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Euclid preparation. XXIX. Forecasts for ten different higher-order weak lensing statistics

Euclid Collaboration V. Ajani M. Baldi A. Barthelemy A. Boyle P. Burger +495 lainnya
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Recent cosmic shear studies have shown that higher-order statistics (HOS) developed by independent teams now outperform standard two-point estimators in terms of statistical precision thanks to their sensitivity to the non-Gaussian features of large-scale structure. The aim of the Higher-Order Weak Lensing Statistics (HOWLS) project is to assess, compare, and combine the constraining power of ten different HOS on a common set of $Euclid$-like mocks, derived from N-body simulations. In this first paper of the HOWLS series, we computed the nontomographic ($\Omega_{\rm m}$, $\sigma_8$) Fisher information for the one-point probability distribution function, peak counts, Minkowski functionals, Betti numbers, persistent homology Betti numbers and heatmap, and scattering transform coefficients, and we compare them to the shear and convergence two-point correlation functions in the absence of any systematic bias. We also include forecasts for three implementations of higher-order moments, but these cannot be robustly interpreted as the Gaussian likelihood assumption breaks down for these statistics. Taken individually, we find that each HOS outperforms the two-point statistics by a factor of around two in the precision of the forecasts with some variations across statistics and cosmological parameters. When combining all the HOS, this increases to a $4.5$ times improvement, highlighting the immense potential of HOS for cosmic shear cosmological analyses with $Euclid$. The data used in this analysis are publicly released with the paper.

Topik & Kata Kunci

Physics

Penulis (500)

E

Euclid Collaboration V. Ajani

M

M. Baldi

A

A. Barthelemy

A

A. Boyle

P

P. Burger

V

V. Cardone

S

S. Cheng

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S. Codis

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Format Sitasi

APA MLA BibTeX
Ajani, E.C.V., Baldi, M., Barthelemy, A., Boyle, A., Burger, P., Cardone, V. et al. (2023). Euclid preparation. XXIX. Forecasts for ten different higher-order weak lensing statistics. https://doi.org/10.1051/0004-6361/202346017

Akses Cepat

Lihat di Sumber doi.org/10.1051/0004-6361/202346017
Informasi Jurnal
Tahun Terbit
2023
Bahasa
en
Total Sitasi
32×
Sumber Database
Semantic Scholar
DOI
10.1051/0004-6361/202346017
Akses
Open Access ✓