H3(+) spectroscopy and the ionization rate of molecular hydrogen in the central few parsecs of the galaxy.
H3(+) spectroscopy and the ionization rate of molecular hydrogen in the central few parsecs of the galaxy.
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DOI：
10.1021/jp400017s
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发表时间：
2013-05
期刊：
影响因子：
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通讯作者：
M. Goto;N. Indriolo;T. Geballe;T. Usuda
中科院分区：
文献类型：
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作者：
M. Goto;N. Indriolo;T. Geballe;T. Usuda
我们报告的观测和分析的红外光谱的H3（+）和CO线在银河系中心，在几个秒差距的中央黑洞，Sgr A*。我们发现宇宙射线电离率通常比银河系中心外高一个数量级。尽管如此，从最近在Sgr A* 附近发现的TeV γ射线源推断，升高的宇宙射线电离率比质子能谱短4个数量级。
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 γ-ray source in the vicinity of Sgr A*.