中文摘要：

快收音机爆炸显示出大分散措施，比星群的分散措施前景大得多。因此，他们显然有银河系外的起源。我们从主人星系调查可能的贡献到分散措施。我们模仿快收音机爆炸的空间分发并且由为热电子密度分布使用放大 NE2001 模型从快收音机爆炸沿着 sightlines 计算分散措施到主人星系的边。我们发现对从主人星系的快收音机爆炸的分散措施的贡献跟随斜 Gaussian 分布。当倾斜角度是超过 70 慥獲时，在分散的半最大值的山峰和宽度与一个螺线星系的倾斜角度测量分发增加，到大价值吗？

英文摘要：

Fast radio bursts show large dispersion measures, much larger than the Galactic dispersion measure foreground. Therefore, they evidently have an extragalac- tic origin. We investigate possible contributions to the dispersion measure from host galaxies. We simulate the spatial distribution of fast radio bursts and calculate the dis- persion measures along the sightlines from fast radio bursts to the edge of host galaxies by using the scaled NE2001 model for thermal electron density distributions. We find that contributions to the dispersion measure of fast radio bursts from the host galaxy follow a skew Gaussian distribution. The peak and the width at half maximum of the dispersion measure distribution increase with the inclination angle of a spiral galaxy, to large values when the inclination angle is over 70~. The largest dispersion measure produced by an edge-on spiral galaxy can reach a few thousand pc cm-3, while the dispersion measures from dwarf galaxies and elliptical galaxies have a maximum of only a few tens of pc cm-3. Notice, however, that additional dispersion measures of tens to hundreds of pc cm-3 can be produced by high density clumps in host galaxies. Simulations that include dispersion measure contributions from the Large Magellanic Cloud and the Andromeda Galaxy are shown as examples to demonstrate how to ex- tract the dispersion measure from the intergalactic medium.