Breaking the ${\tau }_{\mathrm{T}}-f$ degeneracy of the kinetic Sunyaev Zel'dovich cosmology in redshift space

Liang Xiao, Yi Zheng

The 'optical depth-linear growth rate' (${\tau }_{\mathrm{T}}-f$) degeneracy is a long-standing problem in the kinetic Sunyaev Zel'dovich (kSZ) cosmology. It can be spontaneously broken in re…