标题： 比较中等质量比吸积盘和暗物质尖峰 显示英文标题

标题： Comparing Accretion Disks and Dark Matter Spikes in Intermediate Mass Ratio Inspirals

摘要： 中等质量比旋入（IMRIs）将能够通过空间引力波探测器如激光干涉空间天线（LISA）进行观测。 为此，必须对这类系统中的环境效应进行建模和理解。 这些效应可能包括（重子）吸积盘和暗物质（DM）高密度区，即所谓的尖峰。 首次，我们对同时存在吸积盘和暗物质尖峰的IMRI系统进行建模，并比较它们对旋入过程和发出的引力波信号的影响。 我们研究了偏心率的演化，采用了制动指数并推导出去相位指数，结果表明它们是互补的观测特征。 它们使我们能够区分IMRI系统中吸积盘和暗物质尖峰的影响。 显示英文摘要

摘要： Intermediate Mass Ratio Inspirals (IMRIs) will be observable with space-based gravitational wave detectors such as the Laser Interferometer Space Antenna (LISA). To this end, the environmental effects in such systems have to be modeled and understood. These effects can include (baryonic) accretion disks and dark matter (DM) overdensities, so called spikes. For the first time, we model an IMRI system with both an accretion disk and a DM spike present and compare their effects on the inspiral and the emitted gravitational wave signal. We study the eccentricity evolution, employ the braking index and derive the dephasing index, which turn out to be complementary observational signatures. They allow us to disentangle the accretion disk and DM spike effects in the IMRI system.