The evolution of Cataclysmic Variables and their contribution to the Galactic Ridge X-ray Emission

大变星（cv）是x射线天空中数量最多的致密双星。然而，它们的空间密度和光度函数，因此它们对银河系高能总能量输出的贡献实际上是未知的。这种情况将从根本上改变与eROSITA。由于所有类型的CVs都是x射线发射器，因此将首次构建大体积有限的样品。在此基础上，我们将测试当前预测大量低亮度天体的种群综合模型。我们将量化磁对CV演化的影响。白矮星吸积体对银河脊x射线发射的分辨相位的贡献将被确定。

Cataclysmic variables (CVs) are the most numerous compact binaries in the X-ray sky. Yet their space density and luminosity function, hence their contribution to the total energy output of the Milky Way at high energies is virtually unknown. This situation will be fundamentally changed with eROSITA. Since all types of CVs are X-ray emitters, large volume-limited samples will be constructed for the first time. Based on these we will test current population synthesis models which predict abundant low-luminosity objects. We will quantify the incidence of magnetism on CV evolution. The contribution of white-dwarf accretors to the resolved phase of the Galactic Ridge X-ray Emission shall be determined.