论文标题
银河系的旋转曲线和暗物质密度
Rotation Curve of the Milky Way and the Dark Matter Density
论文作者
论文摘要
我们回顾了〜银河的旋转曲线研究(RC)的当前状态,并呈现〜统一的RC,从〜银河中心到中心距离为100 kpc的半河流距离。 〜RC用于直接计算〜表面质量密度(SMD)的分布。然后,我们提出了一种使用〜SMD分布以〜银色的方式得出暗物质(DM)密度分布的方法。 〜最佳拟合深色光环曲线产生的本地DM密度为$ρ_\ odot = 0.36 \ pm 0.02 $ gev/cc。我们还审查了〜在〜〜〜〜〜〜〜pm pm = 0.39 \ pm 0.09 $ gev/cc的〜〜值的估计。
We review the~current status of the~study of rotation curve (RC) of the~Milky Way, and~present a~unified RC from the~Galactic Center to the galacto-centric distance of about 100 kpc. The~RC is used to directly calculate the~distribution of the~surface mass density (SMD). We then propose a~method to derive the~distribution of dark matter (DM) density in the~in the~Milky Way using the~SMD distribution. The~best-fit dark halo profile yielded a local DM density of $ρ_\odot = 0.36\pm 0.02$ GeV/cc. We also review the~estimations of the~local DM density in the~last decade, and~show that the~value is converging to a~value at $ρ_\odot=0.39\pm 0.09$ GeV/cc.