Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2760808915', 'doi': 'https://doi.org/10.1093/mnras/sty1095', 'title': 'Wide-field LOFAR-LBA power-spectra analyses: impact of calibration, polarization leakage, and ionosphere', 'display_name': 'Wide-field LOFAR-LBA power-spectra analyses: impact of calibration, polarization leakage, and ionosphere', 'publication_year': 2018, 'publication_date': '2018-04-30', 'ids': {'openalex': 'https://openalex.org/W2760808915', 'doi': 'https://doi.org/10.1093/mnras/sty1095', 'mag': '2760808915'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1093/mnras/sty1095', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S195663288', 'display_name': 'Monthly Notices of the Royal Astronomical Society', 'issn_l': '0035-8711', 'issn': ['0035-8711', '1365-8711', '1365-2966'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311648', 'host_organization_name': 'Oxford University Press', 'host_organization_lineage': ['https://openalex.org/P4310311647', 'https://openalex.org/P4310311648'], 'host_organization_lineage_names': ['University of Oxford', 'Oxford University Press'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['arxiv', 'crossref', 'datacite'], 'open_access': {'is_oa': True, 'oa_status': 'green', 'oa_url': 'http://arxiv.org/pdf/1709.07727', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5033184981', 'display_name': 'B. K. Gehlot', 'orcid': 'https://orcid.org/0000-0002-3240-9228'}, 'institutions': [{'id': 'https://openalex.org/I169381384', 'display_name': 'University of Groningen', 'ror': 'https://ror.org/012p63287', 'country_code': 'NL', 'type': 'education', 'lineage': ['https://openalex.org/I169381384']}], 'countries': ['NL'], 'is_corresponding': True, 'raw_author_name': 'B K Gehlot', 'raw_affiliation_strings': ['Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'institution_ids': ['https://openalex.org/I169381384']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5091046334', 'display_name': 'L. V. E. Koopmans', 'orcid': 'https://orcid.org/0000-0003-1840-0312'}, 'institutions': [{'id': 'https://openalex.org/I169381384', 'display_name': 'University of Groningen', 'ror': 'https://ror.org/012p63287', 'country_code': 'NL', 'type': 'education', 'lineage': ['https://openalex.org/I169381384']}], 'countries': ['NL'], 'is_corresponding': True, 'raw_author_name': 'L V E Koopmans', 'raw_affiliation_strings': ['Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'institution_ids': ['https://openalex.org/I169381384']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5039626103', 'display_name': 'A. G. de Bruyn', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I169381384', 'display_name': 'University of Groningen', 'ror': 'https://ror.org/012p63287', 'country_code': 'NL', 'type': 'education', 'lineage': ['https://openalex.org/I169381384']}, {'id': 'https://openalex.org/I922237871', 'display_name': 'Netherlands Institute for Radio Astronomy', 'ror': 'https://ror.org/000k1q888', 'country_code': 'NL', 'type': 'other', 'lineage': ['https://openalex.org/I2800991832', 'https://openalex.org/I922237871']}], 'countries': ['NL'], 'is_corresponding': False, 'raw_author_name': 'A G de\xa0Bruyn', 'raw_affiliation_strings': ['ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'institution_ids': ['https://openalex.org/I169381384']}, {'raw_affiliation_string': 'ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'institution_ids': ['https://openalex.org/I922237871']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5106023588', 'display_name': 'S. Zaroubi', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I169381384', 'display_name': 'University of Groningen', 'ror': 'https://ror.org/012p63287', 'country_code': 'NL', 'type': 'education', 'lineage': ['https://openalex.org/I169381384']}, {'id': 'https://openalex.org/I164950643', 'display_name': 'Open University of Israel', 'ror': 'https://ror.org/027z64205', 'country_code': 'IL', 'type': 'education', 'lineage': ['https://openalex.org/I164950643']}], 'countries': ['IL', 'NL'], 'is_corresponding': False, 'raw_author_name': 'S Zaroubi', 'raw_affiliation_strings': ["Department of Natural Sciences, The Open University of Israel, 1 University Road, PO Box 808, Ra'anana 4353701, Israel", 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'institution_ids': ['https://openalex.org/I169381384']}, {'raw_affiliation_string': "Department of Natural Sciences, The Open University of Israel, 1 University Road, PO Box 808, Ra'anana 4353701, Israel", 'institution_ids': ['https://openalex.org/I164950643']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5012420270', 'display_name': 'M. A. Brentjens', 'orcid': 'https://orcid.org/0000-0002-2529-9251'}, 'institutions': [{'id': 'https://openalex.org/I922237871', 'display_name': 'Netherlands Institute for Radio Astronomy', 'ror': 'https://ror.org/000k1q888', 'country_code': 'NL', 'type': 'other', 'lineage': ['https://openalex.org/I2800991832', 'https://openalex.org/I922237871']}], 'countries': ['NL'], 'is_corresponding': False, 'raw_author_name': 'M A Brentjens', 'raw_affiliation_strings': ['ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'institution_ids': ['https://openalex.org/I922237871']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5054488635', 'display_name': 'K. M. B. Asad', 'orcid': 'https://orcid.org/0000-0002-2920-4117'}, 'institutions': [{'id': 'https://openalex.org/I169381384', 'display_name': 'University of Groningen', 'ror': 'https://ror.org/012p63287', 'country_code': 'NL', 'type': 'education', 'lineage': ['https://openalex.org/I169381384']}, {'id': 'https://openalex.org/I869660684', 'display_name': 'University of the Western Cape', 'ror': 'https://ror.org/00h2vm590', 'country_code': 'ZA', 'type': 'education', 'lineage': ['https://openalex.org/I869660684']}, {'id': 'https://openalex.org/I203238179', 'display_name': 'Rhodes University', 'ror': 'https://ror.org/016sewp10', 'country_code': 'ZA', 'type': 'education', 'lineage': ['https://openalex.org/I203238179']}, {'id': 'https://openalex.org/I4210107273', 'display_name': 'SKA Telescope, South Africa', 'ror': 'https://ror.org/01wtjj434', 'country_code': 'ZA', 'type': 'other', 'lineage': ['https://openalex.org/I4210107273', 'https://openalex.org/I4210108497']}], 'countries': ['NL', 'ZA'], 'is_corresponding': False, 'raw_author_name': 'K M B Asad', 'raw_affiliation_strings': ['Department of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown 6140, South Africa', 'Department of Physics, University of the Western Cape, Cape Town 7535, South Africa', 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'SKA South Africa, 3rd Floor, The Park, Park Road, Pinelands 7405, South Africa'], 'affiliations': [{'raw_affiliation_string': 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'institution_ids': ['https://openalex.org/I169381384']}, {'raw_affiliation_string': 'Department of Physics, University of the Western Cape, Cape Town 7535, South Africa', 'institution_ids': ['https://openalex.org/I869660684']}, {'raw_affiliation_string': 'Department of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown 6140, South Africa', 'institution_ids': ['https://openalex.org/I203238179']}, {'raw_affiliation_string': 'SKA South Africa, 3rd Floor, The Park, Park Road, Pinelands 7405, South Africa', 'institution_ids': ['https://openalex.org/I4210107273']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5011899868', 'display_name': 'M Hatef', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I169381384', 'display_name': 'University of Groningen', 'ror': 'https://ror.org/012p63287', 'country_code': 'NL', 'type': 'education', 'lineage': ['https://openalex.org/I169381384']}, {'id': 'https://openalex.org/I922237871', 'display_name': 'Netherlands Institute for Radio Astronomy', 'ror': 'https://ror.org/000k1q888', 'country_code': 'NL', 'type': 'other', 'lineage': ['https://openalex.org/I2800991832', 'https://openalex.org/I922237871']}], 'countries': ['NL'], 'is_corresponding': False, 'raw_author_name': 'M Hatef', 'raw_affiliation_strings': ['ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'institution_ids': ['https://openalex.org/I169381384']}, {'raw_affiliation_string': 'ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'institution_ids': ['https://openalex.org/I922237871']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5072712540', 'display_name': 'Vibor Jelić', 'orcid': 'https://orcid.org/0000-0002-6034-8610'}, 'institutions': [{'id': 'https://openalex.org/I922237871', 'display_name': 'Netherlands Institute for Radio Astronomy', 'ror': 'https://ror.org/000k1q888', 'country_code': 'NL', 'type': 'other', 'lineage': ['https://openalex.org/I2800991832', 'https://openalex.org/I922237871']}, {'id': 'https://openalex.org/I4210123216', 'display_name': 'Rudjer Boskovic Institute', 'ror': 'https://ror.org/02mw21745', 'country_code': 'HR', 'type': 'facility', 'lineage': ['https://openalex.org/I4210123216']}], 'countries': ['HR', 'NL'], 'is_corresponding': False, 'raw_author_name': 'V Jelić', 'raw_affiliation_strings': ['ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia'], 'affiliations': [{'raw_affiliation_string': 'ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'institution_ids': ['https://openalex.org/I922237871']}, {'raw_affiliation_string': 'Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia', 'institution_ids': ['https://openalex.org/I4210123216']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5105755361', 'display_name': 'M. Medinnis', 'orcid': 'https://orcid.org/0000-0002-3086-8455'}, 'institutions': [{'id': 'https://openalex.org/I169381384', 'display_name': 'University of Groningen', 'ror': 'https://ror.org/012p63287', 'country_code': 'NL', 'type': 'education', 'lineage': ['https://openalex.org/I169381384']}, {'id': 'https://openalex.org/I922237871', 'display_name': 'Netherlands Institute for Radio Astronomy', 'ror': 'https://ror.org/000k1q888', 'country_code': 'NL', 'type': 'other', 'lineage': ['https://openalex.org/I2800991832', 'https://openalex.org/I922237871']}], 'countries': ['NL'], 'is_corresponding': False, 'raw_author_name': 'M Mevius', 'raw_affiliation_strings': ['ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'institution_ids': ['https://openalex.org/I169381384']}, {'raw_affiliation_string': 'ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'institution_ids': ['https://openalex.org/I922237871']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5053391983', 'display_name': 'A. R. Offringa', 'orcid': 'https://orcid.org/0000-0002-5809-2783'}, 'institutions': [{'id': 'https://openalex.org/I922237871', 'display_name': 'Netherlands Institute for Radio Astronomy', 'ror': 'https://ror.org/000k1q888', 'country_code': 'NL', 'type': 'other', 'lineage': ['https://openalex.org/I2800991832', 'https://openalex.org/I922237871']}], 'countries': ['NL'], 'is_corresponding': False, 'raw_author_name': 'A R Offringa', 'raw_affiliation_strings': ['ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'institution_ids': ['https://openalex.org/I922237871']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5029264495', 'display_name': 'V. N. Pandey', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I169381384', 'display_name': 'University of Groningen', 'ror': 'https://ror.org/012p63287', 'country_code': 'NL', 'type': 'education', 'lineage': ['https://openalex.org/I169381384']}, {'id': 'https://openalex.org/I922237871', 'display_name': 'Netherlands Institute for Radio Astronomy', 'ror': 'https://ror.org/000k1q888', 'country_code': 'NL', 'type': 'other', 'lineage': ['https://openalex.org/I2800991832', 'https://openalex.org/I922237871']}], 'countries': ['NL'], 'is_corresponding': False, 'raw_author_name': 'V N Pandey', 'raw_affiliation_strings': ['ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'institution_ids': ['https://openalex.org/I169381384']}, {'raw_affiliation_string': 'ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'institution_ids': ['https://openalex.org/I922237871']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5075439666', 'display_name': 'S. Yatawatta', 'orcid': 'https://orcid.org/0000-0001-5619-4017'}, 'institutions': [{'id': 'https://openalex.org/I169381384', 'display_name': 'University of Groningen', 'ror': 'https://ror.org/012p63287', 'country_code': 'NL', 'type': 'education', 'lineage': ['https://openalex.org/I169381384']}, {'id': 'https://openalex.org/I922237871', 'display_name': 'Netherlands Institute for Radio Astronomy', 'ror': 'https://ror.org/000k1q888', 'country_code': 'NL', 'type': 'other', 'lineage': ['https://openalex.org/I2800991832', 'https://openalex.org/I922237871']}], 'countries': ['NL'], 'is_corresponding': False, 'raw_author_name': 'S Yatawatta', 'raw_affiliation_strings': ['ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands'], 'affiliations': [{'raw_affiliation_string': 'Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands', 'institution_ids': ['https://openalex.org/I169381384']}, {'raw_affiliation_string': 'ASTRON, PO Box 2, NL-7990AA Dwingeloo, the Netherlands', 'institution_ids': ['https://openalex.org/I922237871']}]}], 'institution_assertions': [], 'countries_distinct_count': 4, 'institutions_distinct_count': 7, 'corresponding_author_ids': ['https://openalex.org/A5033184981', 'https://openalex.org/A5091046334'], 'corresponding_institution_ids': ['https://openalex.org/I169381384', 'https://openalex.org/I169381384'], 'apc_list': {'value': 2310, 'currency': 'GBP', 'value_usd': 2833, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 1.785, 'has_fulltext': True, 'fulltext_origin': 'pdf', 'cited_by_count': 26, 'citation_normalized_percentile': {'value': 0.99995, 'is_in_top_1_percent': True, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 93, 'max': 94}, 'biblio': {'volume': '478', 'issue': '2', 'first_page': '1484', 'last_page': '1501'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12450', 'display_name': 'Radio Astronomy Techniques and Instruments', '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/T12450', 'display_name': 'Radio Astronomy Techniques and Instruments', '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/T10818', 'display_name': 'High-Energy Astrophysics and Particle Acceleration Studies', 'score': 0.9997, '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'}}, {'id': 'https://openalex.org/T10655', 'display_name': 'Global Navigation Satellite Systems (GNSS)', 'score': 0.9955, 'subfield': {'id': 'https://openalex.org/subfields/2202', 'display_name': 'Aerospace Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/lofar', 'display_name': 'LOFAR', 'score': 0.8617488}, {'id': 'https://openalex.org/keywords/21-cm-signal', 'display_name': '21 cm Signal', 'score': 0.503939}], 'concepts': [{'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.94658875}, {'id': 'https://openalex.org/C2780590096', 'wikidata': 'https://www.wikidata.org/wiki/Q104528246', 'display_name': 'LOFAR', 'level': 3, 'score': 0.8617488}, {'id': 'https://openalex.org/C205049153', 'wikidata': 'https://www.wikidata.org/wiki/Q2698605', 'display_name': 'Polarization (electrochemistry)', 'level': 2, 'score': 0.6510384}, {'id': 'https://openalex.org/C116403925', 'wikidata': 'https://www.wikidata.org/wiki/Q162219', 'display_name': 'Ionosphere', 'level': 2, 'score': 0.5851023}, {'id': 'https://openalex.org/C4839761', 'wikidata': 'https://www.wikidata.org/wiki/Q212111', 'display_name': 'Spectral line', 'level': 2, 'score': 0.5347527}, {'id': 'https://openalex.org/C44870925', 'wikidata': 'https://www.wikidata.org/wiki/Q37547', 'display_name': 'Astrophysics', 'level': 1, 'score': 0.4388646}, {'id': 'https://openalex.org/C1276947', 'wikidata': 'https://www.wikidata.org/wiki/Q333', 'display_name': 'Astronomy', 'level': 1, 'score': 0.39212063}, {'id': 'https://openalex.org/C62649853', 'wikidata': 'https://www.wikidata.org/wiki/Q199687', 'display_name': 'Remote sensing', 'level': 1, 'score': 0.37571788}, {'id': 'https://openalex.org/C104892082', 'wikidata': 'https://www.wikidata.org/wiki/Q17156810', 'display_name': 'Low frequency', 'level': 2, 'score': 0.14778036}, {'id': 'https://openalex.org/C127313418', 'wikidata': 'https://www.wikidata.org/wiki/Q1069', 'display_name': 'Geology', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C147789679', 'wikidata': 'https://www.wikidata.org/wiki/Q11372', 'display_name': 'Physical chemistry', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.0}], 'mesh': [], 'locations_count': 9, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1093/mnras/sty1095', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S195663288', 'display_name': 'Monthly Notices of the Royal Astronomical Society', 'issn_l': '0035-8711', 'issn': ['0035-8711', '1365-8711', '1365-2966'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311648', 'host_organization_name': 'Oxford University Press', 'host_organization_lineage': ['https://openalex.org/P4310311647', 'https://openalex.org/P4310311648'], 'host_organization_lineage_names': ['University of Oxford', 'Oxford University Press'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'http://arxiv.org/abs/1709.07727', 'pdf_url': 'http://arxiv.org/pdf/1709.07727', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'http://fulir.irb.hr/4129/', 'pdf_url': 'http://fulir.irb.hr/4129/1/1709.07727.pdf', 'source': {'id': 'https://openalex.org/S4306400095', 'display_name': 'Institutional Repository of the Ruđer Bošković Institute (Ruđer Bošković Institute)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I4210123216', 'host_organization_name': 'Rudjer Boskovic Institute', 'host_organization_lineage': ['https://openalex.org/I4210123216'], 'host_organization_lineage_names': ['Rudjer Boskovic Institute'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': True, 'landing_page_url': 'https://arxiv.org/abs/1709.07727', 'pdf_url': 'https://arxiv.org/pdf/1709.07727', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://pure.rug.nl/ws/files/67694545/sty1095.pdf', 'pdf_url': 'https://pure.rug.nl/ws/files/67694545/sty1095.pdf', 'source': {'id': 'https://openalex.org/S4306400420', 'display_name': 'University of Groningen research database (University of Groningen / Centre for Information Technology)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I169381384', 'host_organization_name': 'University of Groningen', 'host_organization_lineage': ['https://openalex.org/I169381384'], 'host_organization_lineage_names': ['University of Groningen'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://research.rug.nl/en/publications/617223ee-20bd-4f79-a206-63a99b4c29cb', 'pdf_url': 'https://research.rug.nl/files/67694545/sty1095.pdf', 'source': {'id': 'https://openalex.org/S4306401843', 'display_name': 'Data Archiving and Networked Services (DANS)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1322597698', 'host_organization_name': 'Royal Netherlands Academy of Arts and Sciences', 'host_organization_lineage': ['https://openalex.org/I1322597698'], 'host_organization_lineage_names': ['Royal Netherlands Academy of Arts and Sciences'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://pure.rug.nl/ws/files/112166632/widefield_lofarlba_powerspectra_analyses_impact_of_calibration_polarization_leakage_and_ionosphere.pdf', 'pdf_url': 'https://pure.rug.nl/ws/files/112166632/widefield_lofarlba_powerspectra_analyses_impact_of_calibration_polarization_leakage_and_ionosphere.pdf', 'source': {'id': 'https://openalex.org/S4306400420', 'display_name': 'University of Groningen research database (University of Groningen / Centre for Information Technology)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I169381384', 'host_organization_name': 'University of Groningen', 'host_organization_lineage': ['https://openalex.org/I169381384'], 'host_organization_lineage_names': ['University of Groningen'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://research.rug.nl/en/publications/5fa6b987-90d9-4ea0-ba2d-5c03726a8cc5', 'pdf_url': 'https://research.rug.nl/files/112166632/widefield_lofarlba_powerspectra_analyses_impact_of_calibration_polarization_leakage_and_ionosphere.pdf', 'source': {'id': 'https://openalex.org/S4306401843', 'display_name': 'Data Archiving and Networked Services (DANS)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1322597698', 'host_organization_name': 'Royal Netherlands Academy of Arts and Sciences', 'host_organization_lineage': ['https://openalex.org/I1322597698'], 'host_organization_lineage_names': ['Royal Netherlands Academy of Arts and Sciences'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://api.datacite.org/dois/10.48550/arxiv.1709.07727', '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': {'is_oa': True, 'landing_page_url': 'http://arxiv.org/abs/1709.07727', 'pdf_url': 'http://arxiv.org/pdf/1709.07727', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': ['https://openalex.org/W2760808915'], 'referenced_works_count': 79, 'referenced_works': ['https://openalex.org/W1499466692', 'https://openalex.org/W1525400123', 'https://openalex.org/W1554821233', 'https://openalex.org/W1555244070', 'https://openalex.org/W1591764244', 'https://openalex.org/W1613124003', 'https://openalex.org/W1751824744', 'https://openalex.org/W1772928909', 'https://openalex.org/W1789568444', 'https://openalex.org/W1912831216', 'https://openalex.org/W1971336066', 'https://openalex.org/W1974618482', 'https://openalex.org/W1975679485', 'https://openalex.org/W1976904290', 'https://openalex.org/W1979098855', 'https://openalex.org/W1981374430', 'https://openalex.org/W2014252221', 'https://openalex.org/W2019269490', 'https://openalex.org/W2025670910', 'https://openalex.org/W2036538916', 'https://openalex.org/W2039145096', 'https://openalex.org/W2055764299', 'https://openalex.org/W2073938066', 'https://openalex.org/W2074207509', 'https://openalex.org/W2075062108', 'https://openalex.org/W2084135442', 'https://openalex.org/W2102117219', 'https://openalex.org/W2102548673', 'https://openalex.org/W2109857586', 'https://openalex.org/W2111295688', 'https://openalex.org/W2114909577', 'https://openalex.org/W2115185242', 'https://openalex.org/W2116613037', 'https://openalex.org/W2144267149', 'https://openalex.org/W2147626801', 'https://openalex.org/W2147875900', 'https://openalex.org/W2152102610', 'https://openalex.org/W2153555715', 'https://openalex.org/W2154883262', 'https://openalex.org/W2156604019', 'https://openalex.org/W2160430658', 'https://openalex.org/W2165299443', 'https://openalex.org/W2165715486', 'https://openalex.org/W2167424847', 'https://openalex.org/W2170502516', 'https://openalex.org/W2171424597', 'https://openalex.org/W2186902863', 'https://openalex.org/W2234515242', 'https://openalex.org/W2256956407', 'https://openalex.org/W2275063742', 'https://openalex.org/W2289671972', 'https://openalex.org/W2338472148', 'https://openalex.org/W2345814028', 'https://openalex.org/W2350779563', 'https://openalex.org/W2406953026', 'https://openalex.org/W2486386552', 'https://openalex.org/W2499027688', 'https://openalex.org/W2530040139', 'https://openalex.org/W2597412078', 'https://openalex.org/W2624022630', 'https://openalex.org/W2760364493', 'https://openalex.org/W2951278318', 'https://openalex.org/W2962688527', 'https://openalex.org/W3098335703', 'https://openalex.org/W3099105380', 'https://openalex.org/W3099110931', 'https://openalex.org/W3100069415', 'https://openalex.org/W3103730211', 'https://openalex.org/W3104313907', 'https://openalex.org/W3105319710', 'https://openalex.org/W3121309853', 'https://openalex.org/W3123823230', 'https://openalex.org/W3124984781', 'https://openalex.org/W3155512834', 'https://openalex.org/W3194943206', 'https://openalex.org/W4291746798', 'https://openalex.org/W4297394806', 'https://openalex.org/W4300002067', 'https://openalex.org/W4301036594'], 'related_works': ['https://openalex.org/W4322006297', 'https://openalex.org/W4298274539', 'https://openalex.org/W4246176573', 'https://openalex.org/W2949477513', 'https://openalex.org/W2201504242', 'https://openalex.org/W2127107309', 'https://openalex.org/W2123458444', 'https://openalex.org/W2115182285', 'https://openalex.org/W2100487215', 'https://openalex.org/W1641688215'], 'abstract_inverted_index': {'Contamination': [0], 'due': [1, 108], 'to': [2, 109, 163], 'foregrounds': [3], '(Galactic': [4], 'and': [5, 9, 59, 68, 200, 212], 'extragalactic),': [6], 'calibration': [7, 60], 'errors,': [8, 65], 'ionospheric': [10, 69, 145, 174], 'effects': [11, 61, 199], 'poses': [12], 'major': [13], 'challenges': [14], 'in': [15, 24, 76, 85, 128, 193, 203, 218], 'the': [16, 19, 33, 77, 82, 91, 94, 180, 195, 219], 'detection': [17], 'of': [18, 27, 35, 39, 81, 138, 179, 197, 215], 'cosmic': [20], '21': [21], 'cm': [22], 'signal': [23], 'various': [25, 56], 'epoch': [26], 'reionization': [28], '(EoR)': [29], 'experiments.': [30], 'We': [31, 71, 101, 140], 'present': [32], 'results': [34], 'a': [36, 40, 73], 'pilot': [37], 'study': [38], 'field': [41, 58, 137], 'centred': [42], 'on': [43], '3C196': [44], 'using': [45], 'LOFAR': [46], '(LOw': [47], 'Frequency': [48], 'ARray)': [49], 'low-band': [50], '(56–70MHz)': [51], 'observations,': [52], 'where': [53], 'we': [54], 'quantify': [55], 'wide': [57], 'such': [62], 'as': [63], 'gain': [64], 'polarized': [66, 83], 'foregrounds,': [67], 'effects.': [70], 'observe': [72], "'pitchfork'": [74], 'structure': [75, 105], '2D': [78], 'power': [79], 'spectrum': [80], 'intensity': [84], 'delay-baseline': [86], 'space,': [87], 'which': [88, 131], 'leaks': [89], 'into': [90], 'modes': [92], 'beyond': [93], 'instrumental': [95, 111], 'horizon': [96], '[EoR/CD': [97], '(cosmic': [98], 'dawn)': [99], 'window].': [100], 'show': [102], 'that': [103], 'this': [104], 'largely': [106], 'arises': [107], 'strong': [110], 'polarization': [112], 'leakage': [113], '(\u2060|${\\sim': [114], '}30\\hbox{': [115], 'per': [116], 'cent}$|\u2060)': [117], 'towards': [118, 155, 167], 'Cas': [119, 156], 'A': [120, 157], '(∼21': [121], 'kJy': [122], 'at': [123, 152, 169, 186], '81': [124], 'MHz,': [125], 'brightest': [126], 'source': [127], 'northern': [129], 'sky),': [130], 'is': [132, 177], 'far': [133], 'away': [134], 'from': [135], 'primary': [136], 'view.': [139], 'measure': [141], 'an': [142], 'extremely': [143], 'small': [144], 'diffractive': [146, 182], 'scale': [147], '(rdiff': [148], '≈': [149], '430': [150], 'm': [151], '60': [153], 'MHz)': [154], 'resembling': [158], 'pure': [159], 'Kolmogorov': [160], 'turbulence': [161], 'compared': [162], 'rdiff∼': [164], '3−20': [165], 'km': [166], 'zenith': [168], '150': [170], 'MHz': [171], 'for': [172], 'typical': [173], 'conditions.': [175], 'This': [176], 'one': [178], 'smallest': [181], 'scales': [183], 'ever': [184], 'measured': [185], 'these': [187], 'frequencies.': [188], 'Our': [189], 'work': [190], 'provides': [191], 'insights': [192], 'understanding': [194], 'nature': [196], 'aforementioned': [198], 'mitigating': [201], 'them': [202], 'future': [204], 'CD': [205], 'observations': [206], '(e.g.': [207], 'with': [208], 'Square': [209], 'Kilometre': [210], 'Array-low': [211], 'Hydrogen': [213], 'Epoch': [214], 'Reionization': [216], 'Array)': [217], 'same': [220], 'frequency': [221], 'window.': [222]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2760808915', 'counts_by_year': [{'year': 2024, 'cited_by_count': 3}, {'year': 2023, 'cited_by_count': 3}, {'year': 2022, 'cited_by_count': 4}, {'year': 2021, 'cited_by_count': 4}, {'year': 2020, 'cited_by_count': 6}, {'year': 2019, 'cited_by_count': 2}, {'year': 2018, 'cited_by_count': 3}, {'year': 2017, 'cited_by_count': 1}], 'updated_date': '2024-09-17T17:07:04.088918', 'created_date': '2017-10-06'}