Large Scale Structure Mocks

Welcome to the CITA LSS Mocks Portal. Here you will find information on the large-scale structure cosmological simulations, Peak Patch and WebSky, being developed at CITA, as well as publicly available simulation products from each CITA LSS Mocks Project.

Peak Patch and WebSky: How our simulations work

Peak Patch is a robust and highly efficient dark matter (DM) halo finder. WebSky is a sky-map maker that generates mock sky maps using a suite of response functions to Peak Patch DM halo catalogues. Follow the link in the section header to learn more about these codes. Follow the link in the section heading to read more about the simulations.

Simulation Products

The following sections link (in reverse chronological order) to the page for each of the publicly released CITA Mocks Projects. These provide information on the respective projects and link to publicly released simulation products. See the linked papers for the full details.

CMB WebSky2.0 Mocks

Data to accompany The WebSky2.0 Mocks for next-generation CMB and LSS surveys - N. J. Carlson et al. in prep.

WebSky CII Forecasts & Primordial Non-Gaussianity

Data to accompany The WebSky [CII] Forecasts and the search for primordial intermittent non-Gaussianity - N. J. Carlson, J. R. Bond, D. T. Chung, P. Horlaville and T. Morrison (2026)

Lensed CIB Mocks

Data to accompany Exploring the Non-Gaussianity of the Cosmic Infrared Background and Its Weak Gravitational Lensing - J. Lee, J. R. Bond, P. Motloch, A. van Engelen, G. Stein (2024).

WebSky Extragalactic CMB Mocks

Data to accompany The Websky Extragalactic CMB Simulations - G. Stein, M. A. Alvarez, J. R. Bond, A. v. Engelen, N. Battaglia (2020).

Patchy kSZ Maps

Data to accompany The Kinetic Sunyaev-Zel’dovich Effect from Reionization: Simulated Full-sky Maps at Arcminute Resolution - M. A. Alvarez (2016)