{"id":"https://openalex.org/W7213608915","doi":"https://doi.org/10.48550/arxiv.2609.20745","title":"Low Frequency Radio Imaging Study of PSR J1818-1607","display_name":"Low Frequency Radio Imaging Study of PSR J1818-1607","publication_year":2026,"publication_date":"2026-09-17","ids":{"openalex":"https://openalex.org/W7213608915","doi":"https://doi.org/10.48550/arxiv.2609.20745"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2609.20745","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2609.20745","pdf_url":"https://arxiv.org/pdf/2609.20745","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"},"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/2609.20745","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5152120958","display_name":"A. Yadav","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I288749910","display_name":"Indian Institute of Science Education and Research, Bhopal","ror":"https://ror.org/02rb21j89","country_code":"IN","type":"education","lineage":["https://openalex.org/I288749910"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Yadav, A.","raw_affiliation_strings":["Department of Physics , IISER Bhopal , Bhauri Bypass Road , Bhopal , 462066 , Madhya Pradesh , India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics , IISER Bhopal , Bhauri Bypass Road , Bhopal , 462066 , Madhya Pradesh , India","institution_ids":["https://openalex.org/I288749910"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082990323","display_name":"Mayuresh P. Surnis","orcid":"https://orcid.org/0000-0002-9507-6985","observed_orcids":["https://orcid.org/0000-0002-9507-6985"]},"institutions":[{"id":"https://openalex.org/I288749910","display_name":"Indian Institute of Science Education and Research, Bhopal","ror":"https://ror.org/02rb21j89","country_code":"IN","type":"education","lineage":["https://openalex.org/I288749910"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Surnis, M. P.","raw_affiliation_strings":["Department of Physics , IISER Bhopal , Bhauri Bypass Road , Bhopal , 462066 , Madhya Pradesh , India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics , IISER Bhopal , Bhauri Bypass Road , Bhopal , 462066 , Madhya Pradesh , India","institution_ids":["https://openalex.org/I288749910"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5073580143","display_name":"Bhal Chandra Joshi","orcid":"https://orcid.org/0000-0002-0863-7781","observed_orcids":["https://orcid.org/0000-0002-0863-7781"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Joshi, B. C.","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5058731960","display_name":"Manjari Bagchi","orcid":"https://orcid.org/0000-0001-8640-8186","observed_orcids":["https://orcid.org/0000-0001-8640-8186"]},"institutions":[{"id":"https://openalex.org/I200207707","display_name":"Homi Bhabha National Institute","ror":"https://ror.org/02bv3zr67","country_code":"IN","type":"education","lineage":["https://openalex.org/I200207707"]},{"id":"https://openalex.org/I59611059","display_name":"Institute of Mathematical Sciences","ror":"https://ror.org/05078rg59","country_code":"IN","type":"facility","lineage":["https://openalex.org/I59611059"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Bagchi, M.","raw_affiliation_strings":["Homi Bhabha National Institute , Training School Complex , Anushakti Nagar , Mumbai , 400094 , Maharashtra , India","The Institute of Mathematical Sciences , C.I.T. Campus , Taramani , Chennai , 600113 , Tamilnadu , India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Homi Bhabha National Institute , Training School Complex , Anushakti Nagar , Mumbai , 400094 , Maharashtra , India","institution_ids":["https://openalex.org/I200207707"]},{"raw_affiliation_string":"The Institute of Mathematical Sciences , C.I.T. Campus , Taramani , Chennai , 600113 , Tamilnadu , India","institution_ids":["https://openalex.org/I59611059"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"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/T10463","display_name":"Pulsars and Gravitational Waves Research","score":0.9077000021934509,"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/T10463","display_name":"Pulsars and Gravitational Waves Research","score":0.9077000021934509,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10744","display_name":"Astrophysical Phenomena and Observations","score":0.03830000013113022,"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/T12450","display_name":"Radio Astronomy Observations and Technology","score":0.01889999955892563,"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/magnetars","display_name":"magnetars","score":0.8790000081062317},{"id":"https://openalex.org/keywords/low-frequency-radio-imaging","display_name":"low-frequency radio imaging","score":0.7590000033378601},{"id":"https://openalex.org/keywords/radio-flares","display_name":"radio flares","score":0.7630000114440918},{"id":"https://openalex.org/keywords/flux-density-variability","display_name":"flux density variability","score":0.7310000061988831},{"id":"https://openalex.org/keywords/spectral-index-variations","display_name":"spectral index variations","score":0.7630000114440918},{"id":"https://openalex.org/keywords/radio-emission-mechanisms","display_name":"radio emission mechanisms","score":0.9359999895095825},{"id":"https://openalex.org/keywords/diffuse-radio-emission","display_name":"diffuse radio emission","score":0.7070000171661377},{"id":"https://openalex.org/keywords/giant-metrewave-radio-telescope","display_name":"GMRT","score":0.9240000247955322}],"concepts":[{"id":"https://openalex.org/C2780119159","wikidata":"https://www.wikidata.org/wiki/Q1522736","display_name":"Giant Metrewave Radio Telescope","level":4,"score":0.9631999731063843},{"id":"https://openalex.org/C86888617","wikidata":"https://www.wikidata.org/wiki/Q190426","display_name":"Magnetar","level":3,"score":0.9416000247001648},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.8367000222206116},{"id":"https://openalex.org/C42061751","wikidata":"https://www.wikidata.org/wiki/Q2280060","display_name":"Spectral index","level":3,"score":0.7695000171661377},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.6866000294685364},{"id":"https://openalex.org/C92545706","wikidata":"https://www.wikidata.org/wiki/Q902174","display_name":"Radio spectrum","level":2,"score":0.4997999966144562},{"id":"https://openalex.org/C110363677","wikidata":"https://www.wikidata.org/wiki/Q4360","display_name":"Pulsar","level":2,"score":0.4941999912261963},{"id":"https://openalex.org/C68709404","wikidata":"https://www.wikidata.org/wiki/Q1134475","display_name":"Flux (metallurgy)","level":2,"score":0.4771000146865845},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.4733999967575073},{"id":"https://openalex.org/C104892082","wikidata":"https://www.wikidata.org/wiki/Q17156810","display_name":"Low frequency","level":2,"score":0.42309999465942383},{"id":"https://openalex.org/C150143219","wikidata":"https://www.wikidata.org/wiki/Q4306","display_name":"Radio astronomy","level":2,"score":0.40380001068115234},{"id":"https://openalex.org/C161813005","wikidata":"https://www.wikidata.org/wiki/Q184356","display_name":"Radio telescope","level":2,"score":0.39419999718666077},{"id":"https://openalex.org/C2780848835","wikidata":"https://www.wikidata.org/wiki/Q4213","display_name":"Telescope","level":2,"score":0.3935999870300293},{"id":"https://openalex.org/C4839761","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Spectral line","level":2,"score":0.359499990940094},{"id":"https://openalex.org/C2983668108","wikidata":"https://www.wikidata.org/wiki/Q280453","display_name":"Spectral analysis","level":3,"score":0.3546000123023987},{"id":"https://openalex.org/C74064498","wikidata":"https://www.wikidata.org/wiki/Q3396184","display_name":"Radio frequency","level":2,"score":0.35420000553131104},{"id":"https://openalex.org/C168110828","wikidata":"https://www.wikidata.org/wiki/Q1331626","display_name":"Spectral density","level":2,"score":0.2912999987602234},{"id":"https://openalex.org/C77435443","wikidata":"https://www.wikidata.org/wiki/Q8041584","display_name":"X-shaped radio galaxy","level":4,"score":0.28780001401901245},{"id":"https://openalex.org/C152822103","wikidata":"https://www.wikidata.org/wiki/Q7575207","display_name":"Spectral shape analysis","level":3,"score":0.2768000066280365},{"id":"https://openalex.org/C133969743","wikidata":"https://www.wikidata.org/wiki/Q2362353","display_name":"L band","level":2,"score":0.2567000091075897},{"id":"https://openalex.org/C125485243","wikidata":"https://www.wikidata.org/wiki/Q905186","display_name":"Electron density","level":3,"score":0.25380000472068787}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2609.20745","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2609.20745","pdf_url":"https://arxiv.org/pdf/2609.20745","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":"doi:10.48550/arxiv.2609.20745","doi":"https://doi.org/10.48550/arxiv.2609.20745","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2609.20745","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":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2609.20745","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2609.20745","pdf_url":"https://arxiv.org/pdf/2609.20745","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"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320320671","display_name":"National Research Foundation","ror":"https://ror.org/05s0g1g46"},{"id":"https://openalex.org/F4320320715","display_name":"Tata Institute of Fundamental Research","ror":"https://ror.org/03ht1xw27"},{"id":"https://openalex.org/F4320326593","display_name":"Indian Institute of Science Education and Research Bhopal","ror":"https://ror.org/02rb21j89"},{"id":"https://openalex.org/F4320327182","display_name":"Indian Institute of Science Education and Research Mohali","ror":"https://ror.org/01vztzd79"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7213608915.pdf","grobid_xml":"https://content.openalex.org/works/W7213608915.grobid-xml"},"referenced_works_count":1,"referenced_works":["https://openalex.org/W6968741827"],"related_works":["https://openalex.org/W3204725216","https://openalex.org/W6966958046","https://openalex.org/W7213449369","https://openalex.org/W4309876500","https://openalex.org/W4378230490","https://openalex.org/W4221154121","https://openalex.org/W3127772673","https://openalex.org/W2969719916","https://openalex.org/W1670078726","https://openalex.org/W3160821199"],"abstract_inverted_index":{"We":[0,30,70,87],"report":[1,41,89],"on":[2,79],"the":[3,14,33,38,55,58,72,75,80,92],"low-frequency":[4],"radio":[5,63,109],"observations":[6],"of":[7,60,74,91],"magnetar":[8,39,56],"PSR":[9],"J1818$-$1607":[10],"carried":[11],"out":[12],"with":[13,37,66],"upgraded":[15],"Giant":[16],"Metrewave":[17],"Radio":[18],"Telescope":[19],"at":[20],"band":[21,26],"3":[22],"(300$-$500":[23],"MHz)":[24],"and":[25,40,46],"4":[27],"(550-750":[28],"MHz).":[29],"have":[31],"identified":[32],"continuum":[34,93],"source":[35,94],"associated":[36,103],"variations":[42],"in":[43],"flux":[44,51],"density":[45,52],"its":[47],"spectral":[48,68,76],"index.":[49],"The":[50],"timeseries":[53],"for":[54,84,101],"reveals":[57],"presence":[59],"two":[61],"potential":[62,81],"flaring":[64],"episodes":[65],"varying":[67],"properties.":[69],"discuss":[71],"implications":[73],"index":[77],"changes":[78],"emission":[82,105],"mechanisms":[83],"radio-loud":[85],"magnetars.":[86],"also":[88],"non-detections":[90],"as":[95,97],"well":[96],"no":[98],"direct":[99],"indication":[100],"an":[102],"diffuse":[104],"from":[106],"multiple":[107],"archival":[108],"imaging":[110],"surveys.":[111]},"counts_by_year":[],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-09-19T00:00:00"}