Beyond power spectrum to unveil systematics on HI intensity maps

Context. H I intensity mapping is a promising technique to probe large-scale structure, traditionally analyzed via two-point statistics such as the angular power spectrum. This latter technique has proven very powerful but may miss key non-Gaussian information present in the signal. Aims. We extend...

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Bibliographic Details

Published in:	Astronomy & Astrophysics
Main Authors:	Gorbatchev Pauline, Starck Jean-Luc, Camera Stefano, Spinelli Marta
Format:	Article
Language:	English
Published:	EDP Sciences 2026-06-01
Subjects:	cosmological parameters large-scale structure of universe
Online Access:	https://www.aanda.org/articles/aa/full_html/2026/06/aa58340-25/aa58340-25.html