{"id":"https://openalex.org/W7204075377","doi":"https://doi.org/10.48550/arxiv.2608.21293","title":"The Random Magnetic Field of the Milky Way","display_name":"The Random Magnetic Field of the Milky Way","publication_year":2026,"publication_date":"2026-08-21","ids":{"openalex":"https://openalex.org/W7204075377","doi":"https://doi.org/10.48550/arxiv.2608.21293"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2608.21293","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2608.21293","pdf_url":"https://arxiv.org/pdf/2608.21293","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"volume":null,"type":"preprint","indexed_in":["arxiv","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2608.21293","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100695590","display_name":"M. Unger","orcid":"https://orcid.org/0000-0002-7651-0272","observed_orcids":["https://orcid.org/0000-0002-7651-0272"]},"institutions":[{"id":"https://openalex.org/I102335020","display_name":"Karlsruhe Institute of Technology","ror":"https://ror.org/04t3en479","country_code":"DE","type":"education","lineage":["https://openalex.org/I102335020","https://openalex.org/I1305996414"]},{"id":"https://openalex.org/I204778367","display_name":"Norwegian University of Science and Technology","ror":"https://ror.org/05xg72x27","country_code":"NO","type":"education","lineage":["https://openalex.org/I204778367"]}],"countries":["DE","NO"],"is_corresponding":false,"raw_author_name":"Unger, Michael","raw_affiliation_strings":["Institut f\u00fcr Astroteilchenphysik , Karlsruher Institut f\u00fcr Technologie , Karlsruhe 76344 , Germany","Institutt for fysikk , Norwegian University of Science and Technology (NTNU) , Trondheim , Norway"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institut f\u00fcr Astroteilchenphysik , Karlsruher Institut f\u00fcr Technologie , Karlsruhe 76344 , Germany","institution_ids":["https://openalex.org/I102335020"]},{"raw_affiliation_string":"Institutt for fysikk , Norwegian University of Science and Technology (NTNU) , Trondheim , Norway","institution_ids":["https://openalex.org/I204778367"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5048730239","display_name":"Glennys R. Farrar","orcid":"https://orcid.org/0000-0003-2417-5975","observed_orcids":["https://orcid.org/0000-0003-2417-5975","https://orcid.org/0000-0001-7239-0288"]},"institutions":[{"id":"https://openalex.org/I57206974","display_name":"New York University","ror":"https://ror.org/0190ak572","country_code":"US","type":"education","lineage":["https://openalex.org/I57206974"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Farrar, Glennys R.","raw_affiliation_strings":["Center for Cosmology and Particle Physics , Department of Physics , New York University , New York , NY 10003 , USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Cosmology and Particle Physics , Department of Physics , New York University , New York , NY 10003 , USA","institution_ids":["https://openalex.org/I57206974"]}]}],"institutions":[],"countries_distinct_count":3,"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/T10818","display_name":"Astrophysics and Cosmic Phenomena","score":0.9672999978065491,"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"}},"topics":[{"id":"https://openalex.org/T10818","display_name":"Astrophysics and Cosmic Phenomena","score":0.9672999978065491,"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/T10477","display_name":"Astrophysics and Star Formation Studies","score":0.005799999926239252,"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/T10251","display_name":"Solar and Space Plasma Dynamics","score":0.0034000000450760126,"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/galactic-magnetic-field","display_name":"galactic magnetic fields","score":0.859000027179718},{"id":"https://openalex.org/keywords/random-magnetic-field","display_name":"random magnetic field","score":0.9380000233650208},{"id":"https://openalex.org/keywords/synchrotron-polarization","display_name":"synchrotron polarization","score":0.7720000147819519},{"id":"https://openalex.org/keywords/milky-way","display_name":"Milky Way","score":0.8090000152587891},{"id":"https://openalex.org/keywords/ultra-high-energy-cosmic-rays","display_name":"ultra-high-energy cosmic rays","score":0.875},{"id":"https://openalex.org/keywords/cosmic-ray-electrons","display_name":"cosmic ray electrons","score":0.6759999990463257},{"id":"https://openalex.org/keywords/spiral-magnetic-field","display_name":"spiral magnetic field","score":0.41999998688697815}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.8741000294685364},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.6549999713897705},{"id":"https://openalex.org/C555520305","wikidata":"https://www.wikidata.org/wiki/Q321","display_name":"Milky Way","level":3,"score":0.6463000178337097},{"id":"https://openalex.org/C115260700","wikidata":"https://www.wikidata.org/wiki/Q11408","display_name":"Magnetic field","level":2,"score":0.6057000160217285},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.534600019454956},{"id":"https://openalex.org/C73329638","wikidata":"https://www.wikidata.org/wiki/Q527","display_name":"Sky","level":2,"score":0.5246000289916992},{"id":"https://openalex.org/C184050105","wikidata":"https://www.wikidata.org/wiki/Q273163","display_name":"Isotropy","level":2,"score":0.4837999939918518},{"id":"https://openalex.org/C63585750","wikidata":"https://www.wikidata.org/wiki/Q2488","display_name":"Spiral galaxy","level":3,"score":0.42989999055862427},{"id":"https://openalex.org/C9652623","wikidata":"https://www.wikidata.org/wiki/Q190109","display_name":"Field (mathematics)","level":2,"score":0.4117000102996826},{"id":"https://openalex.org/C21368211","wikidata":"https://www.wikidata.org/wiki/Q689863","display_name":"Synchrotron","level":2,"score":0.4117000102996826},{"id":"https://openalex.org/C16332341","wikidata":"https://www.wikidata.org/wiki/Q212871","display_name":"Synchrotron radiation","level":2,"score":0.4065000116825104},{"id":"https://openalex.org/C166126730","wikidata":"https://www.wikidata.org/wiki/Q725309","display_name":"Planck","level":2,"score":0.3961000144481659},{"id":"https://openalex.org/C149298590","wikidata":"https://www.wikidata.org/wiki/Q219708","display_name":"Magnetic monopole","level":2,"score":0.3903000056743622},{"id":"https://openalex.org/C111309251","wikidata":"https://www.wikidata.org/wiki/Q11547","display_name":"Cosmic ray","level":2,"score":0.38440001010894775},{"id":"https://openalex.org/C173523689","wikidata":"https://www.wikidata.org/wiki/Q215589","display_name":"Dipole","level":2,"score":0.37779998779296875},{"id":"https://openalex.org/C130402806","wikidata":"https://www.wikidata.org/wiki/Q5361768","display_name":"Random field","level":2,"score":0.3580999970436096},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.3467000126838684},{"id":"https://openalex.org/C205049153","wikidata":"https://www.wikidata.org/wiki/Q2698605","display_name":"Polarization (electrochemistry)","level":2,"score":0.3443000018596649},{"id":"https://openalex.org/C30475298","wikidata":"https://www.wikidata.org/wiki/Q909554","display_name":"Computational physics","level":1,"score":0.3294999897480011},{"id":"https://openalex.org/C174128100","wikidata":"https://www.wikidata.org/wiki/Q846907","display_name":"Spiral (railway)","level":2,"score":0.3140999972820282},{"id":"https://openalex.org/C169852918","wikidata":"https://www.wikidata.org/wiki/Q390314","display_name":"Magnetic dipole","level":3,"score":0.29980000853538513},{"id":"https://openalex.org/C59375849","wikidata":"https://www.wikidata.org/wiki/Q5013513","display_name":"COSMIC cancer database","level":2,"score":0.29490000009536743},{"id":"https://openalex.org/C207297109","wikidata":"https://www.wikidata.org/wiki/Q15605","display_name":"Cosmic microwave background","level":3,"score":0.28049999475479126},{"id":"https://openalex.org/C187309904","wikidata":"https://www.wikidata.org/wiki/Q1365197","display_name":"Field strength","level":3,"score":0.2754000127315521},{"id":"https://openalex.org/C2777581452","wikidata":"https://www.wikidata.org/wiki/Q4363928","display_name":"Pitch angle","level":2,"score":0.2648000121116638},{"id":"https://openalex.org/C62796785","wikidata":"https://www.wikidata.org/wiki/Q12902765","display_name":"Cosmic background radiation","level":4,"score":0.2621000111103058},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.25859999656677246},{"id":"https://openalex.org/C133848361","wikidata":"https://www.wikidata.org/wiki/Q4764027","display_name":"Angular resolution (graph drawing)","level":2,"score":0.25209999084472656},{"id":"https://openalex.org/C188841122","wikidata":"https://www.wikidata.org/wiki/Q1976304","display_name":"Dipole model of the Earth's magnetic field","level":5,"score":0.2517000138759613}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2608.21293","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2608.21293","pdf_url":"https://arxiv.org/pdf/2608.21293","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2608.21293","doi":"https://doi.org/10.48550/arxiv.2608.21293","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2608.21293","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2608.21293","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2608.21293","pdf_url":"https://arxiv.org/pdf/2608.21293","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G6674011095","display_name":"WoU-MMA: Constraining and Understanding Extreme Astrophysics, Cosmic Magnetism and Dark Matter","funder_award_id":"2413153","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7204075377.pdf","grobid_xml":"https://content.openalex.org/works/W7204075377.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2129686283","https://openalex.org/W2964251324","https://openalex.org/W2280659151","https://openalex.org/W2029045119","https://openalex.org/W4415145336","https://openalex.org/W2032937327","https://openalex.org/W2056793151","https://openalex.org/W1994033105","https://openalex.org/W7202176710","https://openalex.org/W7097971032"],"abstract_inverted_index":{"We":[0,179],"constrain":[1],"the":[2,8,13,17,26,29,33,48,51,70,80,86,101,139,143,146,181,184,189,200],"large-scale":[3,156],"isotropic":[4,40],"random":[5,186],"component":[6,104],"of":[7,16,32,47,53,69,79,115,124,171,183,192,211],"Galactic":[9],"magnetic":[10,81],"field":[11,35,95,187],"using":[12],"Planck":[14],"reconstruction":[15],"408":[18],"MHz":[19],"synchrotron":[20,30],"sky.":[21],"Our":[22],"analysis":[23,49],"simultaneously":[24],"fits":[25,165],"random-field":[27,103,162],"structure,":[28],"contributions":[31],"coherent":[34],"and":[36,39,41,94,119,213],"local":[37,62,112],"foregrounds,":[38,63],"dipolar":[42],"offsets.":[43],"A":[44],"new":[45],"element":[46],"is":[50,105,204],"use":[52],"excess":[54],"polarized":[55],"emission":[56],"at":[57],"30":[58],"GHz":[59],"to":[60,66,145,208,216],"model":[61],"allowing":[64],"us":[65],"retain":[67],"97%":[68],"sky":[71,92],"without":[72],"absorbing":[73],"these":[74],"structures":[75],"into":[76],"Galaxy-wide":[77],"features":[78],"field.":[82],"Across":[83],"variations":[84],"in":[85,131,138,218],"coherent-field":[87],"model,":[88],"cosmic-ray":[89],"electron":[90],"distribution,":[91],"mask,":[93],"profile,":[96],"we":[97,149,177],"consistently":[98],"find":[99,150],"that":[100],"dominant":[102],"a":[106,111,120,155,160,209],"vertically":[107],"compact":[108],"disk":[109],"with":[110,197],"rms":[113],"strength":[114],"about":[116],"4":[117],"$\u03bc$G":[118],"1/e":[121],"scale":[122],"height":[123],"approximately":[125],"1":[126],"kpc,":[127],"substantially":[128],"thinner":[129],"than":[130],"most":[132],"previous":[133,198],"models.":[134],"An":[135],"annular":[136],"enhancement":[137],"inner":[140],"Galaxy":[141],"improves":[142],"fit":[144],"data,":[147],"whereas":[148],"no":[151],"evidence":[152],"for":[153,188],"either":[154],"spiral":[157],"pattern":[158],"or":[159],"thick":[161],"disk.":[163],"The":[164],"also":[166],"yield":[167],"an":[168],"intensity":[169],"monopole":[170],"4-7":[172],"K,":[173],"whose":[174],"possible":[175],"origin":[176],"discuss.":[178],"quantify":[180],"implications":[182],"inferred":[185],"angular":[190],"smearing":[191,202],"ultrahigh-energy":[193],"cosmic":[194],"rays.":[195],"Compared":[196],"models,":[199],"sky-median":[201],"angle":[203],"smaller":[205],"by":[206,214],"up":[207,215],"factor":[210],"1.7,":[212],"2.4":[217],"individual":[219],"directions.":[220]},"counts_by_year":[],"updated_date":"2026-11-05T12:25:35.769452","created_date":"2026-08-25T00:00:00"}
