Authors
Jaemyoung Lee, J Richard Bond, Pavel Motloch, Alexander van Engelen, George Stein
Publication date
2024/4
Journal
Monthly Notices of the Royal Astronomical Society
Volume
529
Issue
3
Pages
2543-2558
Publisher
Oxford University Press
Description
Gravitational lensing deflects the paths of photons, altering the statistics of cosmic backgrounds and distorting their information content. We take the cosmic infrared background (CIB), which provides plentiful information about galaxy formation and evolution, as an example to probe the effect of lensing on non-Gaussian statistics. Using the Websky simulations, we first quantify the non-Gaussianity of the CIB, revealing additional detail on top of its well-measured power spectrum. To achieve this, we use needlet-like multipole-band filters to calculate the variance and higher-point correlations. Using our simulations, we show the two-, three- and four-point spectra, and compare our calculated power spectra and bispectra to Planck values. We then lens the CIB, shell-by-shell with corresponding convergence maps, to capture the broad redshift extent of both the CIB and its lensing convergence. The lensing of the CIB …
Total citations
Scholar articles
J Lee, JR Bond, P Motloch, A van Engelen, G Stein - Monthly Notices of the Royal Astronomical Society, 2024