FRB Dispersion Measure Distributions and Cosmological Applications

To fully exploit the cosmological potential of FRBs, it is necessary to

accurately characterize the statistical distribution of their dispersion

measures. In this talk, I will introduce our improvements to existing

distribution functions for the intergalactic-medium dispersion measure,

and present constraints on the Hubble constant derived from FRB observations.

We further find that the dispersion measure of the Milky Way halo exhibits

significant sky anisotropy. Based on this result, we construct an FRB

cosmological analysis method that does not require assuming a Galactic

dispersion-measure model, thereby improving the robustness of cosmological

constraints from FRBs.

吴普训，湖南师范大学教授，博士生导师。主要从事引力理论与宇宙学方面的研究。在美国天体物理杂志快报、美国物理评论D等国际刊物发表论文100余篇，引用四千多次。

主持了多项国家自然科学基金项目和湖南省创新研究群体项目。