Fisica, Università degli Studi "Roma Tre", Via della Vasca Navale 84, I-00146 Roma, Italy'], 'affiliations': [{'raw_affiliation_string': 'Dipartimento di Fisica, Università degli Studi "Roma Tre", Via della Vasca Navale 84, I-00146 Roma, Italy', 'institution_ids': ['https://openalex.org/I119003972']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5025486244', 'display_name': 'G. C. Perola', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I119003972', 'display_name': 'Roma Tre University', 'ror': 'https://ror.org/05vf0dg29', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I119003972']}], 'countries': ['IT'], 'is_corresponding': True, 'raw_author_name': 'G.C. Perola', 'raw_affiliation_strings': ['Dipartimento di Fisica, Università degli Studi "Roma Tre", Via della Vasca Navale 84, I-00146 Roma, Italy'], 'affiliations': [{'raw_affiliation_string': 'Dipartimento di Fisica, Università degli Studi "Roma Tre", Via della Vasca Navale 84, I-00146 Roma, Italy', 'institution_ids': ['https://openalex.org/I119003972']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5082880965', 'display_name': 'M. Cappi', 'orcid': 'https://orcid.org/0000-0001-6966-8920'}, 'institutions': [{'id': 'https://openalex.org/I4210124175', 'display_name': 'Center for Astrophysics Harvard & Smithsonian', 'ror': 'https://ror.org/03c3r2d17', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I103187081', 'https://openalex.org/I136199984', 'https://openalex.org/I4210124175']}], 'countries': ['US'], 'is_corresponding': True, 'raw_author_name': 'M. Cappi', 'raw_affiliation_strings': ['Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA', 'Istituto Tecnologie e Studio Radiazioni Extraterrestri, CNR, Via Gobetti 101, I-40129 Bologna, Italy'], 'affiliations': [{'raw_affiliation_string': 'Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA', 'institution_ids': ['https://openalex.org/I4210124175']}, {'raw_affiliation_string': 'Istituto Tecnologie e Studio Radiazioni Extraterrestri, CNR, Via Gobetti 101, I-40129 Bologna, Italy', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5002705377', 'display_name': 'M. Elvis', 'orcid': 'https://orcid.org/0000-0001-5060-1398'}, 'institutions': [{'id': 'https://openalex.org/I4210124175', 'display_name': 'Center for Astrophysics Harvard & Smithsonian', 'ror': 'https://ror.org/03c3r2d17', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I103187081', 'https://openalex.org/I136199984', 'https://openalex.org/I4210124175']}], 'countries': ['US'], 'is_corresponding': True, 'raw_author_name': 'M. Elvis', 'raw_affiliation_strings': ['Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA'], 'affiliations': [{'raw_affiliation_string': 'Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA', 'institution_ids': ['https://openalex.org/I4210124175']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5052348855', 'display_name': 'F. Nicastro', 'orcid': 'https://orcid.org/0000-0002-6896-1364'}, 'institutions': [{'id': 'https://openalex.org/I2800313864', 'display_name': 'Astronomical Observatory of Rome', 'ror': 'https://ror.org/02hnp4676', 'country_code': 'IT', 'type': 'facility', 'lineage': ['https://openalex.org/I2800313864', 'https://openalex.org/I875825670']}, {'id': 'https://openalex.org/I4210124175', 'display_name': 'Center for Astrophysics Harvard & Smithsonian', 'ror': 'https://ror.org/03c3r2d17', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I103187081', 'https://openalex.org/I136199984', 'https://openalex.org/I4210124175']}], 'countries': ['IT', 'US'], 'is_corresponding': True, 'raw_author_name': 'F. Nicastro', 'raw_affiliation_strings': ['Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA', 'Osservatorio Astronomico di Roma, Via Frascati 33, I-00044 Monteporzio Catone, Italy'], 'affiliations': [{'raw_affiliation_string': 'Osservatorio Astronomico di Roma, Via Frascati 33, I-00044 Monteporzio Catone, Italy', 'institution_ids': ['https://openalex.org/I2800313864']}, {'raw_affiliation_string': 'Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA', 'institution_ids': ['https://openalex.org/I4210124175']}]}], 'institution_assertions': [], 'countries_distinct_count': 2, 'institutions_distinct_count': 5, 'corresponding_author_ids': ['https://openalex.org/A5051825718', 'https://openalex.org/A5029486654', 'https://openalex.org/A5026515938', 'https://openalex.org/A5064367137', 'https://openalex.org/A5026031896', 'https://openalex.org/A5025486244', 'https://openalex.org/A5082880965', 'https://openalex.org/A5002705377', 'https://openalex.org/A5052348855'], 'corresponding_institution_ids': ['https://openalex.org/I2800313864', 'https://openalex.org/I4210124175', 'https://openalex.org/I119003972', 'https://openalex.org/I4210086498', 'https://openalex.org/I9360294', 'https://openalex.org/I4210086498', 'https://openalex.org/I119003972', 'https://openalex.org/I119003972', 'https://openalex.org/I4210124175', 'https://openalex.org/I4210124175', 'https://openalex.org/I2800313864', 'https://openalex.org/I4210124175'], 'apc_list': {'value': 2790, 'currency': 'USD', 'value_usd': 2790, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 9.327, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 38, 'citation_normalized_percentile': {'value': 0.907499, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 90, 'max': 91}, 'biblio': {'volume': '5', 'issue': '3', 'first_page': '143', 'last_page': '153'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10744', 'display_name': 'Astrophysical Studies of Black Holes', 'score': 0.9999, '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 Studies of Black Holes', 'score': 0.9999, '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': 'Galaxy Formation and Evolution in the Universe', 'score': 0.999, '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/T11323', 'display_name': 'Gamma-Ray Bursts and Supernovae Connections', 'score': 0.9913, '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/line', 'display_name': 'Line (geometry)', 'score': 0.53029567}, {'id': 'https://openalex.org/keywords/gravitational-lensing', 'display_name': 'Gravitational Lensing', 'score': 0.446915}], 'concepts': [{'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.97238314}, {'id': 'https://openalex.org/C44870925', 'wikidata': 'https://www.wikidata.org/wiki/Q37547', 'display_name': 'Astrophysics', 'level': 1, 'score': 0.91705155}, {'id': 'https://openalex.org/C98444146', 'wikidata': 'https://www.wikidata.org/wiki/Q318', 'display_name': 'Galaxy', 'level': 2, 'score': 0.7597842}, {'id': 'https://openalex.org/C33024259', 'wikidata': 'https://www.wikidata.org/wiki/Q76250', 'display_name': 'Redshift', 'level': 3, 'score': 0.687273}, {'id': 'https://openalex.org/C12287442', 'wikidata': 'https://www.wikidata.org/wiki/Q105902', 'display_name': 'Luminosity', 'level': 3, 'score': 0.660936}, {'id': 'https://openalex.org/C1276947', 'wikidata': 'https://www.wikidata.org/wiki/Q333', 'display_name': 'Astronomy', 'level': 1, 'score': 0.5413762}, {'id': 'https://openalex.org/C96141758', 'wikidata': 'https://www.wikidata.org/wiki/Q216817', 'display_name': 'Emission spectrum', 'level': 3, 'score': 0.53096926}, {'id': 'https://openalex.org/C198352243', 'wikidata': 'https://www.wikidata.org/wiki/Q37105', 'display_name': 'Line (geometry)', 'level': 2, 'score': 0.53029567}, {'id': 'https://openalex.org/C135041427', 'wikidata': 'https://www.wikidata.org/wiki/Q83373', 'display_name': 'Quasar', 'level': 3, 'score': 0.5297925}, {'id': 'https://openalex.org/C68709404', 'wikidata': 'https://www.wikidata.org/wiki/Q1134475', 'display_name': 'Flux (metallurgy)', 'level': 2, 'score': 0.51283556}, {'id': 'https://openalex.org/C43481613', 'wikidata': 'https://www.wikidata.org/wiki/Q46587', 'display_name': 'Active galactic nucleus', 'level': 3, 'score': 0.4810079}, {'id': 'https://openalex.org/C2779328170', 'wikidata': 'https://www.wikidata.org/wiki/Q34777', 'display_name': 'X-ray', 'level': 2, 'score': 0.4574082}, {'id': 'https://openalex.org/C4839761', 'wikidata': 'https://www.wikidata.org/wiki/Q212111', 'display_name': 'Spectral line', 'level': 2, 'score': 0.35923925}, {'id': 'https://openalex.org/C2524010', 'wikidata': 'https://www.wikidata.org/wiki/Q8087', 'display_name': 'Geometry', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, '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}], 'mesh': [], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s1384-1076(00)00017-8', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S102436923', 'display_name': 'New Astronomy', 'issn_l': '1384-1076', 'issn': ['1384-1076', '1384-1092'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://api.datacite.org/dois/10.48550/arxiv.astro-ph/0003273', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4393179698', 'display_name': 'DataCite API', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I4210145204', 'host_organization_name': 'DataCite', 'host_organization_lineage': ['https://openalex.org/I4210145204'], 'host_organization_lineage_names': ['DataCite'], 'type': 'metadata'}, 'license': None, 'license_id': None, 'version': None}], 'best_oa_location': None, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': ['https://openalex.org/W2132565697', 'https://openalex.org/W3106241581'], 'referenced_works_count': 40, 'referenced_works': ['https://openalex.org/W1612145927', 'https://openalex.org/W1626044688', 'https://openalex.org/W1964938112', 'https://openalex.org/W1967399612', 'https://openalex.org/W1967976588', 'https://openalex.org/W1970592619', 'https://openalex.org/W1984286846', 'https://openalex.org/W1986962723', 'https://openalex.org/W1997313837', 'https://openalex.org/W2001562993', 'https://openalex.org/W2002044265', 'https://openalex.org/W2004382564', 'https://openalex.org/W2008195483', 'https://openalex.org/W2017042247', 'https://openalex.org/W2019511225', 'https://openalex.org/W2040389071', 'https://openalex.org/W2041216883', 'https://openalex.org/W2050665335', 'https://openalex.org/W2053488603', 'https://openalex.org/W2053852021', 'https://openalex.org/W2054627804', 'https://openalex.org/W2059038547', 'https://openalex.org/W2075959687', 'https://openalex.org/W2079798341', 'https://openalex.org/W2086879135', 'https://openalex.org/W2090691918', 'https://openalex.org/W2093201437', 'https://openalex.org/W2101335960', 'https://openalex.org/W2112730553', 'https://openalex.org/W2127501852', 'https://openalex.org/W2132565697', 'https://openalex.org/W2140601996', 'https://openalex.org/W2154680116', 'https://openalex.org/W3009626537', 'https://openalex.org/W3102496644', 'https://openalex.org/W3106241581', 'https://openalex.org/W3148215482', 'https://openalex.org/W3184861960', 'https://openalex.org/W4244040307', 'https://openalex.org/W655905751'], 'related_works': ['https://openalex.org/W4387341579', 'https://openalex.org/W4386554958', 'https://openalex.org/W4365456836', 'https://openalex.org/W4245324564', 'https://openalex.org/W4244234179', 'https://openalex.org/W3125637177', 'https://openalex.org/W2063908823', 'https://openalex.org/W2041294110', 'https://openalex.org/W2021442228', 'https://openalex.org/W1983041714'], 'abstract_inverted_index': {'We': [0], 'report': [1], 'optical': [2, 69, 138, 148, 182], 'spectroscopic': [3], 'identifications': [4], 'of': [5, 19, 53, 71, 135, 150, 165, 172, 181], '10': [6], 'hard': [7], '(2–10': [8], 'keV)': [9], 'X-ray': [10, 17, 80, 123, 136, 145, 176], 'selected': [11], 'sources': [12, 21, 56], 'discovered': [13], 'by': [14], 'Chandra.': [15], 'The': [16, 140, 174], 'flux': [18], 'the': [20, 29, 49, 54, 68, 72, 125, 143, 147, 151, 179], 'ranges': [22], 'between': [23, 63, 142], '1.5': [24], 'and': [25, 40, 65, 89, 102, 118, 137, 146, 168, 178], '25': [26], '×10−14': [27], 'ergcm−2s−1,': [28], 'lower': [30], 'value': [31], 'being': [32], '3': [33], 'times': [34], 'fainter': [35, 122], 'than': [36, 163], 'in': [37, 48, 128, 188], 'previous': [38], 'BeppoSAX': [39, 126], 'ASCA': [41], 'surveys.': [42], 'Their': [43], 'R': [44], 'band': [45], 'magnitudes': [46], 'are': [47, 57, 79, 197], 'range': [50, 134], '12.8–22.': [51], 'Six': [52], 'Chandra': [55], 'broad': [58], 'line': [59, 83], 'quasars': [60], 'with': [61, 131], 'redshifts': [62], '0.42': [64], '1.19,': [66], 'while': [67], 'identification': [70], 'remaining': [73], 'four': [74], 'is': [75, 94, 106, 156], 'quite': [76], 'varied:': [77], 'two': [78], 'obscured,': [81], 'emission': [82, 183, 195], 'AGN': [84, 187], 'at': [85, 98, 111, 159], 'z': [86, 90, 99, 112, 152], '=': [87, 91, 100, 113, 153], '0.272': [88], '0.683,': [92], 'one': [93], 'a': [95, 132, 157], 'starburst': [96], 'galaxy': [97, 110, 155], '0.016': [101], 'one,': [103], 'most': [104], 'unusually,': [105], 'an': [107, 186], 'apparently': [108], 'normal': [109, 166], '0.158.': [114], 'These': [115], 'findings': [116], 'confirm': [117], 'extend': [119], 'down': [120], 'to': [121, 170], 'fluxes': [124], 'results,': [127], 'providing': [129], 'samples': [130], 'wide': [133], 'properties.': [139], 'ratio': [141], 'soft': [144], 'luminosity': [149, 177], '0.158': [154], 'factor': [158], 'least': [160], '30': [161], 'higher': [162], 'that': [164], 'galaxies,': [167], 'similar': [169], 'those': [171], 'AGN.': [173], 'high': [175], 'lack': [180], 'lines': [184, 196], 'suggest': [185], 'which': [189], 'either': [190], 'continuum': [191], 'beaming': [192], 'dominates,': [193], 'or': [194, 199], 'obscured': [198], 'not': [200], 'efficiently': [201], 'produced.': [202]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W3106241581', 'counts_by_year': [{'year': 2023, 'cited_by_count': 1}, {'year': 2018, 'cited_by_count': 1}, {'year': 2016, 'cited_by_count': 2}, {'year': 2012, 'cited_by_count': 1}], 'updated_date': '2024-09-23T20:27:24.216345', 'created_date': '2020-11-23'}