{"id":"https://openalex.org/W7096501959","doi":null,"title":"Preprint typeset using L ATEX style emulateapj v. 10/09/06 RADIO RECOMBINATION LINES TOWARD THE GALACTIC CENTER LOBE","display_name":"Preprint typeset using L ATEX style emulateapj v. 10/09/06 RADIO RECOMBINATION LINES TOWARD THE GALACTIC CENTER LOBE","publication_year":2009,"publication_date":"2009-01-01","ids":{"openalex":"https://openalex.org/W7096501959"},"language":"en","primary_location":{"id":"pmh:oai:CiteSeerX.psu:10.1.1.243.5999","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.243.5999","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/0901.1480v1.pdf","raw_type":"text"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5070168453","display_name":"Casey J. Law","orcid":"https://orcid.org/0000-0002-4119-9963","observed_orcids":["https://orcid.org/0000-0002-4119-9963"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"C. J. Law","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":null,"display_name":"D. Backer","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"D. Backer","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":null,"display_name":"F. Yusef-zadeh","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"F. Yusef-zadeh","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":null,"display_name":"R. Maddalena","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"R. Maddalena","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"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":true,"primary_topic":{"id":"https://openalex.org/T10744","display_name":"Astrophysical Phenomena and Observations","score":0.4745999872684479,"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":0.4745999872684479,"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/T10477","display_name":"Astrophysics and Star Formation Studies","score":0.24619999527931213,"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":0.14090000092983246,"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/radio-recombination-lines","display_name":"radio recombination lines","score":0.9909999966621399},{"id":"https://openalex.org/keywords/ionized-gas","display_name":"ionized gas","score":0.8420000076293945},{"id":"https://openalex.org/keywords/electron-temperature","display_name":"electron temperature","score":0.8190000057220459},{"id":"https://openalex.org/keywords/gas-density","display_name":"gas density","score":0.6579999923706055},{"id":"https://openalex.org/keywords/line-ratios","display_name":"line ratios","score":0.625},{"id":"https://openalex.org/keywords/local-thermodynamic-equilibrium","display_name":"local thermodynamic equilibrium","score":0.9169999957084656},{"id":"https://openalex.org/keywords/collisional-broadening","display_name":"pressure broadening","score":0.9629999995231628},{"id":"https://openalex.org/keywords/ionized-outflows","display_name":"ionized outflows","score":0.7799999713897705},{"id":"https://openalex.org/keywords/galactic-center","display_name":"Galactic Center","score":0.4749999940395355},{"id":"https://openalex.org/keywords/radio-continuum-emission","display_name":"radio continuum emission","score":0.4169999957084656}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.8463000059127808},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.7847999930381775},{"id":"https://openalex.org/C132552067","wikidata":"https://www.wikidata.org/wiki/Q649112","display_name":"Galactic Center","level":3,"score":0.6439999938011169},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.6107000112533569},{"id":"https://openalex.org/C156695909","wikidata":"https://www.wikidata.org/wiki/Q3373825","display_name":"Recombination","level":3,"score":0.6011000275611877},{"id":"https://openalex.org/C198352243","wikidata":"https://www.wikidata.org/wiki/Q37105","display_name":"Line (geometry)","level":2,"score":0.5896999835968018},{"id":"https://openalex.org/C198291218","wikidata":"https://www.wikidata.org/wiki/Q190382","display_name":"Ionization","level":3,"score":0.5618000030517578},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.5059000253677368},{"id":"https://openalex.org/C2779463800","wikidata":"https://www.wikidata.org/wiki/Q5062222","display_name":"Center (category theory)","level":2,"score":0.4474000036716461},{"id":"https://openalex.org/C20249676","wikidata":"https://www.wikidata.org/wiki/Q217012","display_name":"Radio galaxy","level":3,"score":0.396699994802475},{"id":"https://openalex.org/C2777876421","wikidata":"https://www.wikidata.org/wiki/Q1637174","display_name":"Lobe","level":2,"score":0.3919999897480011},{"id":"https://openalex.org/C125485243","wikidata":"https://www.wikidata.org/wiki/Q905186","display_name":"Electron density","level":3,"score":0.3828999996185303},{"id":"https://openalex.org/C147120987","wikidata":"https://www.wikidata.org/wiki/Q2225","display_name":"Electron","level":2,"score":0.36090001463890076},{"id":"https://openalex.org/C22175881","wikidata":"https://www.wikidata.org/wiki/Q7201785","display_name":"Electron temperature","level":3,"score":0.3474999964237213},{"id":"https://openalex.org/C82706917","wikidata":"https://www.wikidata.org/wiki/Q10251","display_name":"Plasma","level":2,"score":0.3343999981880188},{"id":"https://openalex.org/C3017524520","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Line width","level":2,"score":0.3163999915122986},{"id":"https://openalex.org/C115260700","wikidata":"https://www.wikidata.org/wiki/Q11408","display_name":"Magnetic field","level":2,"score":0.29030001163482666},{"id":"https://openalex.org/C2778042268","wikidata":"https://www.wikidata.org/wiki/Q11282","display_name":"H II region","level":4,"score":0.28360000252723694},{"id":"https://openalex.org/C43481613","wikidata":"https://www.wikidata.org/wiki/Q46587","display_name":"Active galactic nucleus","level":3,"score":0.27410000562667847},{"id":"https://openalex.org/C85867844","wikidata":"https://www.wikidata.org/wiki/Q1072904","display_name":"Fermi gas","level":3,"score":0.2736999988555908},{"id":"https://openalex.org/C150143219","wikidata":"https://www.wikidata.org/wiki/Q4306","display_name":"Radio astronomy","level":2,"score":0.2535000145435333},{"id":"https://openalex.org/C4839761","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Spectral line","level":2,"score":0.25189998745918274}],"mesh":[],"locations_count":1,"locations":[{"id":"pmh:oai:CiteSeerX.psu:10.1.1.243.5999","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.243.5999","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/0901.1480v1.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2135631990","https://openalex.org/W7096958730","https://openalex.org/W2962854515","https://openalex.org/W2764503200","https://openalex.org/W2096968007","https://openalex.org/W3047586831","https://openalex.org/W3105818375","https://openalex.org/W1974937031","https://openalex.org/W36884656","https://openalex.org/W2001118682"],"abstract_inverted_index":{"The":[0,77,123,167],"Galactic":[1,15],"Center":[2],"lobe":[3,183],"is":[4,21,184],"a":[5,85,157,198,209],"degree-tall":[6],"shell":[7,199],"seen":[8,220],"in":[9,24,119,151,186,221],"radio":[10,70,90,124],"continuum":[11,91],"images":[12],"of":[13,54,63,69,101,148,160,205,211],"the":[14,25,49,55,61,81,89,111,132,152,178,181,187,192,201,206],"center":[16],"(GC)":[17],"region.":[18,189],"If":[19,190],"it":[20],"actually":[22],"located":[23,185],"GC":[26,56,182,188],"region,":[27],"formation":[28],"models":[29],"would":[30],"require":[31],"massive":[32],"energy":[33],"input":[34],"(e.g.,":[35],"starburst":[36],"or":[37,51],"jet)":[38],"to":[39,88,106,136,196,217],"create":[40],"it.":[41],"At":[42],"present,":[43],"observations":[44,68,78,144],"have":[45],"not":[46],"strongly":[47],"constrained":[48],"location":[50],"physical":[52],"conditions":[53],"lobe.":[57],"This":[58],"paper":[59],"describes":[60],"analysis":[62],"new":[64],"and":[65,108,172],"archival":[66],"single-dish":[67],"recombination":[71,125],"lines":[72],"toward":[73],"this":[74],"enigmatic":[75],"object.":[76],"find":[79,109,146],"that":[80,94,110,180],"ionized":[82,193,218],"gas":[83,118,158,170,194],"has":[84],"morphology":[86,173],"similar":[87,216],"emission,":[92],"suggesting":[93],"they":[95],"are":[96,114,128,174],"associated.":[97],"We":[98],"study":[99],"averages":[100],"several":[102],"transitions":[103],"from":[104],"H106\u03b1":[105],"H191\u01eb":[107],"line":[112,126],"ratios":[113],"most":[115],"consistent":[116,176],"with":[117,177,208],"local":[120],"thermodynamic":[121],"equilibrium.":[122],"widths":[127],"remarkably":[129],"narrow,":[130],"constraining":[131],"typical":[133],"electron":[134,168],"temperature":[135],"be":[137],"less":[138],"than":[139],"about":[140],"4000":[141],"K.":[142],"These":[143],"also":[145],"evidence":[147],"pressure":[149],"broadening":[150],"higher":[153],"electronic":[154],"states,":[155],"implying":[156],"density":[159],"ne":[161],"=":[162],"910":[163],"+310":[164],"\u2212450":[165],"cm\u22123.":[166],"temperature,":[169],"pressure,":[171],"all":[175],"idea":[179],"so,":[191],"appears":[195],"form":[197],"surrounding":[200],"central":[202],"100":[203],"parsecs":[204],"galaxy":[207],"mass":[210],"roughly":[212],"10":[213],"5":[214],"M\u2299,":[215],"outflows":[219],"dwarf":[222],"starbursts.":[223]},"counts_by_year":[],"updated_date":"2026-10-14T16:39:01.820549","created_date":"2025-10-27T00:00:00"}
