Simulations and observational tests of primordial magnetic fields from Cosmic Microwave Background constraints
Simulations and observational tests of primordial magnetic fields from Cosmic Microwave Background constraints
复制标题
宇宙微波背景约束下原初磁场的模拟和观测测试
DOI:
10.1093/mnras/staa3532
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发表时间:
2021
影响因子:
4.8
通讯作者:
Brüggen
中科院分区:
文献类型:
--
作者:
Paoletti;Banfi;Finelli;Gheller;O’Sullivan;Brüggen
We present the first cosmological simulations of primordial magnetic fields derived from the constraints by the Cosmic Microwave Background observations, based on the fields’ gravitational effect on cosmological perturbations. We evolved different primordial magnetic field models with theenzocode 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 will be testable with the higher sensitivity of 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, can already be used to constrain these primordial field models.
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