{"paper":{"title":"Herschel observations of interstellar chloronium","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aage Sandqvist (Stockholm), Arnold O. Benz (ETH Zurich), Bengt Larsson (Chalmers), Dariusz Lis (Caltech), David A. Neufeld (JHU), Evelyne Roueff (Paris-Meudon), Floris van der Tak (Groningen), Franck Le Petit (Paris-Meudon), Gary J. Melnick (CfA), Harshal Gupta (JPL), Jacques Le Bourlot (Paris-Meudon), John H. Black (Chalmers), Karl M. Menten (MPIfR), Mark G. Wolfire (UMd), Maryvonne Gerin (LERMA), Massimo De Luca (LERMA), Nick Indriolo (JHU), Paule Sonnentrucker (STScI), Paul F. Goldsmith (JPL), Raquel Monje (Caltech), Ronald L. Snell (UMass), Simon Bruderer (MPIfETP), Thomas G. Phillips (Caltech), Zsofia Nagy (Groningen)","submitted_at":"2012-01-13T21:00:00Z","abstract_excerpt":"Using the Herschel Space Observatory's Heterodyne Instrument for the Far-Infrared (HIFI), we have observed para-chloronium (H2Cl+) toward six sources in the Galaxy. We detected interstellar chloronium absorption in foreground molecular clouds along the sight-lines to the bright submillimeter continuum sources Sgr A (+50 km/s cloud) and W31C. Both the para-H2-35Cl+ and para-H2-37Cl+ isotopologues were detected, through observations of their 1(11)-0(00) transitions at rest frequencies of 485.42 and 484.23 GHz, respectively. For an assumed ortho-to-para ratio of 3, the observed optical depths imp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.2941","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}