论文标题
银河系卫星在重力波中闪闪发光
Milky Way Satellites Shining Bright in Gravitational Waves
论文作者
论文摘要
银河系卫星星系的人口对于宇宙学，基本物理学和天体物理学引起了极大的兴趣。它们代表了银河光度函数的微弱端，是本地宇宙中最暗的统治物体，并包含最古老，最贫穷的恒星种群。最近的调查显示了大约60个卫星，但这可能不到总数的一半。这些系统的表征由于其发光度低而仍然是一个挑战。我们认为重力波观测液是通过观察其短期双白色矮人种群来研究这些卫星的潜在工具。丽莎将观察整个天空，而不会因灰尘灭绝而没有选择效果，并补充了光学调查，并可能发现隐藏在银河系磁盘后面的大量卫星。
The population of Milky Way satellite galaxies is of great interest for cosmology, fundamental physics, and astrophysics. They represent the faint end of the galaxy luminosity function, are the most dark-matter dominated objects in the local Universe, and contain the oldest and most metal-poor stellar populations. Recent surveys have revealed around 60 satellites, but this could represent less than half of the total. Characterization of these systems remains a challenge due to their low luminosity. We consider the gravitational wave observatory LISA as a potential tool for studying these satellites through observations of their short-period double white dwarf populations. LISA will observe the entire sky without selection effects due to dust extinction, complementing optical surveys, and could potentially discover massive satellites hidden behind the disk of the galaxy.
