http://arxiv.org/abs/2009.01539
We present the first cosmological simulations of primordial magnetic fields directly derived from the constraints from the Cosmic Microwave Background observations, based on the fields’ gravitational effect on cosmological perturbations. We evolved different primordial magnetic field models from $z=40$ to $z=0$ with the {\enzo} code and compared their observable signatures (and relative differences) in galaxy clusters, filaments and voids. The differences in synchrotron radio powers and Faraday Rotation measure from galaxy clusters are generally too small to be detected, whereas differences present in filaments can only be investigated with the higher sensitivity afforded by the Square Kilometre Array. However, several statistical full-sky analyses, such as the cross-correlation between galaxies and diffuse synchrotron power, the Faraday Rotation structure functions from background radio galaxies, or the analysis of arrival direction of Ultra-High-Energy Cosmic Rays, may already be used to detect currently constrained fields.
F. Vazza, D. Paoletti, S. S.Banfi, et. al.
Fri, 4 Sep 20
-1399/65
Comments: Submitted to MNRAS, 20 pages and 22 figures. A higher resolution version of the paper can be downloaded here this https URL
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