H3+ Spectroscopy and the Ionization Rate of Molecular Hydrogen in the Central Few Parsecs of the Galaxy

被引：27

作者：

Goto, Miwa ^{[1
]}

Indriolo, Nick ^{[2
]}

Geballe, T. R. ^{[3
]}

Usuda, T. ^{[4
]}

机构：

[1] Univ Sternwarte Munchen, D-81679 Munich, Germany

[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[3] Gemini Observ, Hilo, HI 96720 USA

[4] Natl Inst Nat Sci, Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2013年 / 117卷 / 39期

关键词：

COSMIC-RAY IONIZATION; MASSIVE BLACK-HOLE; DIFFUSE INTERSTELLAR CLOUDS; ABSORPTION-LINE SURVEY; GALACTIC-CENTER; X-RAY; CROSS-SECTIONS; IONIZED-GAS; HIGH-ENERGY; GAMMA-RAYS;

D O I：

10.1021/jp400017s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report observations and analysis of infrared spectra of H-3(+) 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*.

引用

页码：9919 / 9930

页数：12

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