论文标题
星系雕塑家的局部暗能量
Local dark energy in the Sculptor Filament of galaxies
论文作者
论文摘要
在距本地组小于10 MPC的距离上观察到的数十个不同的质量星系在称为雕塑丝的细长结构中组织。我们使用有关局部星系的哈勃太空望远镜数据来研究细丝的动力结构和进化趋势。在灯丝嵌入通用的暗能能背景中的假设下，构建了一个复制其观察到的运动学的N体计算机模型。在模型中，细丝构件的运动由它们的相互重力吸引力和局部暗能量产生的反严重排斥力。发现深色能量排斥占主导地位的丝的外部部位的力场。因此，灯丝扩大，其扩张会随着加速而进行。黑暗能量统治会随宇宙时间的增加而增加，并引入线性速度 - 距离之间的关系与通用时间率（“ Hubble常数”）仅依赖于黑暗能量密度。
Two dozens of different mass galaxies observed at distances less than 10 Mpc from the Local Group are organized in the elongated structure known as the Sculptor Filament. We use recent Hubble Space Telescope data on local galaxies to study the dynamical structure and evolutionary trends of the filament. An N-body computer model, which reproduces its observed kinematics, is constructed under the assumption that the filament is embedded in the universal dark energy background. In the model, the motions of the filament members are controlled by their mutual gravity attraction force and the anti-gravity repulsion force produced by the local dark energy. It is found that the dark energy repulsion dominates the force field of the outer parts of the filament. Because of this, the filament expands and its expansion proceeds with acceleration. The dark energy domination increases with cosmic time and introduces to the filament the linear velocity--distance relation with the universal time-rate ("the Hubble constant") that depends asymptotically on the dark energy density only.
