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arXiv 0906.2480astro-ph.SRastro-ph.EP
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太阳系对暗物质的捕获

Capture of dark matter by the Solar System

I. B. Khriplovich, D. L. Shepelyansky

摘要:

我们研究太阳系对银河系暗物质的捕获。这种效应是由于太阳(行星之一)和暗物质粒子之间的引力三体相互作用造成的。导出了俘获截面的解析估计,得到了俘获暗物质粒子总质量的上、下界,但密度的估计不太可靠。其中最乐观的估计是暗物质密度比我们银河系中的暗物质密度增加了大约三个数量级。然而,即使是这个乐观的值仍然低于目前最好的观测上限约两个数量级。

英文摘要:

We study the capture of galactic dark matter by the Solar System. The effect is due to the gravitational three-body interaction between the Sun, one of the planets, and a dark matter particle. The analytical estimate for the capture cross-section is derived and the upper and lower bounds for the total mass of the captured dark matter particles are found. The estimates for their density are less reliable. The most optimistic of them give an enhancement of dark matter density by about three orders of magnitudes compared to its value in our Galaxy. However, even this optimistic value remains below the best present observational upper limits by about two orders of magnitude.

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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