Cosmic Rays in Star-Forming Environments - Proceedings of the Second Session of the Sant Cugat Forum on Astrophysics

Cosmic Rays in Star-Forming Environments - Proceedings of the Second Session of the Sant Cugat Forum on Astrophysics
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恒星形成环境中的宇宙射线 - 圣库加特天体物理学论坛第二届会议论文集

DOI:
10.1007/978-3-642-35410-6_3
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发表时间:
2013
期刊:
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通讯作者:
Aladro R
Aladro R
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文献类型:
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作者:
Aladro R

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我们调查了塞弗特星系NGC 1068的周核盘之间的频率86.2和115.6千兆赫,并确定了17种不同的分子。使用依赖于时间和深度的化学模型,我们再现了观测结果,并表明,柱密度的大多数物种更好地再现,如果冷气体是由高宇宙射线电离率约1,000倍的银河系的高度弥漫。我们讨论了如何在NGC 1068核分子可能会受到这种外部辐射,以及紫外线辐射场的影响。
We surveyed the circumnuclear disk of the Seyfert galaxy NGC 1068 between the frequencies 86.2 and 115.6 GHz, and identified 17 different molecules. Using a time and depth dependent chemical model we reproduced the observational results, and show that the column densities of most of the species are better reproduced if the cold gas is heavily pervaded by a high cosmic ray ionization rate of about 1,000 times that of the Milky Way. We discuss how molecules in the NGC 1068 nucleus may be influenced by this external radiation, as well as by UV radiation fields.