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arXiv 1404.0299gr-qc
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暗物质的f(R)模型:旋转曲线和引力透镜

An f(R) model for dark matter: rotation curves and gravitational lensing

F. Shojai, A. Shojai

摘要:

描述星系和星系团的平坦自转曲线应该有两种方法。我们可以在填充晕的物质中引入一个暗物质成分,或者通过修改引力理论,给平坦的旋转曲线一个几何性质。在这里,我们采用适合于描述该效应的f(R)模型。将该解与外解进行匹配,得到有效密度、径向压力和切向压力。然后研究了能量条件和透镜效应。

英文摘要:

There should be two ways to describe the flat rotation curves of galaxies and cluster of galaxies. Either one can introduce a dark matter component for the matter filling the halo, or by modifying the gravity theory and give the flat rotation curve a geometrical nature. Here we adopt an f(R) model suitable for describing the effect. After matching the solution with the exterior solution, the effective density, radial and tangential pressures are obtained. Then the energy conditions and lensing effect is investigated.

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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