DOI: 10.1093/mnras/stad2563 ISSN:

Synthetic light cone catalogues of modern redshift and weak lensing surveys with AbacusSummit

Boryana Hadzhiyska, S Yuan, C Blake, D J Eisenstein, J Aguilar, S Ahlen, D Brooks, T Claybaugh, A de la Macorra, P Doel, N Emas, J E Forero-Romero, C Garcia-Quintero, M Ishak, S Joudaki, E Jullo, R Kehoe, T Kisner, A Kremin, A Krolewski, M Landriau, J U Lange, M Manera, R Miquel, Jundan Nie, C Poppett, A Porredon, G Rossi, R Ruggeri, C Saulder, M Schubnell, G Tarlé, B A Weaver, E Xhakaj, Zhimin Zhou
  • Space and Planetary Science
  • Astronomy and Astrophysics


The joint analysis of different cosmological probes, such as galaxy clustering and weak lensing, can potentially yield invaluable insights into the nature of the primordial Universe, dark energy and dark matter. However, the development of high-fidelity theoretical models is a necessary stepping-stone. Here, we present public high-resolution weak lensing maps on the light cone, generated using the N-body simulation suite AbacusSummit, and accompanying weak lensing mock catalogues, tuned to the Early Data Release small-scale clustering measurements of the Dark Energy Spectroscopic Instrument (DESI). Available in this release are maps of the cosmic shear, deflection angle and convergence fields at source redshifts ranging from z = 0.15 to 2.45 as well as CMB convergence maps for each of the 25 base-resolution simulations (Lbox = 2000 h−1 Mpc, Npart = 69123) as well as for the two huge simulations (Lbox = 7500 h−1 Mpc, Npart = 86403) at the fiducial AbacusSummit cosmology. The pixel resolution of each map is 0.21 arcmin, corresponding to a HEALPix Nside of 16384. The sky coverage of the base simulations is an octant until z ≈ 0.8 (decreasing to about 1800 deg2 at z ≈ 2.4), whereas the huge simulations offer full-sky coverage until z ≈ 2.2. Mock lensing source catalogues are sampled matching the ensemble properties of the Kilo-Degree Survey (KiDS), Dark Energy Survey (DES), and Hyper Suprime-Cam (HSC) datasets. The mock catalogues are validated against theoretical predictions for various clustering and lensing statistics such as correlation multipoles, galaxy-shear and shear-shear, showing excellent agreement. All products can be downloaded via a Globus endpoint (see Data Availability).

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