论文标题
用Sparc银河旋转曲线数据测试Bose-Einstein凝结暗物质模型数据
Testing Bose-Einstein Condensate dark matter models with the SPARC galactic rotation curves data
论文作者
论文摘要
宇宙的基本组成部分之一，暗物质的性质仍然未知。一种有趣的可能性是，暗物质可以以自我互动的玻色网凝结物（BEC）的形式存在。暗物质在该模型中的基本特性仅由两个参数确定，即粒子的质量和散射长度。在本研究中，我们通过使用来自最近发表的Spitzer Photomery \＆精确旋转曲线（SPARC）数据的173个星系（SPARC）数据，研究了BEC暗物质模型中银河旋转曲线的性质。我们使用遗传算法符合缓慢旋转的BEC模型中旋转曲线的理论预测。我们提供了一组旋转曲线的图形，并获得了BEC暗物质光晕（中央密度，角速度和静态半径）的相关天体物理参数的估计。还获得了暗物质分布的密度曲线。事实证明，BEC模型很好地描述了SPARC数据。冷凝水暗物质的存在也可以为核心/尖端问题提供解决方案。
The nature of one of the fundamental components of the Universe, the dark matter, is still unknown. One interesting possibility is that dark matter could exist in the form of a self-interacting Bose-Einstein Condensate (BEC). The fundamental properties of the dark matter in this model are determined by two parameters only, the mass and the scattering length of the particle. In the present study we investigate the properties of the galactic rotation curves in the BEC dark matter model, with quadratic self-interaction, by using 173 galaxies from the recently published Spitzer Photomery \& Accurate Rotation Curves (SPARC) data. We fit the theoretical predictions of the rotation curves in the slowly rotating BEC models with the SPARC data by using genetic algorithms. We provide an extensive set of figures of the rotation curves, and we obtain estimates of the relevant astrophysical parameters of the BEC dark matter halos (central density, angular velocity and static radius). The density profiles of the dark matter distribution are also obtained. It turns out that the BEC model gives a good description of the SPARC data. The presence of the condensate dark matter could also provide a solution for the core/cusp problem.
