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arXiv 1302.2148astro-ph.COastro-ph.GA
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光子反馈:屏蔽和爱丁顿极限

Photon Feedback: Screening and the Eddington Limit

Aristotle Socrates, Lorenzo Sironi

摘要:

明亮的恒星形成星系的辐射远低于其爱丁顿极限。通量平均不透明度的值,介导的辐射力对物质的数量级小于紫外线或光学尘埃不透明度。在经验的基础上,它表明,高红移ULIRGs辐射在两个数量级低于他们的爱丁顿极限,而当地的恒星爆发M82和Arp 220辐射在百分之几的爱丁顿极限。本文考虑了一个简单的模型,用于描述富尘环境中紫外光和可见光的辐射转移。尘埃上的辐射压力不会对恒星形成星系的大尺度气体动力学产生很大影响。

英文摘要:

Bright star-forming galaxies radiate well below their Eddington Limit. The value of the flux-mean opacity that mediates the radiation force onto matter is orders of magnitude smaller than the UV or optical dust opacity. On empirical grounds, it is shown that high-redshift ULIRGs radiate at two orders of magnitude below their Eddington Limit, while the local starbursters M82 and Arp 220 radiate at a few percent of their Eddington Limit. A simple model for the radiative transfer of UV and optical light in dust-rich environments is considered. Radiation pressure on dust does not greatly affect the large-scale gas dynamics of star-forming galaxies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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