论文标题
双重质量wd伴侣的重力波辐射
Gravitational Wave Radiation of Double Degenerates with Extremely low-mass WD companions
论文作者
论文摘要
双重归化系统（DDS）被认为是未来空间基的重力波检测器的重力波（GW）源，例如激光干涉仪太空天线（LISA）。最近，一种具有极低质量WD的DD（ELM WD； $ \ leq 0.30 \; m_ \ odot $）伴侣在ELM调查中已大部分发现。它们的轨道时期很短，因此是丽莎检测的重要来源。此外，由于ELM WDS的厚膜与大量WDS（例如CO WDS）相比，通过电磁（EM）和GW观测值的组合可以更容易找到它们。在本文中，我们首先考虑DDS中的ELM WDS人群，并考虑ELM WD的详细进化轨道，然后分析这些系统的GW辐射。我们发现，Lisa可以完全检测到约6美元\ times10^3 $来源，包括$ \ sim2 \ times10^3 $ chirating来源，$ \ sim13 $（$ \ sim107 $）预计将被Lisa和Elm Survey（Gaia）检测到更多来源。
Double Degenerate systems (DDs) are supposed to be significant gravitational wave (GW) sources for future space-based gravitational-wave detectors, e.g., Laser Interferometer Space Antenna (LISA). Recently, one type of DDs with Extremely low-mass WD (ELM WD; $\leq 0.30\; M_\odot$) companions has been largely found in the ELM Survey. They have very short orbital periods and are therefore important sources for LISA detection. Besides, due to the thick envelope of ELM WDs compared with massive WDs (e.g. CO WDs), they are much easier to be found by the combination of electromagnetic (EM) and GW observations. In this paper, we first obtain the population of ELM WDs in DDs with considering the detailed evolutionary tracks of ELM WDs, and then analyse the GW radiation of these systems. We found that about $6\times10^3$ sources could be solely detected by LISA, including $\sim2\times10^3$ chirping sources, and $\sim13$ ($\sim107$) more sources are expected to be detected by both LISA and ELM Survey (Gaia).
