File:Slice lensing vFeb2024.png

Summary

CIB intensity, the corresponding lensing potential kernels, as well as the RMS deflection for each redshift shell ($\Delta z = 0.2$) within our Websky CIB model. The CIB intensity increases from $z = 0$ to $z = 1.4$, peaks around $z = 1.4$ to $1.6$, then decreases until it is almost non-existent by $z = 4$. The lensing kernels, defined as $W_{z_i^{\text{src}}}^{\kappa} = \frac{3}{2} \Omega_m H_0 ^2 \frac{1+z}{H(z)}\chi(z) \big[ \frac{\chi(z_i^{\text{src}})-\chi(z)}{\chi(z_i^{\text{src}})}\big]$ with $z_i^{\text{src}}$ being the midpoint of each redshift shell in $z$-space, typically peak around half of its extent, although they display some skew towards where the CIB intensity is highest, especially as we integrate over more redshifts. The RMS deflection steeply increases at first from $0.34\arcmin$ for the first lensed shell, up to $1.7\arcmin$ for the last shell.