论文标题
用模糊/冷暗物质模型分析平面银河光环分布
Analyzing Planar Galactic Halo Distributions with Fuzzy/Cold Dark Matter Models
论文作者
论文摘要
我们在模糊暗物质模型和冷暗物质模型之间进行了数值比较，重点是在大型星系周围形成卫星星系平面。使用Gadget2进行冷暗物质和模糊暗物质的Pyultralight研究了具有受控初始subho构型的这种银河动力学。我们证明，模糊的暗物质一面的卫星星系具有形成更扁平和固定的卫星系统的趋势，而不是在寒冷的暗物质一侧，主要是由于模糊暗物质的重力冷却效果的耗散。我们使用模糊的暗物质的模拟通常显示卫星星系的少量轴比$ c/a $ $ c/a $ $ c/a $ $ c/a $ c/a $ $ c/a $ c/a $ c/a $ c/a $ c/a $ 0.21 \ sim 0.30 $;这井与银河系的当前观察值相匹配。
We perform a numerical comparison between the fuzzy dark matter model and the cold dark matter model, focusing on formation of satellite galaxy planes around massive galaxies. Such galactic dynamics with controlled initial subhalo configurations are investigated using GADGET2 for the cold dark matter and PyUltraLight for the fuzzy dark matter, respectively. We demonstrate that satellite galaxies in the fuzzy dark matter side have a tendency to form more flattened and corotating satellite systems than in the cold dark matter side mainly due to the dissipation by the gravitational cooling effect of the fuzzy dark matter. Our simulations with the fuzzy dark matter typically show the minor-to-major axis ratio $c/a$ of the satellite galaxy planes to be $0.21 \sim 0.30$; This well matches the current observed value for the Milky Way.
