{ "id": "1305.3915", "version": "v1", "published": "2013-05-16T20:00:01.000Z", "updated": "2013-05-16T20:00:01.000Z", "title": "H3+ Spectroscopy and the Ionization Rate of Molecular Hydrogen in the Central Few Parsecs of the Galaxy", "authors": [ "M. Goto", "Nick Indriolo", "T. R. Geballe", "T. Usuda" ], "comment": "18 pages, 12 figures, Accepted for publication at the Journal of Physical Chemistry A \"Oka Festschrift: Celebrating 45 Years of Astrochemistry\"", "categories": [ "astro-ph.GA" ], "abstract": "We report observations and analysis of infrared spectra of H3+ and CO lines in the Galactic center, within a few parsecs of the central black hole, Sgr A*. We find a cosmic ray ionization rate typically an order of magnitude higher than outside the Galactic center. Notwithstanding, the elevated cosmic ray ionization rate is 4 orders of magnitude too short to match the proton energy spectrum as inferred from the recent discovery of the TeV gamma-ray source in the vicinity of Sgr A*.", "revisions": [ { "version": "v1", "updated": "2013-05-16T20:00:01.000Z" } ], "analyses": { "keywords": [ "molecular hydrogen", "spectroscopy", "elevated cosmic ray ionization rate", "galactic center", "central black hole" ], "tags": [ "journal article" ], "publication": { "doi": "10.1021/jp400017s", "journal": "Journal of Physical Chemistry A", "year": 2013, "month": "Oct", "volume": 117, "number": 39, "pages": 9919 }, "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1233824, "adsabs": "2013JPCA..117.9919G" } } }