暗物质对中子星性质的影响

Michael Vikiaris
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摘要

尽管我们尽了一切努力,暗物质的本质仍然难以捉摸。我们无法直接观察到宇宙中缺失的物质,但我们可以看到它的引力效应。星系和星系团最有可能包含被引力场困住的暗物质。这使我们得出一个自然的结论:致密天体也可能含有暗物质。中子星是天然的实验室,我们可以在这里检验我们的理论并接收重要的观测数据。因此,人们建立了许多暗物质模型来验证这些恒星中暗物质的存在。由于我们确定中子星的参数(半径,质量,Λ等)的变化,通过将暗物质插入我们的方程,我们可以看到我们在上述参数中获得的差异。在这项研究中,我们选择了暗物质晕模型,在这个模型中,中子星的引力场能够捕获暗物质,但后者的扩张远远超出了恒星的半径,在中子星周围形成了一个暗晕。通过研究恒星的各种参数,我们可以获得关于暗物质整体结构和本质的关键信息。
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The Effects of Dark Matter upon Neutron Stars’ Properties
The nature of Dark Matter remains elusive despite all of our efforts. This missing matter of the universe cannot be directly observed, but we can see its gravitational effects. Galaxies and Clusters of Galaxies are most likely to contain Dark Matter that is trapped to their Gravitational Field. This leads us to the natural conclusion that Compact Objects might contain Dark Matter too. Neutron Stars are the natural laboratories that we can test our theories and receive crucial observational data. Thus, many models of Dark Matter have been produced to check the existence of Dark Matter in those stars. Since we know for sure the varying parameters of Neutron Stars (Radii, Mass, Λ etc.), by inserting Dark Matter to our equations we can see the differences we obtain in the aforementioned parameters. In this study, we chose to work with the Dark Matter Halo model, where a Neutron Star’s gravitational field is able to trap Dark Matter, but the latter expands way beyond the star’s radius, creating a Dark Halo around the Neutron Star. By studying the various parameters of the Star, we can obtain crucial information about the whole structure and the nature of Dark Matter. 
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